[Bldg-sim] Spam:Re: eQuest GSHP
James Hess
JHess at tmecorp.com
Fri Jun 27 14:13:29 PDT 2008
Todd,
A good idea someone passed on to me is to make a real simple model in the
wizard, then take that to the detailed interface and you can see how eQuest
sets up and connects everything.
I had to do this earlier this week because I had a heavily developed model
that was already in the detailed interface. I had to change the system type
from air cooled chillers and AHU's to ground source heat pumps with a loop
and a ground HX. I couldn't go back to the wizard because I would lose lots
of other valuable inputs. Therefore, I studied the simple example model in
order to see how to set up everything correctly in my detailed model and it
worked.
One thing I didn't know is that eQuest uses the "Pkgd Var Vol Var Temp"
system for a WSHP/GSHP system. But, the option for "WL/GS Ht Pump" is set to
"Yes", the condenser type is set to "Water Cooled" and the CW Loop is
assigned to my "GSHP Loop". Previously, I tried using the "Water Loop HP"
air system type and I couldn't get the program to work, even though that
system seemed like the intuitive air system choice. In my case, I had my
loop and ground HX defined and in place before configuring my air systems so
that I had a loop to assign the air systems to. I would define the loop
first, then the ground HX. Within the ground HX, the "Circulation Loop
Assignment" parameter is where you assign the HX to your loop.
Hope this rambling helps a bit ...
Regards,
JAH
James A. Hess, PE, CEM
Energy Engineering Team Leader
TME, Inc.
5800 Evergreen Drive
Little Rock, AR 72205
ph 501-666-6776
fax 501-663-8888
cell 501-351-4667
jhess at tmecorp.com <mailto:email at tmecorp.com>
www.tmecorp.com <http://www.tmecorp.com/>
From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Steve Mignogna
Sent: Thursday, June 26, 2008 9:12 AM
To: Todd Lagus
Cc: bldg-sim at lists.onebuilding.org
Subject: Spam:Re: [Bldg-sim] eQuest GSHP
Todd-
Are you trying to set up a centralized or decentralized GSHP?
--
Steve Mignogna
Atelier Ten
On Mon, Jun 16, 2008 at 4:36 PM, Todd Lagus <TLagus at sebesta.com> wrote:
Hello,
I'm sure this has been addressed at some point, but does anyone have
experience or tutorials in setting up ground source heat pump loops in
eQuest? I have been able to set up the ground source heat exchanger, but I'm
unsure of the methods and limitations for linking the ground source loop to
the water/water or water/air heat pump component. Are both situations
possible? For an airside device, would I set up the ground loop, then set up
the airside device and select the particular water source loop with which to
link it?
Thanks in advance for any advice.
Todd
Todd Lagus, EIT
Mechanical Engineer
Sebesta Blomberg
2381 Rosegate
Roseville, MN 55113
Phone: 651-634-7236
Fax: 651-634-7400
www.sebesta.com <http://www.sebesta.com>
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--
Steve Mignogna
Atelier Ten
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