[Equest-users] Auto-size HVAC from Detailed Mode

[John Aulbach]

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

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PartnerEnergy
1990 E. Grand Avenue, El Segundo, CA 90245
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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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