Solar DHW

9 Posts
Aug 31, 2009 04:26 pm
Solar DHW

Looking for input on solar flat plate vs evacuated tube collectors in New England...any info appreciated with regard to efficiency, operating in cold climate, durability, etc.

Thx...

BF
 
578 Posts
Aug 31, 2009 04:53 pm
Re: Solar DHW

home power issue 132, was the cover story, flat plates v evac tubes.

james
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462 Posts
Sep 2, 2009 11:10 am
Re: Solar DHW

Bruce, also check out this site, www.solarishot.com, it has a real time output comparison of the two types of systems...I normally suggest flat plate panels over evacuated tubes. Evacs can lose their vaccuum over time, replacement tubes may not exist for certain models over time, volume of heated water is less, repairs can be an issue, total area vs. collector area is usually less, it adds a second heat exchanger to the equation....But I am sure you will find many arguements that support evacs. I think the forementioned site settles a lot of diputes for operation parameters, so maintenence becomes the big issue in my mind.....
 

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