Document type: European Standard Document subtype: Document stage: Formal Vote Document language: E J:\Intcom\CEN\CEN 156\EN 13779\prEN13779rev_July2006_withfigureslinktfile.doc STD Version 2.1c

CEN/TC 156 Date: 2006-07

prEN 13779

CEN/TC 156

Secretariat: BSI

Ventilation for non-residential buildings Performance requirements for ventilation and room-conditioning systems

Lftung von Nichtwohngebuden Allgemeine Grundlagen und Anforderungen fr Lftungs- und Klimaanlagen

Ventilation dans les btiments non rsidentiels Spcifications des performan-ces pour les systmes de ventilation et de climatisation

ICS:

Descriptors:

prEN 13779:2006 (E)

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Contents Page

1 Scope...................................................................................................................................................... 7

2 Normative references ........................................................................................................................... 7

3 Terms and definitions........................................................................................................................... 8 3.1 General ................................................................................................................................................... 8 3.2 Room conditioning system.................................................................................................................. 8 3.3 Types of air ............................................................................................................................................ 8 3.4 Occupied zone....................................................................................................................................... 8 3.5 Ventilation effectiveness...................................................................................................................... 8 3.6 Specific fan power ................................................................................................................................ 9 3.7 Demand controlled ventilation ............................................................................................................ 9 3.8 Ventilation system .............................................................................................................................. 10

4 Symbols and units .............................................................................................................................. 10

5 Agreement of Design Criteria ............................................................................................................ 11 5.1 General ................................................................................................................................................. 11 5.2 Principles ............................................................................................................................................. 11 5.3 General building characteristics ....................................................................................................... 11 5.3.1 Location, outdoor conditions, neighbourhood................................................................................ 11 5.3.2 Climatic data outdoors ....................................................................................................................... 12 5.3.3 Information on the operation of the building ................................................................................... 12 5.4 Construction data ............................................................................................................................... 12 5.5 Geometrical description ..................................................................................................................... 12 5.6 Use of the rooms................................................................................................................................. 12 5.6.1 General ................................................................................................................................................. 12 5.6.2 Human occupancy .............................................................................................................................. 12 5.6.3 Other internal heat gains.................................................................................................................... 12 5.6.4 Other internal pollution and moisture sources................................................................................ 13 5.6.5 Given extract airflow........................................................................................................................... 13 5.7 Requirements in the rooms ............................................................................................................... 13 5.7.1 General ................................................................................................................................................. 13 5.7.2 Type of control .................................................................................................................................... 13 5.7.3 Thermal and moisture conditions ..................................................................................................... 13 5.7.4 Air quality for people .......................................................................................................................... 13 5.7.5 Air velocities........................................................................................................................................ 13 5.7.6 Noise level ........................................................................................................................................... 13 5.7.7 Lighting ................................................................................................................................................ 13 5.8 System requirements.......................................................................................................................... 14 5.9 General Requirements for Control and Monitoring......................................................................... 14 5.10 General Requirements for Maintenance and Safety of Operation ................................................. 14 5.11 Process from Project Initiation to Operation ................................................................................... 15

6 Classification....................................................................................................................................... 15 6.1 Specification of types of air ............................................................................................................... 15 6.2 Classification of air ............................................................................................................................. 17 6.2.1 General ................................................................................................................................................. 17 6.2.2 Extract air and exhaust air ................................................................................................................. 17 6.2.3 Outdoor air........................................................................................................................................... 19 6.2.4 Supply air ............................................................................................................................................. 20 6.2.5 Indoor Air ............................................................................................................................................. 21 6.3 System tasks and basic system types.............................................................................................. 23 6.4 Pressure Conditions in the Room ..................................................................................................... 24

prEN 13779:2006 (E)

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6.5 Specific fan power .............................................................................................................................. 25 6.6 Heat Recovery ..................................................................................................................................... 26

7 Indoor Environment ............................................................................................................................ 26 7.1 General ................................................................................................................................................. 26 7.2 Occupied Zone .................................................................................................................................... 27 7.3 Thermal Environment ......................................................................................................................... 29 7.3.1 General ................................................................................................................................................. 29 7.3.2 Design assumptions ........................................................................................................................... 29 7.3.3 Air temperature and operative temperature..................................................................................... 29 7.3.4 Air velocities and draught rate .......................................................................................................... 30 7.4 Indoor Air Quality................................................................................................................................ 30 7.4.1 Design assumptions ................................