in the energy modeling result using HAP, the heating load unmet hours turns out to be 2000, however it shouldn't exceed 300 hours, knowing that our system is chilled water not dx units and the Tstat throttling range =1.
You rely on LEEDuser. Can we rely on you?
LEEDuser is supported by our premium members, not by advertisers.
Go premium for
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5899 thumbs up
October 3, 2011 - 9:39 am
The older versions of HAP counted simultaneous hours, so overstating the total. The latest version fixed that issue.
Razan Nejem
Environmental Engineer, LEED AP BD+C64 thumbs up
October 4, 2011 - 2:17 am
Thanks Marcus, I am using version 4.5 is there a later version?
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5899 thumbs up
October 4, 2011 - 8:05 am
I think that is the latest. Sorry I don't know HAP well enough to offer further specific suggestion. Often this issue is related to schedules, most commonly during morning warm, and allowing the fans to cycle during unoccupied periods. At least that is our experience but we use eQUEST.
Check out the HAP Users forum at http://onebuilding.org/