[Equest-users] Huge envelope changes having small affect on energy savings

[Kapil Upadhyaya]

Did you find any differences in cooling and heating capacities (SV-A reports) between the two models?

Kapil Upadhyaya, LEED AP
Associate
Kirksey | Architecture
From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Lee Chorney
Sent: Wednesday, August 22, 2012 12:57 PM
To: CleanTech Analytics
Cc: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Huge envelope changes having small affect on energy savings

It is located in Boston, MA.
On Wed, Aug 22, 2012 at 12:52 PM, CleanTech Analytics <jeremiah at cleantechanalytics.com<mailto:jeremiah at cleantechanalytics.com>> wrote:
Is your building in a very mild climate with only a few days per year of extreme weather?


Jeremiah D. Crossett
CleanTech Analytics
503-688-8951<tel:503-688-8951>
www.cleantechanalytics.com<http://www.cleantechanalytics.com>



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On Wed, Aug 22, 2012 at 9:48 AM, Lee Chorney <leec at alliedconsulting.net<mailto:leec at alliedconsulting.net>> wrote:
Hi All,


I recently did a model where I had the same system in both base and proposed but I changed the R-Value from 4 (base) to 20 (proposed). I also changed the window U-value from .80 (base) to .35 (proposed). After I did the run, I saw only a 5% savings between the heating and cooling use in the model. When I looked at the loads I saw the base had twice as much cooling and heating load than the proposed. Does any know why the energy savings would only be 5% when you have a huge difference between the cooling and heating loads?

Thanks,

Lee
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