Hybrid Car – More Fun with Less Gas

DHW heater for college Rec Fitness center - Page 3

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Posted by Robert Scott on November 17, 2008, 12:49 pm

Concentrating collectors are great for generating very high temperatures, but
are not very cost-effective for generating typical DHW temperatures, especially
in the midwest where diffuse light though some cloud cover is so common.  In
that case a fixed flat-plate collector will give you much more heat per dollar
invested.  If they are low-mass, they will also be generating heat in 2-3

Robert Scott
Ypsilanti, Michigan

Posted by gary on November 20, 2008, 3:47 am
Hi Steve,
You might have a look at this system by Alan R:

And a bit more on one of his more recent systems:

These are nice simple, cheap, long lived, non-pressurized tank systems
with simple heat exchangers.
The systems serve multiunit apartment buildings with large hot water
demands -- similar to your needs.
This should lend some credence and track record to your proposal for a
simpler system  -- which I think is 100% on track.

You can also use large pipe coil heat exchangers of PEX, as I do:


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