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A comment on The Zen of Passive Solar Heating Panel Design (2010). Parent comment

Re:The Zen of Passive Solar Heating Panel Design (2010) by pinko on Sunday September 18, 2016 @07:34PM (#12527780)
Not always sufficient!

http://c8.alamy.com/comp/D0DG83/stop-sign-covered-in-snow-du...

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Re:The Zen of Passive Solar Heating Panel Design (2010) by redtexture on Tuesday September 20, 2016 @07:24PM (#12544214)
Not an insulated capture point. Backside of the example metal sign always cooled on backside by low temperature air.
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