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BS EN 16798-3:2025 - TC Tracked Changes. Energy performance of buildings. Ventilation for buildings - For non-residential buildings. Performance requirements for ventilation and room-conditioning systems (Modules M5-1, M5-4), 2025
- A-30452451.pdf [Go to Page]
- undefined
- European foreword
- Introduction
- Figure 1 — Generic concept relation of air replacement
- 1 Scope
- Table 1 — Position of this standard (in case M5-1, M5-4), within the modular structure of the set of EPB standards
- 2 Normative references
- 3 Terms and definitions
- 4 Symbols and subscripts
- Table 2 — Symbols and units
- 5 Description of the method and routing [Go to Page]
- 5.1 Output of the method
- 5.2 General description of the method [Go to Page]
- 5.2.1 Input data for energy calculation
- Table 3 — Input data for energy calculation [Go to Page]
- 5.2.2 Source of data for energy calculation
- 6 Output data for energy calculation
- Table 4 — Output data for energy calculation
- 7 Indoor environment [Go to Page]
- 7.1 General
- 7.2 Occupied zone
- Table 5 — Dimensions for the occupied zone
- Figure 2 — Description of the occupied zone
- 8 Agreement of design criteria [Go to Page]
- 8.1 General
- 8.2 Principles
- 8.3 General building characteristics [Go to Page]
- 8.3.1 Location, outdoor conditions, neighbourhood
- 8.3.2 Design weather data
- 8.3.3 Information on the operation of the building
- 8.4 Construction data
- 8.5 Geometrical description
- 8.6 Use of the rooms [Go to Page]
- 8.6.1 General
- 8.6.2 Human occupancy
- 8.6.3 Internal heat gains
- 8.6.4 Internal pollution and moisture sources
- 8.6.5 Given extract airflow
- 8.7 Requirements in the rooms [Go to Page]
- 8.7.1 General
- 8.7.2 Type of control
- 8.7.3 Thermal comfort
- 8.7.4 Air quality for people
- 8.7.5 Noise level
- 8.7.6 Lighting
- 8.8 System requirements
- 8.9 Heat transmission of surfaces of ventilation systems
- 8.10 General requirements for control, adjustment and monitoring
- 8.11 General requirements for maintenance and safety of operation
- 8.12 Process from project initiation to operation
- 8.13 Supply air humidity
- 9 Classification [Go to Page]
- 9.1 Specification of types of air
- Table 6 — Specification of types of air
- Figure 3 — Illustration of types of air using numbers given in Table 6 [Go to Page]
- 9.2 Classification of air [Go to Page]
- 9.2.1 Extract air and exhaust air
- Table 7 — Classification of extract air (ETA, SET) and exhaust air (EHA, SEH) [Go to Page]
- 9.2.2 Outdoor air
- Table 8 — Classification of outdoor air (ODA) based on particle matter
- Table 9 — Classification of outdoor air (ODA) based on gaseous pollutants [Go to Page]
- 9.2.3 Supply air
- Table 10 — Classification of supply air based on PM2,5 and PM10
- Table 11 — Classification of supply air based on gaseous pollutants [Go to Page]
- 9.2.4 Indoor air
- 9.2.5 Exhaust air
- 9.2.6 Recirculation and secondary air
- 9.3 System functions and basic system types [Go to Page]
- 9.3.1 General
- 9.3.2 Types and configurations
- Table 12 — Basic system types of ventilation systems
- Table 13 — Types of Ventilation-, Air-conditioning-, and Room Conditioning-Systems based on functions [Go to Page]
- 9.3.3 Controls and operation
- Table 14 — Possible types of control of the air flow rate [Go to Page]
- 9.4 Design air flow balance
- Table 15 — Categories of design air flow balance in the area [Go to Page]
- 9.5 Specific fan power [Go to Page]
- 9.5.1 General
- 9.5.2 Classification of specific fan power [Go to Page]
- 9.5.2.1 General
- Table 16 — Classification of specific fan power [Go to Page]
- 9.5.2.2 Extended specific fan power
- Table 17 — Extended PSFP for additional components [Go to Page]
- 9.5.3 Calculating the power demand of the fan
- 9.5.4 Specific Fan Power of an entire building
- 9.5.5 Specific Fan Power of Individual Air Handling Units
- 9.5.6 AHU related PSFP values
- Figure 4 — AHU related PSFP values [Go to Page]
- 9.6 Heat recovery section [Go to Page]
- 9.6.1 General
- 9.6.2 Requirements for heat recovery
- 9.6.3 Transfer of humidity
- 9.6.4 Icing and defrosting
- 9.6.5 Transfer of pollutants
- 9.7 Filtration [Go to Page]
- 9.7.1 General aspects
- Table 18 — Required average filtration efficiency based on particle outdoor air quality
- Table 19 — Required / Recommended integrated gas filtration efficiencies for the respective gas [Go to Page]
- 9.7.2 Filter maintenance
- 9.8 Leakages in ventilation systems [Go to Page]
- 9.8.1 General
- 9.8.2 Leakages in heat recovery section
- Table 20 — Classification of EATR [Go to Page]
