[Equest-users] Adding Insulation to existing building

[Peter Hillermann]

Mike,

 

We had similar issues in the models and real life which we rectified after our first LEED project. Insulation keeps heat in or cool in your building. Remember not only would it keep cool air in the summer from moving out of a building through the walls, it also keeps that same heat from moving out through the walls in the summer if generated by some piece of equipment that generates large amounts of heat. So it all depends on what you are simulating in the building. Think of your insulation as trapping whatever is happening in the building. Insulation is not always the key. Sometimes using a form of natural ventilation like a louver can help offset some of those differences in temperature and change some of the issues you are having with your electric bill or gas bill depending on what you are using for heating and cooling.

 

Thanks,

 

PETER HILLERMANN

 

 <mailto:peterh at westallarchitects.com> peterh at westallarchitects.com

 

westall

architects

3404 pierce drive

chamblee, georgia 30341

 

o 770.458.4113

f  770.458.5352

c 678.898.2936

 

westallarchitects.com

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From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of mikef at facilitymgt.com
Sent: Wednesday, September 07, 2011 3:48 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Adding Insulation to existing building

 

I have an existing 360' X 140' metal building with offices at one end. They have the standard 4" thick insulation trapped between girts and panels. In my building simulation eQuest got within 5% of actual utility bills, but when I started adding insulation the model gas heating bill went down and the electric cooling bill went up. Any ideas what I am doing wrong?

Thanks 

 

Mike Freeman PE.

Facility Management & Engineering, Inc.

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