UNI EN 15316-3-3_2008

NORMAEUROPEA

Pagina IUNI EN 15316-3-3:2008

UNI Riproduzione vietata. Tutti i diritti sono riservati. Nessuna parte del presente documentopu essere riprodotta o diffusa con un mezzo qualsiasi, fotocopie, microfilm o altro, senzail consenso scritto dellUNI.

www.uni.com

UNIEnte Nazionale Italianodi UnificazioneVia Sannio, 220137 Milano, Italia

UNI EN 15316-3-3

MAGGIO 2008

Impianti di riscaldamento degli edificiMetodo per il calcolo dei requisiti energetici e dei rendimenti dellimpiantoParte 3-3: Impianti per la produzione di acqua calda sanitaria, generazione

Heating systems in buildingsMethod for calculation of system energy requirements and system efficienciesPart 3-3: Domestic hot water systems, generation

La norma fa parte di una serie di norme sul metodo di calcolo deirequisiti energetici e dei rendimenti dellimpianto di riscaldamentodegli edifici.La norma ha lo scopo di fornire i metodi di calcolo per:- le perdite termiche dellimpianto di generazione di acqua calda

sanitaria;- le perdite termiche dellimpianto di generazione di acqua calda

sanitaria recuperabili per il riscaldamento degli ambienti;- lenergia ausiliaria degli impianti di generazione di acqua calda

sanitaria.

TESTO INGLESE

La presente norma la versione ufficiale in lingua inglese dellanorma europea EN 15316-3-3 (edizione ottobre 2007).

ICS 91.140.10

L icenza d 'uso concessa a UNIVERSITA ' CENTRO ATENEO DOC.POLO MONTE DAGO per l ' abbonamento anno 2008 .L i cenza d 'uso in te rno su pos taz i one s ingo la . R ip roduz i one v ie ta ta . E ' p ro ib i to qua l s ias i u t i l izzo in re te (LAN, in te rne t , e tc . . . )

UNI Pagina IIUNI EN 15316-3-3:2008

Le norme UNI sono elaborate cercando di tenere conto dei punti di vista di tutte le partiinteressate e di conciliare ogni aspetto conflittuale, per rappresentare il reale statodellarte della materia ed il necessario grado di consenso.Chiunque ritenesse, a seguito dellapplicazione di questa norma, di poter fornire sug-gerimenti per un suo miglioramento o per un suo adeguamento ad uno stato dellartein evoluzione pregato di inviare i propri contributi allUNI, Ente Nazionale Italiano diUnificazione, che li terr in considerazione per leventuale revisione della norma stessa.

Le norme UNI sono revisionate, quando necessario, con la pubblicazione di nuove edizioni odi aggiornamenti. importante pertanto che gli utilizzatori delle stesse si accertino di essere in possessodellultima edizione e degli eventuali aggiornamenti. Si invitano inoltre gli utilizzatori a verificare lesistenza di norme UNI corrispondenti allenorme EN o ISO ove citate nei riferimenti normativi.

PREMESSA NAZIONALELa presente norma costituisce il recepimento, in lingua inglese, del-la norma europea EN 15316-3-3 (edizione ottobre 2007), che assu-me cos lo status di norma nazionale italiana.

La presente norma stata elaborata sotto la competenza dellentefederato allUNICTI - Comitato Termotecnico Italiano

La presente norma stata ratificata dal Presidente dellUNI ed entrata a far parte del corpo normativo nazionale il 22 maggio 2008.


EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORM

EN 15316-3-3

October 2007

ICS 91.140.10

English Version

Heating systems in buildings - Method for calculation of systemenergy requirements and system efficiencies - Part 3-3:

Domestic hot water systems, generation

Systmes de chauffage dans les btiments - Mthode decalcul des besoins nergtiques et des rendements dessystmes - Partie 3-3 : Systmes de production d'eau

chaude sanitaire, gnration

Heizungsanlagen in Gebuden - Verfahren zur Berechnungder Energieanforderungen und Nutzungsgrade der Anlagen

- Teil 3-3: Trinkwassererwrmung, Erzeugung

This European Standard was approved by CEN on 18 August 2007.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATIONC O M I T E U R O P E N D E N O R M A LI S A T I O NEUR OP IS C HES KOM ITEE FR NOR M UNG

Management Centre: rue de Stassart, 36 B-1050 Brussels

2007 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.

Ref. No. EN 15316-3-3:2007: E

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

2

Contents Page

Foreword..............................................................................................................................................................4Introduction .........................................................................................................................................................61 Scope ......................................................................................................................................................72 Normative references ............................................................................................................................73 Terms and definitions ...........................................................................................................................74 Symbols, units and indices ................................................................................................................105 Energy output of the domestic hot water generation sub-system .................................................115.1 General..................................................................................................................................................115.2 Domestic hot water systems with a single heat generator .............................................................115.3 Domestic hot water systems with multiple heat generators...........................................................125.3.1 General..................................................................................................................................................125.3.2 Domestic hot water systems with different types of heat generators in a series

configuration ........................................................................................................................................125.3.3 Domestic hot water systems with multiple heat generators in a parallel configuration..............126 Indirectly heated hot water storage vessel .......................................................................................137 Primary circulation pipes....................................................................................................................147.1 General..................................................................................................................................................147.2 Thermal losses by a simple estimation method...............................................................................147.3 Thermal losses by a detailed calculation method............................................................................148 Direct heated domestic hot water generation devices ....................................................................148.1 General..................................................................................................................................................148.2 Heat generation systems in single-family dwellings .......................................................................158.3 Heat generation systems others than for single-family dwellings .................................................168.3.1 Oil and gas fired boilers......................................................................................................................168.3.2 Direct gas fired domestic storage water heater ...............................................................................168.3.3 Direct electrical heated domestic storage water heaters ................................................................168.3.4 Alternative generators.........................................................................................................................179 Auxiliary energy...................................................................................................................................179.1 Total auxiliary energy consumption ..................................................................................................179.2 Auxiliary energy consumption for primary circulation pumps.......................................................189.3 Auxiliary energy consumption for direct heated domestic hot water generation devices..........1810 Recoverable heat losses, recovered heat losses and unrecoverable heat losses.......................18Annex A (informative) Calculation of thermal loss from a gas or oil fired boiler in systems other

than for single family dwellings .........................................................................................................20A.1 Calculation of total boiler thermal loss .............................................................................................20A.2 Calculation of heat loss during boiler operation..............................................................................20A.3 Calculation of stand-by heat loss ......................................................................................................21A.3.1 General..................................................................................................................................................21A.3.2 Average boiler temperature during a stand-by period.....................................................................21A.3.3 Load factor of a boiler .........................................................................................................................21A.3.4 Auxiliary energy consumption for a boiler .......................................................................................22A.3.5 Nominal output efficiency of a boiler.................................................................................................22Annex B (informative) Thermal loss from a gas fired domestic storage water heater ..............................24Annex C (informative) Thermal loss from an electrical heated domestic storage water heater

