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.di...@skylandsre.com www.skylandsre.com SkylandsRenewD66bR03dP01ZL Note: The information contained in this communication is confidential, may be attorney-client privileged, may constitute inside information, and is intended only for the use of the addressee(s). It is the property of the sender of this e-mail. If you receive this e-mail in error, do not review, disseminate, or copy it. Unauthorized use, disclosure, or copying of this communication or any part thereof is strictly prohibited and may be unlawful. If you have received this communication in error, please notify the sender immediately by return e-mail and destroy this communication and all copies thereof, including all attachments. From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@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.di...@skylandsre.com www.skylandsre.com
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