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Geothermal units are similar to ordinary heat pumps, but use the solar energy stored just below our feet to provide heating, air conditioning and hot water. The earth acts as a giant solar panel, absorbing roughly half of the sun’s heat energy. A series of pipes called a “loop” is buried just below the frost line to tap into that stored energy. In the winter, heat is brought in through the loop, concentrated, and delivered throughout the home. During summer, the excess heat is removed and delivered back to the earth, completing the cycle. Because geothermal units use the earth’s natural heat, they are among the most efficient and comfortable heating and cooling technologies currently available. In this all day seminar we will explore a brief history of geothermal heat pumps and compare high temperature geothermal versus low temperature geothermal. The refrigeration cycle as applied to air conditioners will be explained, and then applied to geothermal heat pumps.
The various types of loop systems (open, closed, pond), vertical systems, horizontal systems and horizontal bore systems will be covered. System design, construction and piping requirements will also be shown. This seminar is a must for HVAC or heating contractors looking to get into this emerging field.