(with continuous power on)................................................................................................................26

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

3

Annex D (informative) Thermal loss from an electrical heated domestic storage water heater (with timed power on)...................................................................................................................................27

Bibliography......................................................................................................................................................31

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

4

Foreword

This document (EN 15316-3-3:2007) has been prepared by Technical Committee CEN/TC 228 Heating systems in buildings, the secretariat of which is held by DS.

This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2008, and conflicting national standards shall be withdrawn at the latest by April 2008.

This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association (Mandate M/343), and supports essential requirements of EU Directive 2002/91/EC on the energy performance of buildings (EPBD). It forms part of a series of standards aimed at European harmonisation of the methodology for calculation of the energy performance of buildings. An overview of the whole set of standards is given in prCEN/TR 15615.'

The subjects covered by CEN/TC 228 are the following:

design of heating systems (water based, electrical etc.);

installation of heating systems;

commissioning of heating systems;

instructions for operation, maintenance and use of heating systems;

methods for calculation of the design heat loss and heat loads;

methods for calculation of the energy performance of heating systems.

Heating systems also include the effect of attached systems such as hot water production systems.

All these standards are systems standards, i.e. they are based on requirements addressed to the system as a whole and not dealing with requirements to the products within the system.

Where possible, reference is made to other European or International Standards, a.o. product standards. However, use of products complying with relevant product standards is no guarantee of compliance with the system requirements.

The requirements are mainly expressed as functional requirements, i.e. requirements dealing with the function of the system and not specifying shape, material, dimensions or the like.

The guidelines describe ways to meet the requirements, but other ways to fulfil the functional requirements might be used if fulfilment can be proved.

Heating systems differ among the member countries due to climate, traditions and national regulations. In some cases requirements are given as classes so national or individual needs may be accommodated.

In cases where the standards contradict with national regulations, the latter should be followed.

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

5

EN 15316 Heating systems in buildings Method for calculation of system energy requirements and system efficiencies consists of the following parts:

Part 1: General

Part 2-1: Space heating emission systems

Part 2-3: Space heating distribution systems

Part 3-1: Domestic hot water systems, characterisation of needs (tapping requirements)

Part 3-2: Domestic hot water systems, distribution

Part 3-3: Domestic hot water systems, generation

Part 4-1: Space heating generation systems, combustion systems (boilers) Part 4-2: Space heating generation systems, heat pump systems

Part 4-3: Heat generation systems, thermal solar systems

Part 4-4: Heat generation systems, building-integrated cogeneration systems

Part 4-5: Space heating generation systems, the performance and quality of district heating and large volume systems

Part 4-6: Heat generation systems, photovoltaic systems

Part 4-7: Space heating generation systems, biomass combustion systems

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

6

Introduction

This European Standard is one of a number of standards that together describe methods for calculation of system energy requirements and system efficiencies related to domestic hot water systems. In particular this European Standard specifies methods for calculation of the input energy requirements and energy losses of the generation units.

The user needs to refer to other European Standards or to national documents for input data and detailed calculation procedures not provided by this European Standard.

Only the calculation methods are normative. Values necessary to complete the calculations should be given in a national annex.

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

7

1 Scope

This European Standard is part of a set of standards covering the methods for calculation of system energy requirements and system efficiencies of heating systems in buildings. In particular this standard is one of a number of standards dealing with domestic hot water systems.

The scope of this specific part is to standardise the methods for calculation of:

thermal losses from the domestic hot water generation system;

recoverable thermal losses for space heating from the domestic hot water generation system;

auxiliary energy of the domestic hot water generation systems.

These values are input data for calculation of the overall energy use according to prEN 15603 and EN 15316-1.

This European Standard specifies the:

inputs;

calculation methods;

outputs.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

EN 15316-3-2, Heating systems in buildings Method for calculation of system energy requirements and system efficiencies Part 3-2 Domestic hot water systems, distribution

prEN 50440, Efficiency of domestic electrical storage water-heaters

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

3.1auxiliary energy electrical energy used by technical building systems for heating, cooling, ventilation and/or domestic hot water to support energy transformation to satisfy energy needs

NOTE 1 This includes energy for fans, pumps, electronics etc. Electrical energy input to a ventilation system for air transport and heat recovery is not considered as auxiliary energy, but as energy use for ventilation.

NOTE 2 In EN ISO 9488, the energy used for pumps and valves is called "parasitic energy".

3.2buildingconstruction as a whole, including its envelope and all technical building systems, for which energy is used to condition the indoor climate, to provide domestic hot water and illumination and other services related to the use of the building

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

8

NOTE The term can refer to the building as a whole or to parts thereof that have been designed or altered to be used separately.

3.3calculation period period of time over which the calculation is performed

NOTE The calculation period can be divided into a number of calculation steps.

3.4domestic hot water heating process of heat supply to raise the temperature of the cold water to the intended delivery temperature

3.5energy need for domestic hot water heat to be delivered to the needed amount of domestic hot water to raise its temperature from the cold network temperature to the prefixed delivery temperature at the delivery point, not taking into account the technical building thermal systems

3.6energy use for space heating or cooling or domestic hot water energy input to the space heating or cooling system or the domestic hot water system to satisfy the energy need for space heating or cooling (including dehumidification) or domestic hot water, respectively

NOTE If the technical building system serves several purposes (e.g. space heating and domestic hot water), it can be difficult to split the energy use into that used for each purpose. It can be indicated as a combined quantity (e.g. energy need for space heating and domestic hot water).

3.7gross calorific value quantity of heat released by a unit quantity of fuel, when it is burned completely with oxygen at a constant pressure equal to 101 320 Pa, and when the products of combustion are returned to ambient temperature

NOTE 1 This quantity includes the latent heat of condensation of any water vapour contained in the fuel and of the water vapour formed by the combustion of any hydrogen contained in the fuel.

