[Bldg-sim] GSHP with Horizontal Heat Exchangers

Nick Caton ncaton at smithboucher.com
Fri Jun 18 12:41:15 PDT 2010

Hi there!


I am not an Energy Plus user at all, but you may be interested to know
of a free program:  GS2000


This is a simple, small program developed by the Canadians that I rely
on to both size and model Ground loop heat exchangers (GLHX).  It's not
as fully featured or user-friendly as I expect some of the for-cost
software packages are out there, but very functional for what it does
cover.  The included help files are surprisingly helpful, by the way.
The basic procedure I use in eQuest is to determine the annual
temperature behavior of the GLHX using a periphery program like GS2000,
then to model a simple lake/well-type GLHX with a custom annual
temperature schedule to match the actual behavior of the GLHX.  


If nothing else, it's a handy little tool to know about for design/model
verification purposes =).  Here is a screengrab showing that a series of
horizontal GLHX sub-types are worked into the program for input:










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From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of tugrul
Sent: Friday, June 18, 2010 2:03 PM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] GSHP with Horizontal Heat Exchangers


I'm working with Energy Plus modeling of a zero energy house which
incorporates a ground source heat pump (GSHP) with horizontal heat
However, I cannot find any instance of such a system defined as an
Energy Plus model. Examples that I found are all based on vertical bore
Has anyone have experience with Energy Plus modeling of GSHP with
horizontal HXs.

Omer Tugrul Karaguzel
Center for Building Performance & Diagnostics (CBPD)
Carnegie Mellon University
5000 Forbes Ave. Pittsburgh, PA 15213


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