Sustainable building material oliver kreft

Sustainable Building Materials – Design and Construction of a Plus Energy House

Oliver Kreft

Xella T+F GmbH

Building Green 2015 Forum CopenhagenOct 28, 2015

SILKAYTONG HEBEL FERMACELL FELS

2Dr. Oliver Kreft· Xella Technologie- und Forschungsgesellschaft mbH · 28.04.23


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Definition and Calculation Method

DefinitionIn its publication on the allocation of grants for model “plus-energy” housing projects, the FederalMinistry of Transport, Building and Urban Development defines the plus-energy house standardas achieving negative annual primary energy use ( Qp < 0 kWh/(m²a)) combined with negative

annual final energy use ( Qe < 0 kWh/(m²a)).

All additional conditions of the Germany Energy Conservation Regulation 2009 (EnEV),such as the provision of thermal comfort in the summer, must also be complied with.

Calculation MethodPrimary and final energy use is verified on the basis of the German Energy Conservation Ordinance

2009 (EnEV) in accordance with DIN V 18599. In addition to the EnEV verification procedure,

final and primary energy use values for household lighting, appliances and processes must be

included in the calculation.

This is based on a standard value of 20 kWh/m²a per dwelling (with cooking accounting for

3 kWh/m²a) up to maximum of 2,500 kWh/a per dwelling.

Plus Energy House Standard

Dr. Oliver Kreft· Xella Technologie- und Forschungsgesellschaft mbH · 28.04.23


5

The Project House M1



Wall U= 0,15 W/(m²K)

Ytong energy plus

t= 40 cm

window U= 0,80 W/(m²K)

Three layer

Solar transmission 55 %

roof U= 0,16 W/(m²K)

26 cm mineral wool

Insulation between rafters

slab U= 0,16 W/(m²K)

22 cm EPS insulation

Bottom and above the slab

Interior wall

CSU

t 11,5/17,5 cm

The Construction


Carport system with photovoltaic for charging the electric vehicle (part of the program)

Special thin-film modules for wallsBattery system Lithium ion for 20 kWh

• Heat pump (air/water)• Solar thermal panels (8.9 m²)• PV panels (65 m²)• Ventilation system with

heat recovery• Tank in tank storage system• (1000 liter)

Domestic Installation


year : 3905.50 kWh corresponds to 20.90 kWh/m²Thermal bridges have been calculated in detail Result: 0,01 W/(m²K) related to the heat exchanging envelope

Heating Demand of the M1-House


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Jobsite M1 in Brieselang/Berlin.


1Relative Humidity and temperature

1

1

2 Measure point temperature on surfaces

2

2heat flux sensor

HFS

HFS

HFSGROUND FLOOR

HFS1

2

1 2

HFS

Monitoring system – measuring points indoor climate


1 Relative Humidity and temperature in the room

1

1

1

FIRST FLOOR

Monitoring system – measuring points indoor climate


Description monitoring

Building physics data Detecting the temperature at all four exterior walls

both exterior and interior surfaces Attaching a heat flow meter on the inside of the west

facade Determination of temperature and humidity in all

rooms Recording of the CO2 content of the air in the

central living area (kitchen, living, dining) capture data on efficiency heat pump and

photovoltaic system

Recording of data: All 30 minutes Data can be read remotely (via the Internet) Monthly presentation of evaluation and compilation

to homepage M1-house: http://www.m1-energieplus.de/

Heat flow meter

CO2-sensor



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Monitoring Results


Final energy and primary energy consumption [kWh/m2]


Cost Overview



Of course we have also previously employed with the topic of energy efficiency and environmental awareness. So we educate our son. Nevertheless, it is a whole new experience, now try it for yourself and live it every day. We have already learned a lot “

„It is getting used to live without opening a window. But it works fine and from time to time we do it again.

The two have firmly resolved to let the public share in your experience, via website, Youtube and Facebook.

The best thing: Meanwhile they bought the M1-House – you cannot get a better proof.

Statements of the Tenants after 1 Year



Torsten Schoch · Xella Technologie- und Forschungsgesellschaft mbH · 28.04.23 16

Conclusions

By using simple, but well thought design-details, a Plus-Energy house by solid construction is not a distant vision anymore.

It was possible to avoid artificial insulation materials in the walls and in the details of the joints.

The concentration on only one component lead to undesirable developments and an artificial change in the construction market in Europe. Thus, as soon as innovative approaches in combining the construction with service installations in a way that the users benefit directly, the market will increase.

Next to the cost the technically most sensitive part is the energy storage system within the building. Here, a quantum leap for battery systems is needed which are applicable in households.

The M1-house won the Energy Award in the category “Energy Building of the Year” in 2013.


Torsten Schoch · Xella Technologie- und Forschungsgesellschaft mbH · 28.04.23 17

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Sustainable building material oliver kreft