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Forum: Geothermal & Heat Pumps 07-09-16, 10:09 PM
Replies: 27
Views: 19,431
Posted By jeff5may
COP: coefficient of performance. A measurement of...

COP: coefficient of performance. A measurement of heat moved divided by power consumed. Watts / watts. Higher is better. Most manufacturers use weighed (seasonally adjusted) measurements for...
Forum: Geothermal & Heat Pumps 07-08-16, 10:32 PM
Replies: 27
Views: 19,431
Posted By mejunkhound
Had to look up what a WA AUS unit was for gas,...

Had to look up what a WA AUS unit was for gas, elec unit is the kw-hr.

Gas unit is 3.6 megajoules = 1 kw-hr (0.034 therms) 1$ US = 1.3 $ AUS

3.6 megajoule number comes from,
.278*3.6 MJ =...
Forum: Geothermal & Heat Pumps 07-05-16, 11:20 PM
Replies: 27
Views: 19,431
Posted By jeff5may
Read this: What is a Desuperheater or Hot Water...

Read this:
What is a Desuperheater or Hot Water Generator? (http://www.geojerry.com/desuperheater.html)

Whether to run thermal or pv solar collectors or arrays (or both) is a big decision that...
Forum: Geothermal & Heat Pumps 06-30-16, 10:30 PM
Replies: 1,943
Views: 4,684,669
Posted By AC_Hacker
Regarding the expense of the books, you ...

Regarding the expense of the books, you probably have a rough idea how much you are going to spend on your house. If you divide the cost of the books (yes you can find a way to ship them to...
Forum: Geothermal & Heat Pumps 06-26-16, 12:16 PM
Replies: 1,943
Views: 4,684,669
Posted By AC_Hacker
This is helpful information. I did find a...

This is helpful information.

I did find a Google Map of your location...
Forum: Solar Power 06-07-16, 08:40 AM
Replies: 58
Views: 27,618
Posted By stevehull
Memphis, Here is the way to test your meter....

Memphis,

Here is the way to test your meter. You hook up your panels. I think you said they were 800 watts total with microinverters. I don't like the eBay inverters as they simply do not last....
Forum: Solar Power 06-07-16, 08:25 AM
Replies: 58
Views: 27,618
Posted By jeff5may
Ok, the theory goes like this: say you connect a...

Ok, the theory goes like this: say you connect a 250 watt panel up to your eBay inverter. You then connect the eBay inverter to a wall receptacle with a standard lamp cord (3 pin wired correctly)....
Forum: Geothermal & Heat Pumps 03-30-09, 09:11 AM
Replies: 1,943
Views: 4,684,669
Posted By AC_Hacker
The Homemade Heat Pump Manifesto

Hello all,



(I have been working on this project since 2009, and I am having great success and fun, but have yet to find anyone on the web doing similar work.)

* * *

I live in an older...
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