NOTE 2 According to ISO 13602-2, the gross calorific value is preferred to the net calorific value.

NOTE 3 The net calorific value does not take into account the latent heat of condensation.

3.8heating or cooling season period of the year during which a significant amount of energy for heating or cooling is needed

NOTE The season lengths are used to determine the operation period of technical systems.

3.9heat recovery heat generated by a technical building system or linked to a building use (e.g. domestic hot water) which is utilised directly in the related system to lower the heat input and which would otherwise be wasted (e.g. preheating of the combustion air by flue gas heat exchanger)

3.10part load operation operation state of the technical system (e.g. heat pump), where the actual load requirement is below the actual output capacity of the device

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

9

3.11recoverable system thermal loss part of a system thermal loss which can be recovered to lower either the energy need for heating or cooling or the energy use of the heating or cooling system

NOTE This depends on the calculation approach chosen to calculate the recovered gains and losses (holistic or simplified approach).

3.12recovered system thermal loss part of the recoverable system thermal loss which has been recovered to lower either the energy need for heating or cooling or the energy use of the heating or cooling system

3.13system boundary boundary that includes within it all areas associated with the building (both inside and outside the building) where energy is consumed or produced

NOTE Inside the system boundary, the system losses are taken into account explicitly, outside the system boundary they are taken into account by the conversion factor.

3.14system thermal loss thermal loss from a technical building system for heating, cooling, domestic hot water, humidification, dehumidification, or ventilation or lighting that does not contribute to the useful output of the system

NOTE 1 A system loss can become an internal heat gain for the building, if it is recoverable.

NOTE 2 Thermal energy recovered directly in the subsystem is not considered as a system thermal loss but as heat recovery and directly treated in the related system standard.

NOTE 3 Heat dissipated by the lighting system or by other services (e.g. appliances of computer equipment) is not part of the system thermal losses, but part of the internal heat gains.

3.15tapping program 24-hour cycle that defines a number of domestic hot water draw-off requirements: succession of energy needs corresponding to uses of domestic hot water during a day

NOTE The tapping program is also called tapping cycle and tapping patterns.

3.16technical building system technical equipment for heating, cooling, ventilation, domestic hot water, lighting and electricity production composed by sub-systems

NOTE 1 A technical building system can refer to one or to several building services (e.g. heating system, space heating and domestic hot water system).

NOTE 2 Electricity production can include cogeneration and photovoltaic systems.

3.17technical building sub-system part of a technical building system that performs a specific function (e.g. heat generation, heat distribution, heat emission)

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

10

4 Symbols, units and indices

For the purposes of this document, the following symbols and units (Table 1) and indices (Table 2) apply.

Table 1 Symbols and units

Symbol Name of quantity Unit

A area m2

D diameter m

L length m

t time, period of time s

Q quantity of heat, energy J

P electrical power W

V volume m3

W auxiliary (electrical) energy J

x, y, z constants -

load factor part -

efficiency - celsius temperature C X coefficient of relative quantity of energy delivered

versus maximum energy stored -

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

11

Table 2 Indices

amb ambiant ls loss p pipe

avg average max maximum sby stand-by

del delivered meas measured sol solar

dis distribution mn arithmetic mean st storage

e external nd need Tot total

em emission nom nominal ve ventilation

gen generation off off W domestic hot water

in input to system on on x indices

ind independent out output from system

int internal p primary

5 Energy output of the domestic hot water generation sub-system

5.1 General

The heat generator for a domestic hot water system shall provide the energy required for meeting the energy need for domestic hot water and for compensating the losses in the other sub-systems (e.g. distribution).

The energy requirement on the heat generator is given by:

lspWlsstWlsdisWWoutgenW QQQQQ ,,,,,,,, +++= (MJ/day) (1)

where

outgenWQ ,, is the total generation output (MJ/day);

WQ is the domestic hot water requirement (see EN 15316-3-1) (MJ/day);

lsdisWQ ,, is the thermal loss from domestic hot water distribution system (see EN 15316-3-2) (MJ/day);

lsstWQ ,, is the thermal loss from the domestic hot water storage vessel (if present) (MJ/day);

lspWQ ,, is the thermal loss from primary pipes (if present) (MJ/day).

If the heat generator or generators also provide space heating, the performance of the heat generator shall be calculated separately for operation during the summer period, when there is no space heating demand, and operation during the winter period, when both space heating and domestic hot water is being provided.

5.2 Domestic hot water systems with a single heat generator

If a single heat generator is applied, the total generation output has to be provided from that heat generator.

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

12

5.3 Domestic hot water systems with multiple heat generators

5.3.1 General

If more than one heat generator is applied to provide the required heat energy for domestic hot water, the contribution from each heat generator is calculated on the basis of the nominal output of each individual heat generator.

If any or all of these heat generators have separate primary pipe circuits, the primary pipe losses and the auxiliary energy consumption should be calculated separately for each circuit.

5.3.2 Domestic hot water systems with different types of heat generators in a series configuration

If the domestic hot water is heated by different types of heat generators in a series configuration, the contribution of each individual heat generator shall be determined. Calculations are to be performed in the sequence of application of the heat generators for energy generation.

NOTE Normally it is assumed, that the domestic hot water can be heated by a maximum of three heat generators: pre-heating by e.g. solar panels, base heating and supplementary heating to meet the peak load.

If heat energy is supplied to the domestic hot water system from other types of appliances (e.g. exhaust air heat pump, see EN 15450 and prEN 15316-4-2), only the remaining heat demand is covered by the supplementary heat generator (e.g. a boiler).

5.3.3 Domestic hot water systems with multiple heat generators in a parallel configuration

If more than one heat generator is applied in a parallel configuration to provide the required heat energy for domestic hot water, the proportional contribution igenW ,, of each unit is calculated from the ratio of the nominal output of that unit to the total nominal output of the installation available for heating the domestic hot water.

outgenW

iinomgenW

inomgenWoutgenWigenWioutgenW QQ

QQQ ,,

,,,

,,,,,,,,,, **

== (MJ/day) (2)

For heating the domestic water, a number of heat generators (e.g. solar panel, boiler, heat pump, or electrical ancillary heating) can be available. The total heat requirement for all loads shall correspond to the total heat output of all heat generators:

=kjQQ kin,dis,W,jout,gen,W, (MJ) (3)

where

joutgenWQ ,,, is the energy output of heat generator j during the time period considered (MJ);

kindisWQ ,,, is the energy input to the distribution system k during the time period considered (MJ).

