[Bldg-sim] [Equest-users] Problems of energy simulation(HVAC part) in winter

[chik king ho]

Hi all,
Thank you for commends. However, I still cannot get the things done because I do not understand some of yours words. 
For Chris, where can I adjust the infiltration and ventilation air during winter months? And I suppose HVAC systems, fan and pump running hours are same for both winter and summer since the office hours in winter and summer are same in Hong Kong. 
For Jeff, what do you mean by running the 4 months (Jan -Feb and Nov-Dec) in two runs? What are the runs specified for? Occupancy? HVAC systems? or other?
And any other people can give me some suggestions on solving the problems?
I think the big problem of my simulation is that winter's situation should be different from summer's situation but I still do not know which parts should I focus on and adjust the data.
Henry

From: jhaberl at tamu.edu
To: cj at enersave.ca; kinghochik at hotmail.com; bldg-sim at lists.onebuilding.org; equest-users at lists.onebuilding.org
Subject: RE: [Bldg-sim] [Equest-users] Problems of energy simulation(HVAC part) in winter
Date: Mon, 3 Dec 2012 19:53:22 +0000








Chris,
 
...to match actual data, you'll need 2 runs...Jan - Feb and Nov - Dec, then merge the two runs.
 
Jeff

 
8=!  8=)  :=)  8=)  ;=)  8=)  8=(  8=)  8=()  8=)  8=|  8=)  :=')  8=)8=?



Jeff S. Haberl, Ph.D.,P.E., FASHRAE..............jhaberl at tamu.edu



Professor............................................................Office Ph: 979-845-6507



Department of Architecture.............................Lab Ph:979-845-6065



Energy Systems Laboratory.............................FAX: 979-862-2457



Texas A&M University.....................................77843-3581



College Station, Texas, USA, 77843..................URL:www.esl.tamu.edu



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From: bldg-sim-bounces at lists.onebuilding.org [bldg-sim-bounces at lists.onebuilding.org] on behalf of Chris Jones [cj at enersave.ca]

Sent: Monday, December 03, 2012 8:29 AM

To: chik king ho; bldg-sim at lists.onebuilding.org; Equest

Subject: Re: [Bldg-sim] [Equest-users] Problems of energy simulation(HVAC part) in winter





Just a quick guess.  Have you confirmed the outdoor air entering the building (infiltration plus ventilation air) during those winter months?  Also confirm HVAC systems run hours.  A balancing report is a good place to start.  Logging fan
 and pump hours helps especially if the BAC is already keeping those logs.  







At 09:50 PM 02/12/2012, chik king ho wrote:

Hi all,



I have simulated a building in Hong Kong by using Equest. In Hong Kong, winter is from Nov. to Feb. But I found that my simulation in HVAC part (end-use: space cooling + heat reject + vent. fan + pumps & aux.) in winter is much lower than the actual energy
 consumption in HVAC. So, could anyone help me to find why this happens and how can I solve it? inp and pd2 flies are attached for reference.



Henry





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Christopher Jones, P.Eng.

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Toronto, ON M5E1W7

Tel. 416-203-7465

Fax. 416-946-1005

email cj at enersave.ca




 		 	   		  
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