Interesting Articles

A Geothermal Heat Pump (GHP) is an apparatus that extracts heat from below the surface of earth. It works on the principle that heat flows from higher temperature substances to lower temperature substances via conduction or via convection (air currents). Geothermal Heat Pumps take in heat from the earth or water bodies to provide space and water heating. This works since the earth traps nearly half the sun's energy that is received by the earth.

Ground source heating and cooling will give great comfort and be cost-effective with environmentally-friendly technology which uses our planet's ability to store energy as heat. Geothermal heat pump systems move the heat from Earth or from water into buildings, or from buildings right back into Earth. A little bit of electricity is employed for operating fans, pumps, controls, and a little compressor.

Geothermal heat pumps (GHPs) are among the most efficient and comfortable heating and cooling technologies currently available for homes and other buildings. These ground-source heat pumps use the natural heat storage capacity of the earth or ground water to provide energy efficient heating and cooling. Most GHPs are installed with "Desuperheaters" which collect waste heat from the compressor and use it to pre-heat domestic hot water for free. This is a new money-saving technology for homes.

Although the initial cost of a new geothermal system is generally more expensive than a traditional heating and cooling system, the extra investment is returned within five to ten years. The ground loop piping is estimated to last over fifty years, and even the internal parts have about a 25 year life span. Every year about 50,000 new geothermal heating systems are added in the United States. They're very reasonable for most areas and can use the Earth for heating when temperatures drop and as a heat sink when it's hot outside.

Quite a number of new residential systems come with desuperheaters, by which excess heat is transferred to the home's hot water storage tank from the geothermal heat pump's compressor, providing a highly efficient means of heating water. But in the spring and autumn, during which the geothermal heat pump system does not operate, the desuperheater will not provide hot water. However, because of the geothermal system's significant advantage in efficiency compared to other water heating methods, 'full demand' systems using a separate heat exchanger to meet hot water needs cost-effectively are now being offered by some manufacturers.