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Old 06-02-2009, 12:49 AM
Eskimo Eskimo is offline
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Join Date: May 2004
Location: Florida Big Bend region
Posts: 721
Quote:
Originally Posted by Brian Carlton View Post
No statement of differential in that article..........which is critical to the efficiency...........they could easily assume a 40° differential for the sake of a much better efficiency figure.
Applied Energy Recovery Systems shows some data sheets that include graphs of their (claimed) coefficient of performance as a function of final tank temperature, with curves for different ambient temperatures. Here's the data sheet for one of their residential units.

I read that AERS was acquired by A. O. Smith not that long ago.
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