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		BTU or British Thermal Unit		The amount of heat required to raise the temperature of one pound of water, one degree Fahrenheit.

		Closed Loop		An underground heat exchanger piping system usually of polyethylene or polybutylene designed to allow the extraction or rejection of heat to the earth by the circulation of fluid within the tubing.

		Coefficient of Performance (COP)		Heating capacity divided by electrical energy consumed. ( e.g.15 kW output / 4.5 kW input = COP of 3.3) The coefficient of performance of a heating system is the electrical ratio of the heat we get out divided by the heat we put in.

		Energy Efficiency Ratio (EER)		Cooling capacity in BTU/hr divided by electrical energy consumed in watts.

		Geothermal Energy		Heat energy stored in the earth's crust by the absorption of solar energy and by conduction with the earth's hot interior. This underground or underwater temperature source is used for the operation of a heating and cooling system - heat pump.

		Geothermal Heat Pump		A heat pump that uses the constant underground or underwater temperatures as supply.

		Ground Loop		A series of heat exchange pipes containing an antifreeze solution buried either vertically or horizontally in the earth.

		Ground Source		A heat pump that utilises the earth as its source of energy.

		Heat Exchanger		A component or components that transfer heat energy from one medium to another. For example heat could be transferred, in a geothermal heat pump system, from water-to-air or from water-to-water and visa versa.

		Heat Sink		The area or media to where heat is deposited. (For instance, inside the ground.)

		Heat Source		The area or media from which heat is removed. (water, air, etc.)

		KWh		Kilowatt-hours, an electrical term where 1 kWh equals the use of 1000 watts for one hour.

		Liquid-to-Liquid heat pump		A heat pump that absorbs heat from a liquid and distributes the energy in the form of hot water. (Generally called a Water to Water Heat pump)

		Mechanical Cooling		Conventional cooling provided by a compressor operated refrigeration device. Term can be interchanged with "active cooling".

		Open Loop		A system where water is pumped from a water well, pond, lake or other surface source for use in a heat pump.

		Refrigerant		A naturally occurring or man made liquid which absorbs and releases heat energy in a refrigeration device by changing phase from a liquid to a gas and visa versa in response to the influence of a refrigeration compressor.

		Seasonal Coefficient of Performance (SCOP)		The average COP over the entire heating season.
		Seasonal Energy Efficiency Ratio (SEER)		The average cooling efficiency over an entire cooling season.

		Split System		Split heat pumps are two (2) part refrigeration systems which have separate evaporator / air handler and compressor / condenser sections. Commonly employed in air-to-air systems where the condenser section is located outside the home while the evaporator / air handler is located inside the conditioned structure.

		Water-to-Water		A heat pump which extracts heat from water in one area and transfers the heat usually at a higher temperature to another body of water. E.g. Extracting heat from a 50° F. well and using it to heat domestic hot water at 120° F.

		Ton (of refrigeration) or TR		The amount of energy it takes to convert 2000 lbs. of water at 32° F. to ice at 32° F. during a 24 hour period. Calculation: 2000 lbs. (H2O) x 144 Btu/lb. = 288,000 Btu's in 24 Hrs. Divide by 24 hrs = 12,000 Btu/hr. Therefore a "ton" of cooling is a measure of heat energy which is roughly equivalent to 12,000 BTU's.

The Savings Calculator is an approximation based on our experience to date and uses Conventional Central Air-conditioning as the benchmark for comparison. The Savings Calculator should be used as an indicator only. Geothermal India is able to calculate specific and accurate savings for each and every project after in-depth analysis of your proposed installation.
Contact us now to find out how much we can save for you!