[Equest-users] Auto-size HVAC from Detailed Mode
John Aulbach
jra_sac at yahoo.com
Wed Sep 29 14:16:23 PDT 2010
Hi Ashley:
Don't know what is "legal" in LEED, but try reducing your semsible loads
fraction for the kitchen and laundry down (say to 0.1). Perhaps assuming much
heat goes out the exhausts for these items.
Also, increase your HVAC airflows.
Worth a try.
John R. Aulbach, PE, CEM
Senior Energy Engineer
________________________________
PartnerEnergy
1990 E. Grand Avenue, El Segundo, CA 90245
W: 888-826-1216, X254| D: 310-765-7295 | F: 310-817-2745
www.ptrenergy.com| jaulbach at ptrenergy.com
________________________________
From: "Weekly, Ashley" <aweekly at pryor-morrow.com>
To: equest-users at lists.onebuilding.org
Sent: Wed, September 29, 2010 1:48:38 PM
Subject: [Equest-users] Auto-size HVAC from Detailed Mode
Hello everyone. I’m working on a baseline 2-story residential model using
PTAC’s for LEED. I’m having problems complying with the unmet hours in several
locations. I have commercial cooking equipment and laundry machines as my only
large loads. I have entered my calculated heating and cooling capacities and my
calculated CFM for each space into detailed mode. To help with my unmet hours,
I bumped my sizing ratio up to 1.25 and set my throttling range at 6. Still
high unmet hours. I was wondering if there is a way to switch heating and
cooling capacities back to auto-size from detailed mode or do I just have to
bump my capacities up until they cover my hours?
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