- 9.8.3 Classification of outdoor air correction factor at heat recovery systems
- Table 21 — Classification of outdoor air correction factor [Go to Page]
- 9.8.4 Leakages at Air Handling unit (AHU) casing
- 9.8.5 Filter bypass leakages
- 9.8.6 Leakages of air distribution systems [Go to Page]
- 9.8.6.1 General
- 9.8.6.2 Classification of air distribution leakage
- Table 22 — Leakage types of air distribution
- Table 23 — Classes of air distribution tightness
- 10 Calculation and energy rating [Go to Page]
- 10.1 Ventilation effectiveness, contamination removal effectiveness and air diffusion [Go to Page]
- 10.1.1 General
- 10.1.2 Calculation of ventilation air volume flow
- 10.2 Calculation of air volume flow rates [Go to Page]
- 10.2.1 Design air volume flow design based on heating, cooling loads and dehumidification
- 10.2.2 Extract air flow rates
- 10.3 Energy rating of ventilation systems [Go to Page]
- 10.3.1 General
- 10.3.2 Specific Fan Power of an entire building
- 10.3.3 Heat recovery efficiency
- 10.3.4 Primary energy use of ventilation
- Annex A (normative) Input and method selection data sheet — Template
- A.1 General
- A.2 References
- Table A.1 — References
- A.3 Design data for energy calculation — Typical range for SFP categories
- Table A.2 — Typical range for the category of SFP
- A.4 Design data
- A.4.1 Effectiveness of ventilation, contamination removal effectiveness and air distribution
- A.4.2 Filtration
- Table A.3 — Recommended minimum filter classes per filter section (definition of filter classes according to the EN ISO 16890 series)
- A.4.3 Outdoor air correction factor (OACFS)
- A.4.4 Leakage at Air Handling unit (AHU) casing
- A.4.5 Leakage in air distribution systems
- Annex B (informative) Input and method selection data sheet — Default choices
- B.1 General
- B.2 References
- Table B.1 — References
- B.3 Default design data for energy calculation
- B.3.1 Typical range for SFP categories
- Table B.2 — Typical range for the category of SFP
- B.4 Default design data
- B.4.1 Effectiveness of ventilation and air distribution
- B.4.2 Filtration
- Table B.3 — Recommended minimum filter classes per filter section (definition of filter classes according to the EN ISO 16890 series.
- B.4.3 Outdoor air correction factor (OACFS)
- B.4.4 Leakage at Air Handling unit (AHU) casing
- B.4.5 Leakage in air distribution systems
- Annex C (normative) Requirements for intake and exhaust openings
- C.1 Intake and exhaust openings0F
- C.1.1 Location of intake openings
- C.1.2 Location of exhaust openings
- C.1.3 Distance between intake and exhaust openings
- C.1.3.1 General
- C.1.3.2 Distance between intake and exhaust openings for air volume flows > 0,5 m3/s
- Figure C.1 — Recommended minimum distances between exhaust discharges and outdoor air intakes for air volume flows > 0,5 m3/s
- Table C.2 — Examples — Distance between intake and exhaust opening
- C.1.3.3 Distance between intake and exhaust openings for air volume flows ≤ 0,5 m3∙s−1
- Table C.3 — Recommended minimum distance between air intake and exhaust opening
- Annex D (informative) Recirculation and secondary air filtration quality to reduce airborne pathogens
- D.1 General
- Figure D.1 — Efficiencies of air filters against relevant particle size range
- D.2 Recirculation and secondary air quality classes
- Table D.1 — Recirculation Air Quality Classes RCA 1 to RCA 6 and Secondary Air Quality Classes SEC 1 to SEC 6
- D.3 Recommended air filter classes
- Table D.2 — Recommended air filters (one filter stage)
- D.4 Recommendations for system design
- Annex E (informative) National Data for Design Criteria — Default choices
- E.1 General
- E.2 Design weather data
- Table E.1 — Examples for design weather data
- E.3 Air classification
- E.3.1 Outdoor air classification
- Table E.2 — Examples of limit values for outdoor air pollutant
- E.4 Distance between intake and exhaust for roof mounted air handling units
- Table E.3 — Recommended minimum distance
- E.5 Space recommendations for components and systems1F
- E.5.1 General
- E.5.2 Space requirements for plant-rooms for air handling systems
- Figure E.1 — Room height and floor area for plant rooms
- Figure E.2 — Disposition of air handling systems (plan view)
- E.5.3 Space requirements for refrigerating and water distribution plants
- Figure E.3 — Room height and floor area for refrigerating and water distribution plants
- E.5.4 Cross-section of shafts
- Figure E.4 — Cross-section of shafts
- E.5.5 Other requirements
- E.6 Example for classification of outdoor air
- Table E.4 — Summary of classification of outdoor air, examples
- Bibliography [Go to Page]
