Geothermal Heat Pump

 The fundamental behind the functions of geothermal heat pump is the constant temperature of the earth. The temperature that is maintained at the shallow ground or the upper 10 feet above the ground is warmer during the winter and cooler during the summers than the air outside. The three main components of a geothermal heat pump are the ground heat exchanges, the heat pump and the air delivery system or the duct work. The heat exchange is a system of pipes called the loop and they are buried into the shallow ground near the building. A fluid which is water or a mixture of water and antifreeze circulates through the pipes to absorb or relinquish heat as the requirement may be.

 Heat pumps works more or less like refrigerators that makes a cool place that is the inside of a refrigerator cooler by transferring heat to the surrounding area thus making the surrounding area warmer. During the winter months the heat pump removes heat from the heat exchanges and pumps it into the indoor air delivery system. This way the heat from the ground moves to the interior of the house. However, during summer the entire process is reversed. The heat pump then moves heat from the heat exchange. As a result the heat from inside the building moves into the ground. The heat that is removed from inside the homes during summers can be used to heat water if there is a free source of water available.

 The best thing about geothermal heat pumps is that they use lesser energy when compared to other forms of conventional heating and cooling. At the same time they do not cause pollution like many other sources of heating and cooling. This is because geothermal heat pumps use heat from the ground.

 Geothermal heat pumps can be categorized to have either closed or open loops and these loops can be installed in three different ways. They are horizontal, vertical or in ponds or lakes. The kind of installation that would be suitable depends on factors like availability of land, the soil and the rock type. In fact, if you carry out the installation keeping all these factors in mind you will be able to get the most economical deal.

 The closed loops can be water based or refrigerant based. For the water-based ones the water or the anti-freeze solution is circulated through the plastic pipes that is buried into the ground. The refrigerant based relies on refrigerant that flows directly from the copper tube that is buried into the ground. On the other hand open loops can be installed where there is adequate availability of water and also an open discharge is available.

 It must be noted here that installation of geothermal heat pumps cannot be done without the intervention of an expert professional, so it is always a good idea to get in touch with an expert. The cost of installation mainly depends on the type of loop that will be installed that is vertical or horizontal. A geothermal heat pump has a life as long as 18 to 23 years.

 

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