waste solar thermal heat [RE-wrenches]

[Todd Cory, Mt. Shasta Energy Services]

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Wrenches,

I am getting about 7000 btu's per hour of waste heat per hour off the
solar thermal system now that summer is here. That 7000 ÷ 3413 (kWh)/BTU
yields some 2 kW/hour. In a 5 hour solar day that is some 10 kWh per day
that is being wasted. When I think of how hard our PV system works to
make 24 kWh a month, this wasted energy representing ~300 kWh a month
looks pretty sweet.

Does anyone know of any kinds of devices that could generate electrical
energy off waste thermal energy? I know some geothermal installations
use freon based generators since the gas boils at a low enough
temperature to run a mechanical generator. These are probably multi
megawatt units... I curious if anyone makes much smaller units?

Just wondering about how to capture more waste from our home system.

Todd
--
Todd Cory
KE6SXS
toddcory at finestplanet.com
Mt. Shasta Energy Services
License C-10 # 811428
P.O. Box 689
Mt. Shasta, CA. 96067
(530) 926-1079

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