If more than one heat generator is applied, the total heat demand of the distribution system indisWQ ,, is distributed amongst the available heat generators. The calculations are to be performed independently for each heat generator j on the basis of outgenWQ ,, and jgenW ,, .

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

13

6 Indirectly heated hot water storage vessel

The storage thermal loss from an indirectly heated hot water storage vessel can be obtained from the stand-by heat loss of the vessel. The total heat dissipated from the storage vessel over the time period considered is quantified as a loss.

The storage thermal loss is calculated from the stand-by heat loss with adjustment to actual temperature difference as follows:

sbystWsbystW

avgambavgstWlsstW QQ ,,

,,

,,,,,

)(

=

(MJ/day) (4)

where

avgstW ,, is the average temperature of stored water (oC);

avgamb, is the average ambient temperature (oC);

sbystW ,, is the average temperature difference applied at stand-by heat loss tests (oC);

sbystWQ ,, is the stand-by heat loss (MJ/day).

The weekly, monthly or annual thermal losses are obtained by multiplying the thermal loss per day by the appropriate number of days.

The stand-by heat loss of the storage vessel has to be measured in accordance with a European Standard or national standard, e.g. EN 12897, appropriate for the vessel size and type. The measured stand-by heat loss is based on the actual temperatures during the period of operation. The standard to be used for the measurement shall be specified in a national annex.

If the stand-by heat loss of the storage vessel is not available, a value can be calculated on the basis of an equation of the form;

zstWsbystW VyxQ ,,, += (MJ/day) (5)

where

stWV , is the volume per vessel (litres);

zandyx, are constants.

Values for the constanst x , y and z shall be given in a national annex.

The stand-by heat loss from older storage vessels can be estimated in a similar way, where values for the constants x , y and z shall also be given in a national annex. Alternatively, a national annex may specify the stand-by heat loss based on storage volume and insulation type and thickness.

If the hot water storage vessel is located within the heated space of the building, part of the storage thermal loss may be recovered (see Clause 10).

Connecting pipes to the storage water heater may increase the storage thermal loss, particularly if the pipes are not insulated. These additional losses are caused by circulation set up in the connecting pipes between

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

14

the hot water in the storage vessel and cooler water in the pipes away from the vessel. If these losses are to be taken into account, the method shall be given in a national annex.

7 Primary circulation pipes

7.1 General

Where the domestic hot water is supplied from an indirectly heated hot water storage vessel, the heat energy is supplied from a separate heat generator. The hot water storage vessel may be located adjacent to or remote from the heat generator.

Thermal losses lspWQ ,, occur from the primary circulation pipes between the heat generator and the hot water storage vessel, and these losses can be calculated by two different methods:

a simple estimation method;

a detailed calculation method.

The hot water storage vessel may be incorporated into the heat generator appliance and thus the thermal loss of the primary circulation pipes may be taken into account by the overall appliance efficiency measurements.

For gas appliances with a hot water storage vessel incorporated and intended to be installed in single family dwellings, measurements according to EN 13203-2 include the thermal loss of the primary circulation pipes.

7.2 Thermal losses by a simple estimation method

A simple method for estimating the thermal losses from primary circulation pipes is to use a fixed representative value. For application of this method, appropriate values shall be given in a national annex.

7.3 Thermal losses by a detailed calculation method

For this detailed calculation method the methods for calculation of thermal losses from pipes given in EN 15316-3-2 shall be followed for the primary circulation pipes.

Calculation of the thermal losses from the primary circulation pipes should be based on the actual length of the pipes, if available. If the detailed pipe network plan is not available, representative values for the pipe lengths can be applied. These values shall be given in a national annex.

8 Direct heated domestic hot water generation devices

8.1 General

Energy labelling legislation requires efficiency measurements to be obtained for domestic hot water heat generators to be applied in single-family dwellings. These requirements are intended to be independent of the fuel source and heat generator type, and are therefore treated separately in 8.2.

Where domestic hot water generation systems are installed in buildings providing multi-family accommodation or in commercial buildings, the efficiency of the domestic hot water generation is based on the appliance performance standards appropriate for that appliance technology (see 8.3).

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

15

8.2 Heat generation systems in single-family dwellings

The domestic hot water generation efficiency for heat generation systems in single-family dwellings is intended to be required to meet energy labelling legislation. Standards developed to show compliance with the corresponding directive are to incorporate test procedures against three common domestic hot water tapping programs.

The results of such tests provide domestic hot water generation efficiency based on each of the tapping programs. If the appliance is not intended to provide the domestic hot water requirement corresponding to all three tapping programs, this is to be identified in the appliance specification, containing test results only for the applicable hot water tapping programs.

For this method, it is not necessary to have results from all three tapping programs. The method is based on an efficiency value corresponding to the average tapping program and either the higher tapping program or the lower tapping program, depending on whether the domestic hot water energy requirement is above or below the energy requirement corresponding to the average tapping program.

The domestic hot water generation efficiency related to the actual domestic hot water use can be obtained by linear interpolation as follows:

For domestic hot water use below the average, i.e. 2,,1 QQQ outgenW

EN 15316-3-3:2007 (E)

16

8.3 Heat generation systems others than for single-family dwellings

8.3.1 Oil and gas fired boilers

The total thermal loss from a boiler is based on:

nominal output efficiency nomgenW ,, ;

stand-by heat loss sbylsgenWQ ,,, ;

nominal heat output nomgenWQ ,, .

These values have to be determined by measurements, e.g. in accordance with EU Directive 92/42, EN 304, EN 297, EN 483, EN 656, EN 625 (for combination boilers), or EN 677 (for condensing boilers).

If measurements are not available, fixed default values shall be given. Default values shall be provided in a national annex.

The calculation method is given in Annex A.

A national annex may specify default values if specific test results are not available.

For older boilers, for which the efficiency and the stand-by heat loss may not be known, values may be given in a national annex.

8.3.2 Direct gas fired domestic storage water heater

The efficiency of a direct gas fired domestic storage water heater should be obtained from tests in accordance with EN 89.

