[Equest-users] Electricity consumption (HVAC part) in Winter

John Aulbach jra_sac at yahoo.com
Wed Nov 21 09:05:06 PST 2012

Henry (?):

Isn't Hong Kong a very moist climate (similar to Malaysia)?

If you would not mind sharing your .INP and .PD2 files with us, perhaps someone on the Bldg-Sim forum can offer you advise. Otherwise, we are flying blind (especially HVAC system type and hours of operation).

John R. Aulbach, PE, CEM
Senior Energy Engineer

2154 Torrance Blvd, Ste. 100, Torrance, CA 90501
W: 888-826-1216, X254| D: 310-765-7295 | F: 310-817-2745
www.ptrenergy.com| jaulbach at ptrenergy.com

 From: chik king ho <kinghochik at hotmail.com>
To: Equest <equest-users at lists.onebuilding.org> 
Sent: Wednesday, November 21, 2012 1:29 AM
Subject: [Equest-users] Electricity consumption (HVAC part) in Winter

Hello all,

I am simulating a model in Hong Kong and the winter period is from November to March. I found that the electricity use (HVAC part) for winter in my simulation is lower than the actual electricity use(HVAC part) by 15-20% even I have used the air conditioning system with same data in summer (e.g. the temperature difference for condenser water loop and chilled water loop is still 10K). So,  I am confused that how it happens and how can I make the electricity use (HVAC part) larger so that the simulation is more similar to the actual one.

P.S. HVAC part is the energy consumption of "Space cooling" + "Heat rejection" + "Pump & Aux." + "Ventilation fans"

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