[Equest-users] Adding Insulation to existing building(UNCLASSIFIED)

[Nick Caton]

Agreeing with John per usual... 

Any building with internal loads will have some break-point where adding
more insulation to the envelope will be detrimental to annual energy
consumption.  It's a bigger deal whenever your internals are relatively
high.  The behavior you're describing is fundamentally sound.

A good thermos keeps my coffee hot longer (great in the wintertime), but
it's not the ideal container when my coffee is scalding-hot and I want
the contents to cool down.  

I've yet to settle on a favorite analogy myself... this just comes to
mind because I need to make a new pot here at work...

NICK CATON, P.E.
SENIOR ENGINEER

Smith & Boucher Engineers
25501 west valley parkway, suite 200
olathe, ks 66061
direct 913.344.0036
fax 913.345.0617
www.smithboucher.com 


-----Original Message-----
From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Eurek,
John S NWO
Sent: Wednesday, September 07, 2011 2:53 PM
To: mikef at facilitymgt.com; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Adding Insulation to existing
building(UNCLASSIFIED)

Classification: UNCLASSIFIED
Caveats: NONE

The results may be accurate, I have found that over insulating can cause
the
cooling load to increase if there are internal loads.

Same way you can get over heated in the winter if you are scooping snow.
Losing energy thru the wall isn't always bad.

-----Original Message-----
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 2:48 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.

Classification: UNCLASSIFIED
Caveats: NONE


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