Advise sought for large off grid PV system; 480 volt 3-phase [RE-wrenches]

[Kurt Albershardt]

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How far is far?  Rehau Insulpex might be an option for moving heat around.

The adsorption chillers start at $98k for the smallest (25 ton) model, and shipping adds another $10-12k.  They don't make sense for many apps, but with a COP of ~0.6 and no nasty chemical issues like absorption chillers they are an interesting new (to me) option.


Don't know what the other cooling loads look like, but I think I'd be taking a long hard look at them in  terms of overall budget.  Any chance they could use a water source heat pump of some kind?





--On Thursday, March 29, 2007 2:00 PM -0700 Larry Crutcher <larry at starlightsolar.com> wrote:
>
>
> Hi Kurt,
>
> The generator building is far from the load locations. All the waste heat is lost. Because we are building a battery and inverter building attached to the generator building, perhaps this will help cool it.
>
> Thanks for the suggestion.
>
> Larry Crutcher
> General Manager
> Starlight Solar
>
> Retail Store & Shipping: 2998 Shari Ave. Yuma, AZ 85365
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>
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>   ----- Original Message -----
>   From: Kurt Albershardt
>   To: RE-wrenches at topica.com
>   Sent: Thursday, March 29, 2007 10:25 AM
>   Subject: Re: Advise sought for large off grid PV system; 480 volt 3-phase [RE-wrenches]
>
>
>
>   --On Tuesday, March 27, 2007 8:59 PM +0000 larry crutcher <larry at starlightsolar.com> wrote:
>   >
>   > I am designing an off grid PV system and am looking for input and
>   > recommendations from experienced installers. Although I have years of
>   > building battery based systems, this is a big one. The customer has been
>   > running 60kW diesel generators 24/7 for about 2 decades. They want a PV
>   > system with batteries that will allow the generators to be shut down
>   > during the winter and low load periods. Summer loads can be above
>   > 500kWhs per day but winter drops to less than 100kWhs which I can do
>   > with PV's.
>
>   Are they using any of the waste heat from those gennies?
>
>   HIJC sells a very slick adsorption chiller which could prove useful.








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