[Equest-users] Heat recovery chiller

[Sam Mason]

Eric,

The information you provided is not quite enough to know what is going
on. I would check the run hours for your chiller to make sure it is
picking up part of the cooling load. Also, it's a bit strange that your
building needs no heat.  If you want to send your input file, I can take
a look at it.

 

Sam

 

--

Sam Mason

Atelier Ten

 

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Eric
O'Neill
Sent: Thursday, August 20, 2009 4:53 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Heat recovery chiller

 

All,

I'm trying to model a hot water loop that's being heated entirely by a
heat recovery chiller (htrec) and supplying heating to a VAV system. I'd
like to utilize condenser heat prior to rejection to the dry coolers (I
have a large cooling load year around). The trouble is, even though it
appears like it is set up correctly, the system doesn't want to reject
ANY heat to the HW loop. When I just created the loop and ran a
simulation, eQuest gave me an error saying I had no primary heat source
on the HW loop. I tried adding a dummy boiler with virtually no
capacity, and that got rid of the error and allowed me to run, but I
still had no heat going to my HW loop. 

Has anyone had success with this? When reading the DOE2.2 dictionary, it
appears this is exactly what the htrec chiller was designed to do, but
nothing I change makes any difference. If anyone's willing, I can send
you a copy of my input and pd2 files to look at.

Thanks,

Eric O'Neill

Mechanical Engineer, LEEDAP

Michaels Engineering

400 Main Street, Ste 200

La Crosse, WI 54601

direct: 608-785-3328

main: 608-785-1900

fax: 608-784-2270

elo at michaelsengineering.com

http://www.michaelsengineering.com

<<Water Loops.png>> <<Heat Recovery Setup.png>> 


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