Well Water used for Air and Heat at Home

Learn how Willard McFayden heats and cools his home with 60 degree Fahrenheit well water.

| March/April 1977

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    The idea of using cool water to heat a house may seem somewhat strange to most of us. But that's exactly what Willard McFayden of Ellerbe, North Carolina has been doing-and doing quite successfully for years.
    PHOTO: MOTHER EARTH NEWS STAFF
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    A layout of how McFaden's well water heat pump system works.
    MOTHER EARTH NEWS STAFF

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Heat From 60 degree Fahrenheit Water?

Yes, and plenty of it! There's usable and extractable heat, in fact, in any water ... right down to the point (32 degrees Fahrenheit) that it becomes ice.

(For that matter, you can use both ice and water to maintain a comfortable living temperature in a structure. The Oak Ridge National Laboratory in Tennessee, for instance, has experimented for the past few years with an "Annual Cycle Energy System" which warms a building during the winter by freezing water into ice ... and then cools the structure in the summer by melting the same ice back into water.)

In McFayden's case, the 60 degree well water that he taps is far more than adequate for his purposes for two reasons: Willard has at least a 10 degree temperature margin working in his favor, since his system was designed to operate quite effectively day in and day out with an input of 50 degree water, and McFayden's well is capable of delivering a constant flow of 50 gallons of water a minute ... while his heating setup needs only eight gallons a minute and needs those eight gallons only sporadically as his home's regulating thermostat turns the system on and off.

The Secret of the System Is a Heat Pump

Willard McFayden accomplishes the seemingly impossible trick of warming his house with cool water through the use of a water-to-air heat pump.



The heat pump that Willard uses looks a great deal like an ordinary electric furnace and requires about as much attention. The big difference between the two units only becomes apparent at the end of the month when the power bill comes in.

McFayden has religiously saved all his utility stubs and can show you that the average monthly bill (summer and winter) during 1976 for his all-electric 1,700-square-foot house — charged at the rate of 3.5 cents per kilowatt hour — was just $47.22. Willard is quick to point out that this is about 20% less than the monthly power bills paid by his brother, Robert ... who lives right across the road in a very similar all-electric house heated by an air-to-air heat pump. And Robert's electric bills, in turn, are far lower than those of other folks in the area who live in still other all-electric homes that use no heat pumps at all.

AlastairArchie
5/16/2014 11:05:02 PM

The home and office cooling systems that are based upon well-water and floor cooling do not work well for longer duration. Particularly, in desert areas, they cannot fulfill the needs of residences. That's why http://creightonlaircey.net/ and keeping the AC running is the best way to cooling.







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