Thermal - PV and diff controller? [RE-wrenches]

[Todd Cory, Mt. Shasta Energy Services]

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Yep... relying on convection to drive the potable side of a heat 
exchanger results in poor heat transfer and miserable efficiency.

Todd


Conrad Geyser wrote:

>Hey Ian, Kurt, Todd, Geoff et all,
>
>Nice to hear those solar thermal topics.
>That Art-tec controller is a lot less $ than a Tek-Mar!  The Tek-Mar is
>really nice for versatility though.
>
>In my testing of solar thermosiphon HX, I found that the temperature
>differential needed to drive the domestic side of the HX was adding another
>30 degrees to the soar loop temperature and lowering the efficiency.
>Anybody else?
>
>cheers,
>Conrad Geyser
>Cotuit Solar
>  
>


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