[Equest-users] Central Geothermal System

[Nick Caton]

Hi Jacob,

 

Open loop geothermal systems are not explicitly model-able within
eQuest, but you're not out of luck.  Use another program to determine
monthly or weekly annual ground loop temperature behavior (whoever did
your field sizing/design should be able to produce this), define a
Lake/Well GLHX in detailed mode, and create/assign a schedule of those
temperatures to the GLHX.

 

For more information, seek my contributions to the following thread in
the archives (I wrote something of a mini-guide to your situation):  

 

Re: [Equest-users] [Bldg-sim] loop to loop heatpump in equest

 

Sorry to be brief but this should give you a good direction to run in ;)

 

 

~Nick

 

 

 

NICK CATON, E.I.T.

PROJECT ENGINEER

25501 west valley parkway

olathe ks 66061

direct 913 344.0036

fax 913 345.0617

Check out our new web-site @ www.smithboucher.com 

 

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Jacob
Goodman
Sent: Friday, May 21, 2010 3:07 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Central Geothermal System

 

I couldn't find any postings on this subject, but maybe I was just using
the wrong search words so here goes. I'm trying to model a geothermal
system that runs open loop from a large aquifer with a 10 deg change in
the water replaced into the aquifer. There will be 2-4 large heat pumps
operating on hot and cold water loops with one heat pump operating
between the two loops. See attached diagram.

The air side of the system will be 4 pipe fan coils since the
maintenance team is familiar with this type of system. There will be a
condensing boiler for backup heating.

*	how to simulate an open loop ground well?
*	do i need to create hot, cold and GSHP loops under water-side
HVAC...if so how do I tie them together?

Any tips on how to model this system will be very helpful, Thanks much!


Jacob Goodman , LEED AP

 

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