[BLDG-SIM] Huge heating demand

[Vikram Sami]

I'm not sure that's unreasonable - especially for a building of that
size (210 ft2) - the skin loads are pretty significant. There also seems
to be a large glazing area. Looking at weather charts for London, the
summers are really mild (highs in the upper 70s is a non existent summer
for a lot of places), so for a skin dominated building, your loads
wouldn't be that high. The winters are pretty cold though.
 
I guess it depends on how you modeled your internal heat gain (lights,
equipment, people) , outside air changes and infiltration rates. If you
are trying to model a small room in a larger building, then you might
want to make sure you have the internal walls modeled adiabatically (or
some other appropriate way). Looking at the balance point temperature
would also be a good gut check. 
 

Vikram Sami, LEED AP 
Direct Phone 404-253-1466 | Direct Fax 404-253-1366 

LORD, AECK & SARGENT ARCHITECTURE
1201 Peachtree Street NE, Suite 300, Atlanta, GA 30361 
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________________________________

From: BLDG-SIM at gard.com [mailto:BLDG-SIM at gard.com] On Behalf Of Kevin
Burke
Sent: Friday, June 22, 2007 11:29 AM
To: BLDG-SIM at gard.com
Subject: [BLDG-SIM] Huge heating demand



Hi All,

 

I'm running a 210 ft2 room in eQuest and have assigned generic fabric
spec and a fan coil system with baseboard heating and the location is
London. One of the facades is glazing. When looking at the demand
summary the heating demand is massive relative to all other energy
demands (4 times greater than cooling demand in Summer!). Could anyone
suggest what I might be doing wrong? I've looked at air flow rates,
u-values, glazing and nothing seems to reduce it to what may be
expected.

 

Kind Regards,

 

Kevin Burke

 

 

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