Opened 6 years ago

#554 new task

HVAC fan flow rate options

Reported by: ewilson Owned by: ewilson
Priority: low Component: Modeling - General
Version: Future Keywords: fan, flow rate, duct
Cc: shorowit, jwinkler, cchriste


We've had a request for a way to account for the energy impact of poorly designed duct systems that have high duct resistance. For typical PSC fans, high duct pressure drop (or high pressure drop caused by fouled filters or coils) can cause flow rates to be less than ideal (potential AC performance impact). Fan power would also be lower than expected.

For ECM/BPM fan motors that are controlled to meet a set flow rate, the only effect is higher fan power.

Since fan curves are necessary to relate pressure drop to flow rate, I suggest we allow flow rate as an input and add functionality that adjust AC performance and fan power accordingly.

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