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GaryGary · 06-12-11, 10:05 PM

Hi,
One thing to think about on this design is to what extent a parabolic reflector will focus energy on the copper tube as the sun moves over the collector during the day. Generally, parabolic reflectors have to be tracked to keep there focus on a small receiver (the tube). As in George's collector: George's Workshop Solar

There are CPC (Compound Parabolic Concentrator) reflectors that will concentrate heat on a receiver for a longer period without tracking -- if you Google CPC reflectors there is a lot out there on them.

Gary

06-12-11, 10:05 PM	#7
GaryGary Apprentice EcoRenovator Join Date: Nov 2008 Location: SW Montana Posts: 139 Thanks: 1 Thanked 21 Times in 15 Posts	Hi, One thing to think about on this design is to what extent a parabolic reflector will focus energy on the copper tube as the sun moves over the collector during the day. Generally, parabolic reflectors have to be tracked to keep there focus on a small receiver (the tube). As in George's collector: George's Workshop Solar There are CPC (Compound Parabolic Concentrator) reflectors that will concentrate heat on a receiver for a longer period without tracking -- if you Google CPC reflectors there is a lot out there on them. Gary