[Equest-users] Process heat exchanger

[Dave Weigel]

Thank you Jeremy, that makes more sense.  I'll try it out.

Dave

David R. Weigel, PE
Member / President
The Watt Doctors, LLC
1189 Golden Circle SW
Lilburn, GA 30047-1913
678-353-6394 office
901-619-1716 cell
-----Original Message----- 
From: Jeremy McClanathan
Sent: Friday, April 06, 2012 11:25 AM
To: 'Dave Weigel' ; equest-users at lists.onebuilding.org
Subject: RE: [Equest-users] Process heat exchanger

Another option might be to create a secondary CHW loop and apply the process 
load directly to the loop.  You could create a loop pump to serve the loop 
and match the head, flow, etc.
Jeremy.

___________________________________________
Jeremy McClanathan, P.E., BEMP, HFDP, LEED® AP BD+C

4200 194th St SW, Ste 200, Lynnwood, WA 98036
P 425-672-1071 | F 425-778-8769
??Please consider the environment before printing this email.

-----Original Message-----
From: Dave Weigel [mailto:dave.weigel at thewattdoctors.com]
Sent: Friday, April 06, 2012 6:42 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Process heat exchanger

Hi again group,

I must model a process heat exchanger (actually, several of them).  They 
take chilled water from the building HVAC plant.  I am considering modeling 
the loads as internal plug loads in a space of their own with no exposures, 
lights, people, or any other additional load.  I will cool that space with a 
two-pipe fan coil unit, no outdoor air, to get the heat into the chilled 
water loop.  I'll set up the fan power to match what the actual designed 
pump power will be for the heat exchanger.  I'll explain this all with my 
LEED documentation and include the calculation of fan power versus pump 
power.  The loads don't vary when they are on, so I don't have to worry 
about the differences in fan curve versus pump curve in eQuest.

Do you think this is the best way to handle these heat-exchanger loads?  Do 
you think it'll fly through a LEED review?

Thanks for any experience or opinions!

Dave

David R. Weigel, PE
Member / President
The Watt Doctors, LLC
1189 Golden Circle SW
Lilburn, GA 30047-1913

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