[Bldg-sim] Fundamentals: SEER/HSPF conversions
Nick Caton
ncaton at smithboucher.com
Tue Mar 8 11:35:55 PST 2011
I understand HSPF is fundamentally the same thing as SEER, only it's
representing a heating season instead of a cooling season.
When handling SEER, I used the following equation to come up with a
seasonally averaged cooling EER:
EER = SEER * 0.875
My limited understanding is that 0.875 is a conceptually a constant
representing a "part load cycling factor" of sorts for a typical cooling
season. I've read multiple times this constant should vary with climate
(commonly, "Georgia = 0.8" and "California = 0.9"). While that makes
sense to me, I've yet to see a citable climate map or similar reference
breaking down what factor to use where... so up to this point I've stuck
with 0.875 for simplicity's sake.
My root question is: Is there a comparable "part load cycling factor,"
for one or more climates, for converting HSPF to a seasonally averaged
heating COP/EER?
Put another way: EER = HSPF * ???
~Nick
NICK CATON, E.I.T.
PROJECT ENGINEER
Smith & Boucher Engineers
25501 west valley parkway
olathe ks 66061
direct 913 344.0036
fax 913 345.0617
www.smithboucher.com
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