[Equest-users] Central Geothermal System

[Anthony Hardman]

Jacob,

 

I'm sure you've figured this out by now but eQuest has substantial
limitations with regards to the system you're trying to model.  

 

I would start by reading all the pertinent threads dealing with loop to loop
heat pumps and heat recovery chillers to get an idea of what can and can't
be done (lots to learn there).

 

If your "open loop" is a production - reinjection type setup, the initial
temperature will be close (within 5o) to the mean annual outdoor air
temperature.  I'll spare you all the disclaimer's with regards to that
statement!  

 

Anthony Hardman

Building Energy Analyst

LEED AP

 

Geo-Energy Services

14250 E Easter Pl, STE C

Centennial, CO 80112

303-531-5292 v

303-805-3563 f

720-273-9973 c

 <http://www.geoenergyservices.com> www.GeoEnergyServices.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 2:07 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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