[RE-wrenches] Evacuated Tube-based SDHW

[Peter Parrish]

Back at the San Diego Solar 2008 show, I made a point to look at a number of
evacuated tube systems for SDHW. I got one very strong recommendation from a
Colorado-based installer I bumped into, and.I promptly put the information
into "write-only" memory. So here I am six months later no better off than I
was before I went to the show. 

 

Has there been a recent thread on evacuated tube SDHW systems? If so, how do
I access the archives? If not could we start a thread?

 

My principal reason for looking into this technology is for space-limited
applications. Right now we are looking at trying to find space on a crowded
roof for about 100-120 sq-ft of conventional flat plate collectors (e.g.
SunEarth Empire 4'x8' or 4'x10'), and skylights, parapet walls and a PV
array are getting in the way. Climate is southern California coastal.

 

Any help would be appreciated.

 

- Peter

Peter T. Parrish, Ph.D., President
California Solar Engineering, Inc.
820 Cynthia Ave., Los Angeles, CA 90065
Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885
CA Lic. 854779, NABCEP Cert. 031806-26
peter.parrish at calsolareng.com 

  _____  

From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Peter
Parrish
Sent: Wednesday, March 25, 2009 6:05 AM
To: 'RE-wrenches'
Subject: Re: [RE-wrenches] MPPT greater than 150V

 

Yes, as far as I know.

 

Apollo is supposed to have one in beta evaluation but we haven't been able
to obtain satisfactory information from them how product evaluation is
taking place and when the unit will be available as a product. We had an
application for which we wanted to use this new product and gave up on them
and their product.

 

- Peter

 

Peter T. Parrish, Ph.D., President
California Solar Engineering, Inc.
820 Cynthia Ave., Los Angeles, CA 90065
Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885
CA Lic. 854779, NABCEP Cert. 031806-26
peter.parrish at calsolareng.com 

  _____  

From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Carl Emerson
Sent: Tuesday, March 24, 2009 5:20 PM
To: 'RE-wrenches'
Subject: [RE-wrenches] MPPT greater than 150V

 

Hi there,

 

Can someone confirm that there is still no MPPT regulators available capable
of accepting array voltages greater than 150.

 

Thanks,

 

Carl Emerson

Free Power Ltd.

Auckland NZ

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