If no efficiency values are available, minimum values may be provided in a national annex. These values should not be lower than the default values given in Annex B.

The energy required to maintain the hot water temperature is assumed to be equal to the heat loss to the surroundings. This value should be obtained from the test method specified in EN 89 and may be quoted by the manufacturer.

If no value is available, a default value shall be used. The default value is calculated on the basis of the maximum value specified in EN 89 for the maintenance energy requirement. This is assumed to be 20 % less than the maximum value allowed.

The calculation method is described in Annex B.

For older systems, where the manufacturers data is not available and measurements cannot be made, the values to be used shall be given in a national annex.

8.3.3 Direct electrical heated domestic storage water heaters

8.3.3.1 General

Electrical heated domestic storage water heaters may be heated continuously or heated for a defined period of the day.

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

17

8.3.3.2 Electrical heated domestic storage water heaters - power continuously on

The efficiency of a direct electrical heated domestic storage water heater shall be obtained from tests in accordance with prEN 50440.

The thermal loss is assumed to be equal to the energy required to maintain the hot water temperature, i.e. equal to the heat loss to the surroundings. This value shall be obtained from the test method specified in prEN 50440 and may be quoted by the manufacturer.

The calculation method is described in Annex C. If values of the parameters for determining the stand-by heat loss are not available, default values shall be provided in a national annex.


8.3.3.3 Electrical heated domestic storage water heaters - power not continuously on

These appliances provide domestic hot water from a stored quantity of hot water. As the hot water is supplied to the user outlets, the hot water in the storage vessel is depleted. These appliances use power during a certain heating period, usually coinciding with a low tariff period, to recover the hot water temperature in the storage vessel.

The total energy of the hot water taken from the storage vessel is equal to the energy of the domestic hot water requirement and the losses in the distribution system. In addition, energy is needed to overcome the losses from the hot water storage vessel.

Efficiency for electrical heated domestic storage water heaters is directly related to stand-by losses, which are measured in steady conditions (EN 60379) or obtained from dynamic tests representing daily tapping patterns (prEN 50440). The method to be used is partly dependant on building type and the application of the domestic hot water system. The standard to be used shall be given in a national annex.

The calculation method, to estimate daily thermal losses corresponding to average design tapping cycles, is described in Annex D. If values of the parameters for determining the daily thermal losses are not available, default values shall be provided in a national annex.


8.3.4 Alternative generators

For systems, where all or part of the domestic hot water energy requirement is provided by heat generators which are not oil or gas fired units or electrical heated systems, the efficiency of the heat generator is determined from the relevant standards.

9 Auxiliary energy

9.1 Total auxiliary energy consumption

The total auxiliary energy consumption for the domestic hot water generation sub-system auxgenWW ,, is given by:

gengenWpmpgenWauxgenW WWW ,,,,,, += (MJ/day) (9)

where

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

18

pmpgenWW ,, is the auxiliary energy consumption for primary circulation pumps (MJ/day);

gengenWW ,, is the auxiliary energy consumption for domestic hot water generation devices MJ/day).

9.2 Auxiliary energy consumption for primary circulation pumps

Electrical energy is required for the circulation pump to overcome the pressure drop within the primary circulation system between the heat generator and the hot water storage vessel.

If the circulation pump is contained within the heat generator, the auxiliary energy required is considered as part of the auxiliary energy for the heat generator. The auxiliary energy measure in accordance with an appropriate appliance standard for the heat generator should then be used.

If a separate circulation pump is applied, the auxiliary energy consumption should be determined separately. The circulation pump may also be used in the space heating system. Care shall be taken to take the auxiliary energy consumption into account only once.

Methods for calculation of the auxiliary energy consumption for circulation loops are given in EN 15316-3-2. These methods shall be followed for calculation of the auxiliary energy consumption for primary circulation pipes. Either the simplified method or the detailed calculation method may be applied. Details and default values to be used shall be given in a national annex.

9.3 Auxiliary energy consumption for direct heated domestic hot water generation devices

Auxiliary energy is required for operation of the burner, operation of the primary circulation pump and operation of any other equipment related to operation of the heat generation sub-system and being an integral part of that system.

Auxiliary energy consumption shall be measured according to an appropriate product standard.

Auxiliary energy, normally in the form of electrical energy, may partially be recoverable for space heating or be recovered as energy transmitted to the water of the primary circulation circuit.

A national annex may specify default values, if specific test results are not available. An example is given in A.3.4.

10 Recoverable heat losses, recovered heat losses and unrecoverable heat losses

The calculated system losses are not all necessarily lost. Some of the system losses are recoverable for space heating and a proportion of these may actually be recovered and contribute to the space heating.

The recoverable system losses are expressed as a fraction of the generation thermal losses and a fraction of the generation auxiliary energy.

rblauxgenWauxgenWrbllsgenWlsgenWrbllsgenW fWfQQ ,,,,,,,,,,,,, ** += (MJ/day) (10)

where

rbllsgenWf ,,, is the fraction of generation thermal losses recoverable for space heating;

rblauxgenWf ,,, is the fraction of generation auxiliary energy consumption recoverable for space heating.

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

19

The fractions depend on e.g. location of the pipes, location of the pump, location of the storage vessel, duration of the heating season. If the storage vessel is installed in the heated space of the building, the thermal losses may be recoverable. However, recoverable losses can only be considered during periods of the year where there is a significant space heating demand.

The proportion of the total recoverable system losses that can be recovered is determined according to other standards (e.g. EN ISO 13790, prEN 15603) for which the total recoverable system losses are provided as an input.

The fractions shall be specified in a national annex. If a national annex is not provided or does not include these values, it is considered that no system losses are recoverable for the space heating. ( rbllsgenWQ ,,, = 0).

Under some circumstances, the recoverable system losses may add to the cooling load required in a building.

Some of the auxiliary energy may be recovered as heat in the domestic hot water system, e.g. electrical energy supplied to the circulation pump is transferred as thermal energy to the circulating water. For the purpose of the calculations, the auxiliary energy recovered as thermal energy to the circulating water is to be taken into account directly as a reduction of the thermal losses.

In many systems, the same heat generator supplies space heating and heating for the domestic hot water. Care shall be taken to ensure, that only those recoverable heat losses which are not already accounted for in the analysis of the space heating system are taken into account in the analysis of the domestic hot water system.

