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Re: GBlist: Batch water heating



Ron wrote
"A foil-faced, rigid insulated cover
over the glass for nightime is often used, sometimes hinged to fold down in
fron of the batch heater and provide extra reflectance of solar radiation."

I've used foil with a selective surface to cover a batch heater tank instead
of painting it.  The low-e greatly reduces the day and night time losses so
that insulated covers aren't too important.  Of course, the foil may not be
available anymore.  Real Goods would probably know.

Paloma makes variable firing demand hot water heaters that allow you to
control the temperature output. - Terry
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