Geothermal system for house air conditioning

Do you know how much power is utilized for the working of the air conditioning system in your houses?It is a huge load.The power used for these purposes is more of coming from the non renewable sources of energy.So how is  the plan of setting up a air conditioning system with the support of earth's energy.Yes the earth's energy is what is called geothermal energy one of the most important renewable sources of energy.It is actually easily affordable for the common man to install a geothermal ground source heat pump(it is also called so).More than that one can avoid using the fossil fuel which is costlier to get a more clean green fuel.

Two ground-source heat pump units stacked on top of each other. Heat is extracted or added to water which is pumped undergound.

Strictly speaking, what's often called a "geothermal system" is a misnomer because it implies tapping the heat in the Earth, something already done at large scale to supply electricity to utilities. This geothermal energy--and its offshoot enhanced geothermal--works only works in certain geographies and uses different technology.Rather than use underground heat, geothermal heat pumps attached to buildings capitalize on the steady temperature of the ground or deep water wells. In effect, they treat the Earth like a giant energy savings bank, depositing or withdrawing heat depending on the time of year.

The pump room at an apartment building in Fitchburg, Massachusetts.

During the summer, the systems pump indoor heat to underground and draw on the lower temperatures of the Earth to cool a building. In colder months, the same process works in reverse order where the heat from the ground being used to warm indoor air in the building.

Indoors are box-shaped heat pumps that pull and and push either water or a working fluid, such as antifreeze, in and out of the ground. Using the same compressor loop mechanism that a refrigerator has, a heat exchanger draws energy from the circulating liquid to either heat or cool a building.

In actual calculations geothermal system uses only 25 to 50 % less electricity than the conventional way of air conditioning.Also the amintenance cost of the system is nearly half of that of conventional method.Under the recently passed federal there is renewable soourdes of energy incentives of $2000 per year credit.The only disadvantage of the geothermal system is that its initial capital is little expensive that it comes about the double charge as that of the conventional heating and cooling.