User Manual

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4.5.2. Detailed BACS efficiency factor for DHW
The BAC efficiency factors for DHW systems are calculated based on the following conditions:
· Operation timer; the time when the DHW storage tank is charged and maintained at the setpoint
temperature
· Mean DHW storage tank temperature
Detailed factors are accounting for the BAC impact on energy performance of DHW systems by
covering DHW as a single functionality.
Non-residential building types
Detailed BACS efficiency factors f
BAC,DHW
D C B A
Non energy
efficient
Standard
(reference)
Advanced
energy
efficiency
High energy
performance
Offices
1.11 1.00 0.90 0.80
Lecture halls
Educational buildings (schools)
Hospitals
Hotels
Restaurants
Wholesale and retail buildings
Other types:
· Sport facilities
· Storage
· Industrial facilities
· etc.
Residential building types
Detailed BACS efficiency factors f
BAC,DHW
D C B A
Non energy
efficient
Standard
(reference)
Advanced
energy
efficiency
High energy
performance
· Single family dwellings
· Multi family houses
· Apartment houses
· Other residential or residential-like
buildings
1.11 1.00 0.90 0.80