[RE-wrenches] Tube solar collectors

[roger dixon]

We get some snow here in NJ, but it usually melts fairly quickly. Perhaps
that is some of the difference.

 

Roger Dixon

Certified Wind Site Assessor

Distributor & Installer of Solar & Wind Energy Systems 

Skylands Renewable Energy, LLC

908.337.2057 cell

908.730.6474 fax

roger.dixon at skylandsre.com

www.skylandsre.com

SkylandsRenewD66bR03dP01ZL

 

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From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Todd Cory
Sent: Monday, July 20, 2009 1:15 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Tube solar collectors

 

In snow country good old, simple, flat plate collectors do better then the
EV tubes. The snow slides off and melts faster... and unless you are trying
to make steam, the summer performance is about the same. IMO evacuated tube
units are an overly high tech product looking for an application.

Todd


roger dixon wrote: 

I have yet to see a flat plate collector outperform an EV tube setup.  With
EV tubes the angle of incidence is almost always at 90 degrees throughout
the course of the day and the sun's arc.  Except for very early in the
morning and very late in the afternoon, you always have the most/maximum
solar absorption - 90 degrees from the face of the collector.  Does anyone
have a different experience?
 
Roger Dixon
Certified Wind Site Assessor
Distributor & Installer of Solar & Wind Energy Systems 
Skylands Renewable Energy, LLC
908.337.2057 cell
908.730.6474 fax
roger.dixon at skylandsre.com
www.skylandsre.com
 
  





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