[Bldg-sim] Unusual Result

[Hussein Abaza]

You might also check 100% outside air during late night, this might even help more 
----- Original Message ----- 
From: "Glenn Mercurio" <glenmerc at sonic.net> 
To: "Jaigath Chandraprakash" <cjaigath at yahoo.com>, bldg-sim at lists.onebuilding.org 
Sent: Friday, September 24, 2010 6:07:52 PM GMT -05:00 US/Canada Eastern 
Subject: Re: [Bldg-sim] Unusual Result 




Hi Jaigath, 

With such high internal loads, your building may be losing more heat through the windows with the higher U-value of 0.7 and thus cause for less cooling as less heat is built up within the building. 

Glenn Mercurio 

Energy Analyst, LEED AP 





From: bldg-sim-bounces at lists.onebuilding.org [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Jaigath Chandraprakash 
Sent: Friday, September 24, 2010 2:59 AM 
To: bldg-sim at lists.onebuilding.org 
Subject: [Bldg-sim] Unusual Result 





The project I am working on is an office building that operates 20 hrs per day with most of the loads occuring at night and low occupancy on daytime. It is a cooled by a DX roof unit and has a very high internal load. No heating equipment is required because the building is in Climate 1. I was surprised that when I changed my window U-value from 0.3 to 0.7 I got less cooling consumption. I always thought that getting low u-value will give me less coling consumption. Can somebody tell me why I am getting less cooling when I use a higher window U-value? 





Thanks, 





Jaigath 


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-- 





Dr. Hussein Abaza, Assistant Professor 



Construction Management Department 



SCHOOL OF ARCHITECTURE ’ 



CIVIL ENGINEERING TECHNOLOGY 



  And CONSTRUCTION 



1100 South Marietta Parkway , Marietta , GA 30060-2896 



Website: www.spsu.edu/cost   Tel: 678-915-3719 Fax: 678-915-4966 



E-mail: ahussein at spsu.edu 






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