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Search took 0.01 seconds. Search: Posts Made By: ELGo
Forum: Solar Heating 07-18-13, 11:35 PM
Replies: 70
Views: 61,470
Posted By ELGo
Interesting. Perhaps the outside sleeve could...

Interesting.
Perhaps the outside sleeve could be plastic, even if it is a poor heat exchanger ?
Forum: Solar Heating 07-17-13, 01:52 PM
Replies: 70
Views: 61,470
Posted By ELGo
AC, Sounds like you think I built that...

AC,

Sounds like you think I built that device -- I wish!
Just a nifty idea I found on the web.

The commercial heat recovery (HR) units that do measure recovery report 50-60% -- that was the...
Forum: Solar Heating 07-16-13, 07:46 AM
Replies: 70
Views: 61,470
Posted By ELGo
More than one problem may be in play. I read that...

More than one problem may be in play. I read that imprudent cost cutting in building the module was the problem, not the solar cells per se. So the electric connections end up having premature...
Forum: Solar Heating 07-16-13, 12:26 AM
Replies: 70
Views: 61,470
Posted By ELGo
One last comment about PV adventures ... I...

One last comment about PV adventures ...

I was much more gung ho about PV until I started reading about very premature PV panel death from the cheap Chinese manufacturers. I expect this to be a...
Forum: Solar Heating 07-15-13, 10:37 PM
Replies: 70
Views: 61,470
Posted By ELGo
@#25 I was curious about the $ arithmetic...

@#25

I was curious about the $ arithmetic ...

A gallon of heating oil has about 41 kWh. Assuming about a 60% burn efficiency for the boiler (is that about right ?),a gallon will supply 24.6 kWh...
Forum: Solar Heating 07-15-13, 11:48 AM
Replies: 70
Views: 61,470
Posted By ELGo
Thanks for the thread, Xringer. I do enjoy a...

Thanks for the thread, Xringer.
I do enjoy a novel idea :)

I calculated some time ago that my shower consumes about 20 kW while running, so ~ 1.2 kWh of DC PV a day is good for about 3.6 minutes...
Showing results 1 to 6 of 6

 
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