[Bldg-sim] GSHP in hot climate

[yizhao1 at vt.edu]

According to the source we got,  the ground temperature is 85F, although the
ground temper in a lots of other locations in the world are about 55F.

Do you have some other source for the ground temperature?

Thanks,

Ying

Quoting Edward.A.Decker at jci.com:

> For a GSHP, the surface temperature of the earth should not matter...
> isn't the temperature below the surface what makes the GSHP work? A
> constant temperature of ~55 deg F.
>
>
> Edward A. Decker
> Project Development Engineer
> Building Efficiency
>
> Johnson Controls
> 1001 Lower Landing Road
> Suite 409
> Blackwood, NJ 08012
> Tel : 610-675-9603
> Fax : 856-228-6296
> Email : edward.a.decker at jci.com
> URL : http://www.johnsoncontrols.com
>
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> yizhao1 at vt.edu
> Sent by: bldg-sim-bounces at lists.onebuilding.org
> 08/06/2008 11:50 PM
>
> To
> bldg-sim at onebuilding.org
> cc
>
> Subject
> [Bldg-sim] GSHP in hot climate
>
>
>
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>
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> Hi-
>
> We modeled a building with GSHP in a hot climate (zone 1), so it is almost
> used
> for cooling only. The air-side is PVAVS. water-cooled condenser with GSWL.
> The
> cooling COP input is ~5. However, the system performs almost the same as
> ordinary air-cooled chillers.
>
> We think the reason may be the high earth temperature (~85 F is used due
> to the
> local
> climate).
>
> GSHP does not appear to be a solution for hot climate? Any one has some
> resource
> of real data for this?
>
> Thanks,
> Ying
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