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

[CleanTech Analytics]

Are your systems set to auto-size?
Your issue could be part load efficiencies for your HVAC equipment.


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


*

This document may contain valuable information proprietary to CleanTech
Analytics which is private and confidential. It may not be shared, copied,
stored or transmitted in any form without the prior written consent of
CleanTech Analytics
*



On Wed, Aug 22, 2012 at 9:56 AM, Lee Chorney <leec at alliedconsulting.net>wrote:

> It is located in Boston, MA.
>
>
> On Wed, Aug 22, 2012 at 12:52 PM, CleanTech Analytics <
> 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*
>> *www.cleantechanalytics.com* <http://www.cleantechanalytics.com>
>>
>>
>> *
>>
>> This document may contain valuable information proprietary to CleanTech
>> Analytics which is private and confidential. It may not be shared, copied,
>> stored or transmitted in any form without the prior written consent of
>> CleanTech Analytics
>> *
>>
>>
>>
>> On Wed, Aug 22, 2012 at 9:48 AM, Lee Chorney <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
>>>
>>> _______________________________________________
>>> Equest-users mailing list
>>> http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org
>>> To unsubscribe from this mailing list send  a blank message to
>>> EQUEST-USERS-UNSUBSCRIBE at ONEBUILDING.ORG
>>>
>>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20120822/593c0168/attachment-0002.htm>