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Old 06-16-12, 11:35 AM   #3
Geo NR Gee
Journeyman EcoRenovator
 
Join Date: Jan 2011
Location: Seattle
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It would be intersting to know how much of a storage tank you would require in order to heat the greenhouse in the coldest winter days.

My friend has a large greenhouse business and grows only part of the year. He said that he needs to always maintain about 70F in order for his plants to grow healthy. He grows strawberries, squash, tomatoes and some other vegtables. He said his major expense is heating.

After I explained about the ground source heat, his interest became apparent and wants to know more. But the idea of using evacuated tube solar heating and storage tanks may be less expensive?

Geo
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