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

20

Annex A(informative)

Calculation of thermal loss from a gas or oil fired boiler in systems other than for single family dwellings

A.1 Calculation of total boiler thermal loss

The total thermal loss from a boiler is calculated from the heat loss during operation and the stand-by heat loss as follows:

sbylsgenWonlsgenWlsgenW QQQ ,,,,,,,, += (MJ/day) (A.1)

where

lsgenWQ ,, is the total thermal loss from boiler (MJ/day);

onlsgenWQ ,,, is the heat loss from boiler during boiler operation (MJ/day);

sbylsgenWQ ,,, is the stand-by heat loss from boiler (MJ/day).

A.2 Calculation of heat loss during boiler operation

The heat loss during the boiler operation period is calculated by:

outgenHinomgensionlsgenW QHHQ .,,,,,, ))/(1( = (MJ/day) (A.2)

where

onlsgenWQ ,,, is the heat loss from boiler during boiler operation (MJ/day);

outgenQ , is the heat output of boiler (MJ/day);

Hinomgen ,, is the efficiency of boiler at nominal output expressed for iH ;

sH is the higher calorific value of the fuel (kWh/kg or kWh/m3);

iH is the lower calorific value of the fuel (kWh/kg or kWh/m3).

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

21

A.3 Calculation of stand-by heat loss

A.3.1 General

The stand-by heat loss, sbylsgenWQ ,,, , during periods where the boiler is not providing heat to a storage vessel or directly to the domestic hot water, is calculated by:

)24(*)2070(

)(**6,3 ,,

,,,,,,,,, nomgenW

avgspavggenWmeassbygenWsbylsgenW tQQ

=

(MJ/day) (A.3)

where

sbylsgenWQ ,,, is the stand-by heat loss from boiler (MJ/day);

meassbygenWQ ,,, is the stand-by heat loss at a boiler temperature of 70 C and room temperature of 20 C (kW);

avggenW ,, is the average boiler temperature during a stand-by period (C);

avgsp, is the average room temperature (C);

nomgenWt ,, is the period of provision of energy for domestic hot water at nominal heat output (h/day).

During periods where the boiler provides space heating, the present stand-by heat losses are assumed to be zero. Any heat energy generated during these periods and not used in the provision of space heating is to be considered as heat losses in the assessment of the space heating energy requirements.

A.3.2 Average boiler temperature during a stand-by period

The average boiler temperature during a stand-by period depends on a number of factors. These include the boiler controls, type of storage vessel (if applied) and associated space heating operation. For simplification, the average boiler temperature during a stand-by period, avggenW ,, , is assumed to be 50 C, except for flow water heaters where it is assumed to be 40 C.

A.3.3 Load factor of a boiler

The load factor of a boiler related to provision of domestic hot water is calculated as follows:

( )( )nomgennomgen

genWlspWlsstWlsdisWW

nomgen

nomgenWgenW tP

QQQQtt

,,

,,,,,,,

,

,,, **6,3

*

+++== (-) (A.4)

where

genW , is the part load factor of the boiler related to provision of domestic hot water (-);

nomgent , is the running time of the boiler at nominal heat output (h/day);

nomgenWt ,, is the period of provision of energy for domestic hot water (h/day);

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

22

WQ is the energy need for domestic hot water (see EN 15316-3-1) (MJ/day);

lsdisWQ ,, is the thermal losses from the domestic hot water distribution system (see EN 15316-3-2) (MJ/day);

lsstWQ ,, is the thermal losses from the domestic hot water storage vessel (if present) (MJ/day);

lspWQ ,, is the thermal loss from primary pipes (if present) (MJ/day);

nomgenP , is the nominal heat output of the boiler (kW);

genW , is the proportional contribution of the boiler (if the heat load is provided by more than one heat generator).

A.3.4 Auxiliary energy consumption for a boiler

The auxiliary energy consumption for operation of the boiler is calculated on the basis of the auxiliary power consumption nomauxgenP ,, of the boiler measured at 100 % full load in accordance with Council Directive 92/42, i.e. at a volume flow rate corresponding to nominal heat output and a temperature difference between flow temperature and return temperature of 20 K. If the boiler is permanently equipped with a pump operated for heating the domestic hot water in an external and indirectly heated storage vessel, the auxiliary power consumption is determined at an external hydraulic pressure loss of 10 kPa. If the boiler is permanently equipped with a circulation pump and a storage vessel or heat transfer agent (a combination boiler), determination of the auxiliary power consumption has to be carried out on this combination boiler.

nomauxgennomgengenWnomauxgennomgenWauxgenW PtPtW ,,,,,,,,,, ***6,3**6,3 == (MJ/day) (A.5)

where

auxgenWW ,, is the auxiliary energy requirement for the boiler (MJ/day);

nomgenWt ,, is the period of provision of energy for domestic hot water (h/day);

nomauxgenP ,, is the auxiliary power consumption of the boiler (kW);

genW , is the part load factor of the boiler related to provision of domestic hot water (-);

nomgent , is the running time of the boiler at nominal heat output (h/day).

If values of the parameters for determining the auxiliary energy consumption are not available, default values are to be provided.

A.3.5 Nominal output efficiency of a boiler

Nominal output efficiency of a boiler, nomgen, , is determined from the nominal output of the boiler, outnomgenP ,,in (kW) at a test temperature of 70 C, as follows:

Standard boiler: ( )( ) 100/log*0,20,84 ,,, outnomgennomgen P+= (A.6)

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

23

Low-temperature boiler: ( )( ) 100/log*5,15,87 ,,, outnomgennomgen P+= (A.7) Condensing boiler: ( )( ) 100/log*0,10,91 ,,, outnomgennomgen P+= (A.8) Improved condensing boiler: ( )( ) 100/log*0,10,94 ,,, outnomgennomgen P+= (A.9)

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

24

Annex B(informative)

Thermal loss from a gas fired domestic storage water heater

The energy required to maintain the hot water temperature in the storage water heater is assumed to be equal to the heat loss. This value is obtained by the test method specified in EN 89 and may be quoted by the manufacturer. If no value is specified by the manufacturer, a default value is to be applied. The default value is calculated on the basis of the maximum value specified in EN 89 for the maintenance energy requirement and is assumed to be 20 % lower than the maximum value allowed.

