Comments on: Concealed Solar Hot Water http://greenbuildingelements.com/2007/07/04/concealed-solar-hot-water/ Reporting on Sustainably Built Environments from Bricks to Cities Fri, 03 Feb 2012 01:57:22 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: collectors http://greenbuildingelements.com/2007/07/04/concealed-solar-hot-water/comment-page-1/#comment-128649 collectors Sat, 19 Mar 2011 07:48:00 +0000 http://philipproefrock.greenoptions.com/2007/07/04/concealed-solar-hot-water/#comment-128649 The efficiency of a solar collector is defined as the quotient of usable thermal energy versus received solar energy. Besides thermal loss there alwas is optical loss as well. The conversion factor or optical efficiency indicates the percentage of the solar rays penetrating the transparent cover of the collector (transmission) and the percentage being absorbed. Basically, it is the product of the rate of transmission of the cover and the absorption rate of the absorber. The efficiency of a solar collector is defined as the quotient of usable thermal energy versus received solar energy. Besides thermal loss there alwas is optical loss as well. The conversion factor or optical efficiency indicates the percentage of the solar rays penetrating the transparent cover of the collector (transmission) and the percentage being absorbed. Basically, it is the product of the rate of transmission of the cover and the absorption rate of the absorber.

]]> By: George http://greenbuildingelements.com/2007/07/04/concealed-solar-hot-water/comment-page-1/#comment-38722 George Tue, 02 Jun 2009 23:03:01 +0000 http://philipproefrock.greenoptions.com/2007/07/04/concealed-solar-hot-water/#comment-38722 I have some leftover pex tubing from a radinat floor installation last year. You gave me the inspiration to try a loop in the attic! I have some leftover pex tubing from a radinat floor installation last year. You gave me the inspiration to try a loop in the attic!

]]> By: George http://greenbuildingelements.com/2007/07/04/concealed-solar-hot-water/comment-page-1/#comment-97570 George Tue, 02 Jun 2009 23:03:00 +0000 http://philipproefrock.greenoptions.com/2007/07/04/concealed-solar-hot-water/#comment-97570 I have some leftover pex tubing from a radinat floor installation last year. You gave me the inspiration to try a loop in the attic! I have some leftover pex tubing from a radinat floor installation last year. You gave me the inspiration to try a loop in the attic!

]]> By: Joe Wolf http://greenbuildingelements.com/2007/07/04/concealed-solar-hot-water/comment-page-1/#comment-17569 Joe Wolf Wed, 10 Dec 2008 04:03:07 +0000 http://philipproefrock.greenoptions.com/2007/07/04/concealed-solar-hot-water/#comment-17569 I posted a question on the This Old house blog last year asking about this subject. I did not get any responses worth while. Glad to see this posting. I live in sunny California, we live in an historic house with a dark roof, the attic is well over 100 degrees about 7 or 8 months of the year. The idea sure makes sense to me. I am planning to insulate the attic and am thinking that putting in PEX between the rafters should be an inexpensive solar heater. I wonder if I need a solar water storage tank or just use it to pre heat before the water heater. I posted a question on the This Old house blog last year asking about this subject. I did not get any responses worth while. Glad to see this posting.

I live in sunny California, we live in an historic house with a dark roof, the attic is well over 100 degrees about 7 or 8 months of the year. The idea sure makes sense to me. I am planning to insulate the attic and am thinking that putting in PEX between the rafters should be an inexpensive solar heater.

I wonder if I need a solar water storage tank or just use it to pre heat before the water heater.

]]> By: Joe Wolf http://greenbuildingelements.com/2007/07/04/concealed-solar-hot-water/comment-page-1/#comment-97569 Joe Wolf Wed, 10 Dec 2008 04:03:00 +0000 http://philipproefrock.greenoptions.com/2007/07/04/concealed-solar-hot-water/#comment-97569 I posted a question on the This Old house blog last year asking about this subject. I did not get any responses worth while. Glad to see this posting. I live in sunny California, we live in an historic house with a dark roof, the attic is well over 100 degrees about 7 or 8 months of the year. The idea sure makes sense to me. I am planning to insulate the attic and am thinking that putting in PEX between the rafters should be an inexpensive solar heater. I wonder if I need a solar water storage tank or just use it to pre heat before the water heater. I posted a question on the This Old house blog last year asking about this subject. I did not get any responses worth while. Glad to see this posting.

I live in sunny California, we live in an historic house with a dark roof, the attic is well over 100 degrees about 7 or 8 months of the year. The idea sure makes sense to me. I am planning to insulate the attic and am thinking that putting in PEX between the rafters should be an inexpensive solar heater.

I wonder if I need a solar water storage tank or just use it to pre heat before the water heater.

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