[Equest-users] Effect of reflectivity on building energy consumption

[Nimesh Prajapati]

Dear Robert Wichert,

 

Yes, that is what the results telling and as per common logic we feel that
it is ok. But my Question is - Am doing it correctly with my goal? or there
is another approach do in eQuest? Or Whether we can have better option with
another software?

 

While modeling the cases I had kept the interior electrical loads -
Watts/sqft constant for each case study. But Whether changing absoptivity
will affect the interior lighting also?

 

Thanks,


Nimesh Prajapati


HVAC Design Engineer  & Energy Modeler
(+91 9687133492)
email: nimesh at engineersaid.com
Skype: nimonicsone
P Please consider the environment before printing this e-mail.

 

 

From: RobertWichert [mailto:robert at wichert.org] 
Sent: Saturday, September 29, 2012 8:22 PM
To: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Effect of reflectivity on building energy
consumption

 

Dear Nimesh Prajapati,

It looks like your gas consumption went DOWN with increased absorptivity.
This makes sense to me since the building will absorb more solar heat and
keep itself warm.

It looks like your electric consumption went UP with increased absorptivity.
This also makes sense since the building heat loads are increased by the
additional solar heat.

Am I getting this correct?





Robert Wichert P.Eng. LEED AP BD&C
+1 916 966 9060
FAX +1 916 966 9068
 
 
 
 
 
 
 
===============================================

On 9/29/2012 2:37 AM, nimesh.prajapati wrote:

Dear Friends,

 

I have typical case study and friendly saying I don't know whether I am in
correct direction or not, so requesting you to please guide me.

 

I am trying to analyse effect of reflectivity on building energy
consumption. What I had done is as per followings:

 

1.       For simple room created in eQuest I had kept all other parameters
same.

2.       I had taken three case study (Case-01, Case-02, Case-03 ) by
changing the parameters as mentioned in the attached sheet. (Changed
parameters are marked as blue)

3.       Then I have the output results as attached in the sheet.

4.       Results shows that as absorptivity increases there is saving in
cooling but heating have reverse effect.

 

Can anybody help me out? I am trying on myself and will like to have
guidance from you friends.

 

Thanks,

 

Nimesh Prajapati

 

(+91 9687133492)

HVAC Design Engineer & Energy Modeller

Description: Description:
C:\Users\nimesh.prajapati\Desktop\CADD.jpg

P Please consider the environment before printing this e-mail

 






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