The maintenance power, lsstgenWP ,/, , is calculated by:

For appliances of any nominal capacity with a heating-up time of 45 min. or more and for appliances with a nominal capacity up to 200 l with a heating-up time less than 45 min.:

)015,011(8,0 ,/67,0

/,,/, nomstgenstgenWlsstgenW PVP += (W) (B.1)

or lsstgenWP ,/, = 250 W if the value given by Equation (B.1) is lower.

For appliances with a nominal capacity exceeding 200 l with a heating-up time less than 45 min.:

)017,09(8,0 ,/67,0

/,,/, nomstgenstgenWlsstgenW PVP += (W) (B.2)

or lsstgenWP ,/, = 250 W if the value given by Equation (B.2) is lower

where

stgenWV /, is the nominal capacity of the storage water heater (litres);

nomstgenP ,/ is the nominal heat input of the storage water heater (W).

It is assumed that the total heat dissipated from the storage water heater is quantified as a loss.

The total thermal loss is calculated from the maintenance power with adjustment to actual temperature difference and the boiler efficiency as follows:

outgenWgenlsstgenW

avgstgenW

avgambavgstgenWlsgenW Q

PQ ,,

,/,

,/,

,,/,,, *)1(24*0001

*6,3)(

+

= (MJ/day) (B.3)

where

avgstgenW ,/, is the average water temperature in the storage water heater (oC);


avgstgenW ,/, is the average temperature difference used for determination of the maintenance power (oC);

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

25

lsstgenWP ,/, is the maintenance power of the storage water heater (W);

gen is the efficiency of boiler (-);

outgenWQ ,, is the heat output of boiler (MJ/day).

The following minimum efficiency values can be applied as default values:

gen = 84 % for all appliances, except for condensing appliances;

gen = 98 % for condensing appliances.

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

26

Annex C(informative)

Thermal loss from an electrical heated domestic storage water heater (with continuous power on)

The thermal loss is assumed to be equal to the energy required to maintain the hot water temperature in the storage water heater, i.e. equal to the stand-by heat loss of the storage water heater. This value is obtained by the test method specified in prEN 50440 and may be quoted by the manufacturer.

The storage thermal loss, lsstgenWQ ,/, , is calculated from the stand-by heat loss with adjustment to actual temperature difference as follows:

24*)(

*45 56

,/,,,/,,/,,, tt

QQQ measstgenWavgambavgstgenWlsstgenWlsgenW

==

(MJ/day) (C.1)

avgstgenW ,/, is the average water temperature in the storage water heater (oC);


56 tt is the duration of test period (h) (see Annex D, Figure D.1);

measstgenWQ ,/, is the stand-by heat loss of storage water heater at an average temperature difference of 45 oC during test period (MJ).

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

27

Annex D(informative)

Thermal loss from an electrical heated domestic storage water heater (with timed power on)

This calculation method is used to predict the energy consumption of an electrical heated storage water heater with timed power on relevant to daily tapping cycles.

The energy consumption of an electrical storage water heater is considered to comprise the following:

energy demand at the entry of the storage water heater (for covering domestic hot water energy demand and distribution losses);

thermal losses.

The hot water is thermally stratified within the hot water storage vessel, due to the precondition that the heating up period is separated from the hot water draw-off period.

The thermal losses to the environment surrounding the storage water heater can be considered as dependent on the surface of the storage water heater adjacent to the hot part of the stored water.

The basis of the calculation is thus to determine the average value of the surface of the storage water heater corresponding to the part of the vessel that remains hot during a daily cycle.

The calculations are based on a simplified hot water draw-off schedule by referring the daily hot water demand to three momentary times: morning, noon and evening.

Key

1 morning demand 3 evening demand

2 noon demand 4 heating up

Figure D.1 Indication of the change in surface relevant to heat loss estimations due to hot water draw-offs

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

28

The storage thermal loss lsstgenWQ ,/, is calculated as follows:

n

stgenW

mnstgenWnomlsstgenWlsstgenWlsgenW A

AQQQ

==

max,/,

,/,,,/,,/,,, (MJ/day) (D.1)

with:

stgenW

stgenWstgenWstgenWstgenWstgenW D

Ln

DLDA

/,

/,2

/,/,/,max,/, **4

**2** += (m2) (D.2)

( )=

+ =

5

01,/,,/, )(24

1i

iiistgenWmnstgenW ttAA (m2) (D.3)

where i corresponds to each of the time steps according to Figure D.1 and:

for 50 andi =4

**2**2

/,/,/,,/,

stgenWstgenWstgenWistgenW

DLDA += (m2) (D.4)

for 41 i ( )4

*1***2

/,/,/,,/,

stgenWistgenWstgenWistgenW

DXLDA += (m2) (D5)

and:

for 31 iinstgenW

i

jjstgenW

i Q

QX

,/,

1,/,

=

= (-) (D6)

for 4=iinstgenW

delWi Q

QX

,/,

,*5,0= (-) (D7)

and:

jstgenWQ ,/, energy (MJ) corresponding to morning demand (j = 1), noon demand (j = 2) or evening demand (j = 3) according to the simplified tapping pattern

0001)1560(**182,4 /,

,/,

=stgenW

instgenW

VQ (MJ) (D.8)

1604 = tt (h) (D.9)

W

nomlsstgenWdelW

PQQ

tt*6,3

,,/,,45

+= (h) (D.10)

( )4556 tt8tt = (h) (D.11)

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

29

where

stgenWD /, is the external diameter (m);

stgenWL /, is the external height of the appliance (m);

n =1,25 is the heat transfer coefficient;

it is the time switch for hot water draw-off or heating up (h);

nomlsstgenWQ ,,/, is the standardized value for thermal losses (MJ/day);

stgenWV /, is the rated capacity ( l );

WP is the power of the energy supply (kW)

delWQ , is the energy delivered regarding the tapping pattern considered (MJ/day);

max,/, stgenWA is the surface taken into account for calculation when the water heater is in hot conditions (m);

mnstgenWA ,/, is the surface of the appliance equivalent to a mean value for a daily cycle (m);

iX is the coefficient representing the relative quantity of energy delivered versus the maximum energy stored;

instgenWQ ,/, is the maximum quantity of heat energy that could be stored in the appliance (MJ).

