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i <br /># V <br />OPERATION OF THE TETCO ' <br />HEAT EXTRACTOR <br />The TETCO Heat Extractor absorbs low-grade energy in the form of heat from well wait?* mo cnanges tn.* Ic w- jia.jr <br />energy into usable high temperature heat for domestic heating purposes <br />Step 1 — Water, supplied by a well or other suitable source, flows through tubes located inside a water to refrigerant heat <br />exchanger. Surrounding the water tubes is a second container, filled with extremely cold refrigerant This cold <br />refrigerant absorbs heat from the water, lowering the water temperature to within several degrees of the freezing point. <br />Step 2—The refrigerant, which has now acquiree! a considerable amount of heat from the water, enters the compressor <br />where is it pressurized to approximately 245 pounds per square inch, increasing its temperature to approximately 18t' <br />degrees Fahrenheit. <br />Step 3—The hot refrigerant circulates through a refrigerant to air heat exchanger. Air. circulated by a blower unit. ij> <br />heated as it flows past the refrigerant to air heat exchanger and is then distributed throughout the home As the hot <br />refrigerant flows through the refrigerant to air heat exchanger, it cools and condenses to a liquid state. <br />Step 4 —The expansion device (capillary tube) acts as a refrigerant flow restrictor. As the liquid refrigerant leaves the <br />capillary tube, its temperature and pressure arc reduced to approxin.^'tly 32 degrees Fahrenheit and 57 pounds per <br />square inch. The cold refrigerant now enters the water to refrigerant heat exchanger and the process repeats itself in a <br />continuous cycle. <br />■«. <br />•>.