[Equest-users] U-Values

[Bernardo Majano]

I think it is expected if your internal heat loads (during cooling) are
usually higher than external heat gain which means the building is
"trapping heat" . This happened to one of our models where we have a
constant 120 kW electrical heat generation from an industrial
control/electrical room (Southern Ontario climate ). The increased
insulation was actually increasing the cooling load significantly and we
had to find an optimum insulation value. 

 

 

Bernardo Majano, B.Eng.  
Process Designer - Water/Wastewater
 
2001 Sheppard Avenue East Suite 400  Toronto ON M2J 4Z8 
Tel 416 497 8600   Ext 203  Fax 416 497 0342 
www.rvanderson.com 
------------------------------------------------------------------------
-----------
Please consider the environment before printing this email. 

 

________________________________

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Alex
Krickx
Sent: June 9, 2010 12:02 PM
To: Peter Hillermann; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] U-Values

 

I would say that's pretty much to be expected. As R value decreases,
more heat is lost though the envelope, so cooling loads decrease.

 

Typically when you increase R-value, the heating savings will outweigh
the additional cooling cost - however I'm sure there are specific
climates where this is not the case.

 

 

Alex Krickx

Building Energy Specialist

 

1250 Elko Dr, Sunnyvale, CA 94089

(t) 408.541.8124

 

Warning: The information contained in this e-mail may be privileged
attorney-client communications or attorney work product and/or
proprietary and confidential.  If the reader of this message is not the
intended recipient then you have received it in error and any review,
distribution or copying of this message is prohibited and you are to
notify us immediately by reply e-mail and delete the original message
immediately.

 

 

 

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Peter
Hillermann
Sent: Wednesday, June 09, 2010 8:48 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] U-Values

 

To All,

 

I seem to be having some issues with my baseline design and my first
parametric run. (I am working in detail mode with INP file) When I make
my baseline wall value R-13 and change it in my run to R-27 my heating
(MBTU) load goes down by 4% however my electric rate (kWh) goes up 1%. I
don't really understand because I thought both would have gone down. Am
I doing something wrong?

 

Thanks,

 

PETER HILLERMANN

 

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

  

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20100609/6c486800/attachment-0002.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/jpeg
Size: 7181 bytes
Desc: image001.jpg
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20100609/6c486800/attachment-0006.jpeg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/jpeg
Size: 5602 bytes
Desc: image002.jpg
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20100609/6c486800/attachment-0007.jpeg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/jpeg
Size: 3222 bytes
Desc: image003.jpg
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20100609/6c486800/attachment-0008.jpeg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/gif
Size: 2436 bytes
Desc: image004.gif
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20100609/6c486800/attachment-0002.gif>