Calculation example:

Table D.1 Calculation example, inputs

Description Value and unitExternal diameter

stWD , = 0,52 m External height of the appliance stWL , = 1,42 m Heat transfer coefficient n = 1,25

Standardized value for thermal lossesnomlsstgenWQ ,,/, = 1,71 MJ/day

Rated capacity stWV , = 200 litres

Power of energy supply WP = 2,2 kW

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

30

Other parameters needed:

energy delivered depending on the tapping pattern (see EN 15316-3-1)

delWQ , = for pattern 1: 7,560 MJ/day, for pattern 2: 21,042 MJ/day, for pattern 3: 41,958 MJ/day

surface taken into account for calculation when the water heater is in hot condition

max,/, stgenWA = 3,77 m

maximum quantity of heat energy that could be stored in the appliance

instgenWQ ,/, = 37,638 MJ (i.e. tapping pattern 3 not applicable)

Table D.2 Calculation example, results

Calculated figures Result with tapping pattern 1 Result with tapping pattern 2

0,/, stgenWA 2,744 m2 2,744 m2

t1- t0 0,50 h (t1 = 07:30) 0,25 h (t1 = 07:15)

1,/, stgenWQ 1,512 MJ 8,064 MJ

1X 0,040 2 0,214 3

1,/, stgenWA 2,439 m2 2,035 m2

t2- t1 5,25 h (t2 = 12:45) 5,75 h (t2 = 13:00)

2,/, stgenWQ 1,890 MJ 3,402 MJ

2X 0,090 4 0,304 6

2,/, stgenWA 2,322 m2 1,826 m2

t3- t2 7,25 h (t3 = 20:00) 7,50 h (t3 = 20:30)

3,/, stgenWQ 4,158 MJ 9,576 MJ

3X 0,200 9 0,559 1

3,/, stgenWA 2,066 m2 1,235 m2

t4- t3 3,00 h (t4 = 23:00) 2,50 h (t4 = 23:00)

delWQ , 7,560 MJ 21,042 MJ

4X 0,100 4 0,279 5

4,/, stgenWA 2,299 m2 1,884 m2

t5- t4 1,17 h (t5 = 00:10) 2,87 (t5 = 01:52)

5,/, stgenWA 2,744 m2 2,744 m2

t6- t5 6,83 h (t6 = 07:00) 5,13 (t6 = 07:00)

mnstgenWA ,/, 2,44 m 2,03 m

lsgenWQ ,, 0,99 MJ/day 0,79 MJ/day

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

31

Bibliography

[1] EN 13203-2, Gas-fired domestic appliances producing hot water Appliances not exceeding 70 kW heat input and 300 l water storage capacity Part 2: Assessment of energy consumption

[2] EN 15316-1, Heating systems in buildings Method for calculation of system energy requirements and system efficiencies Part 1: General

[3] EN 15316-2-3, Heating systems in buildings Method for calculation of system energy requirements and system efficiencies Part 2-3, Space heating distribution systems

[4] EN 15316-3-1, Heating systems in buildings Method for calculation of system energy requirements and system efficiencies Part 3-1 Domestic hot water systems, characterisation of needs (tapping requirements)

[5] prEN 15316-4-1 1 ), Heating systems in buildings Method for calculation of system energy requirements and system efficiencies Part 4-1: Space heating generation systems, combustion systems (boilers)

[6] prEN 15316-4-21), Heating systems in buildings Method for calculation of system energy requirements and system efficiencies Part 4-2: Space heating generation systems, heat pump systems

[7] EN 15316-4-3, Heating systems in buildings Method for calculation of system energy requirements and system efficiencies Part 4-3: Heat generation systems, thermal solar systems

[8] EN 15316-4-4, Heating systems in buildings Method for calculation of system energy requirements and system efficiencies Part 4-4: Heat generation systems, building integrated cogeneration systems

[9] EN 15316-4-5, Heating systems in buildings Method for calculation of system energy requirements and system efficiencies Part 4-5: Space heating generation systems, the performance and quality of district heating and large volume systems

[10] EN 15316-4-6, Heating systems in buildings Method for calculation of system energy requirements and system efficiencies Part 4-6: Heat generation systems, photovoltaic systems

[11] prEN 15316-4-71), Heating systems in buildings Method for calculation of system energy requirements and system efficiencies Part 4-7: Space heating generation systems, biomass combustion systems

[12] EN 15450, Heating systems in buildings Design of heat pump heating systems

[13] prEN 15603, Energy performance of buildings Overall energy use and definitions of energy ratings

[14] prCEN/TR 156151), Explanation of the general relationship between various European standards and the Energy Performance of Buildings Directive (EPBD) ("Umbrella document")

[15] EN 603792), Methods for measuring the performance of electric storage water-heaters for household purposes (IEC 60379:1987, modified)

1) To be published.

2) Will be superseded by EN 50440.

UNI EN 15316-3-3:2008


EN 15316-3-3:2007 (E)

32

[16] EN ISO 9488, Solar energy Vocabulary (ISO 9488:1999)

[17] ISO 13602-2, Technical energy systems Methods for analysis Part 2: Weighting and aggregation of energywares

[18] Council Directive 92/42/EEC of 21 May 1992 on efficiency requirements for new hot-water boilers fired with liquid or gaseous fuels

[19] EN 89, Gas-fired storage water heaters for the production of domestic hot water

[20] EN 12897, Water supply Specification for indirectly heated unvented (closed) storage water heaters

[21] EN 297, Gas-fired central heating boilers Type B11 and B11BS boilers, fitted with atmospheric burners of nominal heat input not exceeding 70 kW

[22] EN 304, Heating boilers Test code for heating boilers for atomizing oil burners

[23] EN 483, Gas-fired central heating boilers Type C boilers of nominal heat input not exceeding 70 kW

[24] EN 625, Gas-fired central heating boilers Specific requirements for the domestic hot water operation of combination boilers of nominal heat input not exceeding 70 kW

[25] EN 656, Gas-fired central heating boilers Type B boilers of nominal heat input exceeding 70 kW but not exceeding 300 kW

[26] EN 677, Gas-fired central heating boilers Specific requirements for condensing boilers with a nominal heat input not exceeding 70 kW

[27] EN ISO 13790, Thermal performance of buildings Calculation of energy use for space heating (ISO 13790:2004)

UNI EN 15316-3-3:2008


Riproduzione vietata - Legge 22 aprile 1941 N 633 e successivi aggiornamenti.UNIEnte Nazionale Italianodi UnificazioneVia Sannio, 220137 Milano, Italia


Documents

UNI EN 15316-3-3_2008