The Gains of Geothermal Energy for Air Cooling
Friday, September 3rd, 2010
Geothermal energy is defined as the heat produced in the earths core since the planets origin. This energy stems from radioactive decay of several minerals below the earths crust and additionally from the solar power absorbed by the earth’s surface. The energy at present, is used in industries, commercial enterprises and even in homes for various functions and is considered ecologically practical as it uses minimum exhaustible resources of the earth. The thermal performance of this energy is also high as little or no energy conversion is required throughout its use.
Recently, geothermal power gains ground as it is being more and more utilized in heating and cooling of homes and offices. This process uses constant temperature of the earth to heat and cool properties and companies with 40-70% less energy than standard systems. While normal heating and cooling devices burn fuel or consume electricity, the geothermal energy makes use of a much lesser amount of electricity only to pump out heat from the earth and then directly utilize the heat energy for air heating or cooling.
Geothermal businesses offer ground source heat pumps, for air cooling and heating purposes, that extracts heat from ground or groundwater, thus lowering carbon dioxide emissions and electricity bills and increasing ecological sustainability.
Ground source heat pumps : Process
Air cooling and heating by ground source heat pumps is a method which is greatly in vogue in the developed countries and is achieving a certain level of use in developing nations also. The regular heat of the earth, at about 10 feet under the earths surface area, remains around 50F, which is utilized by these pumps for the function. Air or anti-freeze liquids are generally pumped via the pipes that are buried underground and are re-circulated in the household or office building. In summer, the air or the anti-freeze liquid in the pipes of the ground source pumps extract heat from the building and takes it under the ground through the pipes, therefore operating as air-coolers. Throughout winter, it draws the heat from underneath the earths surface and supplies warm air or water to the building.
The ground source heat pumps uses a closed loop principle of evaporation of water or liquid refrigerant (which boils at a lower temperature in comparison with water and therefore forms steam effectively), compression of the vapour formed and the subsequent condensation of the steam to water/liquid refrigerant for air cooling function.
Therefore, in a nutshell, geothermal energy is a noble way of power use in the contemporary world. The warrants of its use in the purpose of air cooling and heating are:
1. Geothermal energy, being a renewable source, can easily be used over and over again and therefore lessens the risk of power exhaustion in the long term.
2. Due to its sustainability and lesser degree of pollution (its use lowers carbon dioxide emissions in a huge way), geothermal energy is considered to be ecologically feasible source of power.
3. This source of energy is cost-effective and energy-efficient, making it dependable for future uses.
With a lot of distinct reasons, there’s no question of why geothermal power is growing in popularity.
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