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Forum: Geothermal & Heat Pumps

03-23-12, 03:16 PM

Replies: 1,943

The Homemade Heat Pump Manifesto

Views: 4,657,518

Posted By mrd

It's not really a paradox; There are various...

It's not really a paradox; There are various ways to improve efficiency of a system, each with an up-front differential cost and a recurring savings. A cost-conscious consumer will determine how...

Forum: Geothermal & Heat Pumps

06-23-11, 07:55 AM

Replies: 1,943

The Homemade Heat Pump Manifesto

Views: 4,657,518

Posted By mrd

Dewpoint depends on temperature and humidity, see...

Dewpoint depends on temperature and humidity, see Dew Point Calculator (http://www.dpcalc.org/).

I've read that humidity sensors tend to be inaccurate, so if you were to utilize a combination of...

Forum: Geothermal & Heat Pumps

03-09-11, 06:09 AM

Replies: 1,943

The Homemade Heat Pump Manifesto

Views: 4,657,518

Posted By mrd

It looks like a pressure control similar to what...

It looks like a pressure control similar to what piddler linked to is in the control panel for a huge system shown in this video. YouTube - Control Panel From Large Semi-Hermetic Refrigerant...

Forum: Geothermal & Heat Pumps

05-04-10, 05:28 PM

Replies: 1,943

The Homemade Heat Pump Manifesto

Views: 4,657,518

Posted By mrd

otti, water will hold more heat than soil, per...

otti, water will hold more heat than soil, per equal volume, water is more heat conductive, and water will have convection currents. This will allow your heat pump to extract a given amount of heat...

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