What is BS EN 16798-5-1 - Ventilation for buildings about?
BS EN 16798-5-1 is the first subpart of the fifth part of the multi-series standard that covers the energy performance calculation of mechanical ventilation and air conditioning systems, including humidification and dehumidification. It takes into account the generation (air handling unit) and distribution (duct system) parts. It includes a simplified calculation of adiabatic cooling systems. This method is focused on large customized ventilation and air conditioning systems, typically used in commercial buildings, although the application is not restricted on the basis of building or space use type. A calculation method for ventilation systems with integrated heating/cooling generation, including domestic hot water generation, using a monthly or seasonal calculation interval or a bin method, is provided in a separate standard, EN 16798-5-2.
Note:
This method does not include humidification and dehumidification or adiabatic cooling.
It does not cover the emission part (calculation of the required volume flow rates and/or supply air conditions), which is covered in EN 16798-7. It does not include the calculation of heating/cooling generation.
Who is BS EN 16798-5-1 - Ventilation for buildings for?
BS EN 16798-5-1 on ventilation for buildings is useful for:
- Regulators of EPB standards
- Manufacturer of cooling systems
- Construction industry
- Civil engineer
- Architects
Why should you use BS EN 16798-5-1 - Ventilation for buildings?
BS EN 16798-5-1 is part of a series of standards aiming at international harmonization of the methodology for the assessment of the energy performance of buildings, called “set of EPB standards”.
The method covers the calculation of:
- The volume flow rates provided to the ventilation zones served by the system, based on the required values
- The supply air temperature and moisture content, based on the required values
- The ventilation generation input (electric energy required by fans)
- The humidification generation input
- Heating (including humidification in case of reheat with adiabatic humidification) and cooling input to the air handling unit (to be transferred to the connected heating and cooling distribution systems calculation)
- The recoverable heat or cold losses from ventilation/air conditioning system for heating or cooling
- The ventilation auxiliary energy (electric energy for drives of e.g., Rotary or pumped circuit heat recovery devices, control devices, actuators, etc.)
- The electric energy required for humidification (only for specific humidifier types)
- The humidification auxiliary energy
BS EN 16798-5-1 helps you to specify the choices between methods, the required input data and references to other standards.
What’s changed since the last update?
BS EN 16798-5-1:2017 supersedes BS EN 15241:2007 which is withdrawn.
The revision includes changes:
- For a rearrangement of content versus EN 15242:2007, in order to better fit in the modular structure given in EN ISO 52000-1
- To cover full air conditioning systems (including heating, cooling humidification, dehumidification; definition see the module M5-1 standard)
- For an improved fan energy calculation, taking into consideration control strategies according to CEN/TC 247 and fan product standards/data
- For an improved calculation of different types of heat recovery devices (air-to-air heat exchangers, rotary and pumped circuit), delivering the efficiency and auxiliary energy depending on control, including moisture transfer
- For the consideration of recirculation, including control
- For an improved humidification calculation for different humidifier types, including auxiliary energy
- For the calculation of adiabatic cooling
- The formatting according to the new rules set in CEN/TS 16629
- The consideration of ISO/TC 205 work performed in the meantime