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dave333
on Aug 11, 2021
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The Ancient Persian way to keep cool
A better way to both heat and cool a building passively is the Skytherm Roof:
https://www.google.com/search?rlz=1C1GIGM_enUS553US553&sxsrf...
https://www.architectmagazine.com/technology/harold-hay-skyt...
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