[Equest-users] How to set the COP of a chiller as constant in eQuest?

[Esmireta]

Hi, James,
Thanks for your help!
I found you email on that day. I prefer to use the method to set the curve. Do you know how can I set Avg EIR = Max EIR = Min EIR = the EIR?
Thanks!
Esmi






At 2013-04-17 13:35:43,"James Hess" <JHess at tmecorp.com> wrote:


Perhaps this would come into play if you are modeling a plant with stipulated efficiencies per the USGBC DESv2.0 guidelines with the “Option 2” approach.

 

My post on 4/7/13 covers exactly how to create custom chiller curves for a chiller resulting in a constant EIR that matches the stipulated efficiency value of 4.4 COP + 5% losses (i.e. 0.839 kW/ton).

 

Thanks!

 

Regards,

 

JAH

 

James A. Hess, PE, CEM, BEMP
Energy Engineer
TME, Inc.
Little Rock, AR

Mobile: (501) 351-4667

 

From:equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Joe Huang
Sent: Tuesday, April 16, 2013 9:36 PM
To:equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] How to set the COP of a chiller as constant in eQuest?

 

DOE-2 modifies the COOL-EIR using several curves COOL-EIR-FT as a function of outdoor conditions and COOL-EIR-FPLR as a function of the Part Load Ratio. I suppose you could set those to be constant. Another way would be to just take the Cooling Load from the SS-D report and divide that by your constant COP.  But my question would be, why do you want to do that ?

Joe



Joe Huang
White Box Technologies, Inc.
346 Rheem Blvd., Suite 108D
Moraga CA 94556
yjhuang at whiteboxtechnologies.com
www.whiteboxtechnologies.com
(o) (925)388-0265
(c) (510)928-2683
"building energy simulations at your fingertips"


On 4/16/2013 6:55 PM, Esmireta wrote:

Dear all,

I wonder how to set the COP of a chiller as constant? after I set the chiller type, the electric input ratio type is determined, which means the self-made constant curve cannot be input.

Thanks!

Esmi






 
 
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