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

[Ian Woofenden, Home Power]

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Related topics:

We just installed a March pump in a PV-direct SDHW system here, and 
it's quite noisy (inside house in an open loft with the tank). I'm 
going to try an El-Sid pump instead. Any feedback on noise? Choice of 
pumps? Noise suppression?

I'm just about to test a new DC control for PV-direct systems. See 
http://www.arttec.net/dtc/. This should improve system efficiency by 
avoiding pumping when the collector is colder than the tank.

Best,

Ian

-- 

Ian Woofenden <ian.woofenden at homepower.com>, Senior Editor
Home Power magazine; Subscriptions: $22.50 per year, PO Box 520, 
Ashland, OR 97520 USA
800-707-6585 (US), 541-512-0220, or download free sample issue at 
<http://www.homepower.com>


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