SK Services
The Countries Leaders in UFH
& Geothermal Heating Systems
16, Dublin Rd.
Kilkenny.
TEL 056~7723324
FAX 056~7723809
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British Thermal Unit:The amount of heat required to raise the temperature of one pound of water, one degree Farenheit.
Heating capacity divided by electrical energy consumed.( e.g.16 kW output / 4 kW input = COP of 4) The coefficient of performance of a heating system is the electrical ratio of the heat we get out divided by the energy we put in.
The heat rejecting mechanism in a heat pump usually in the form of a refrigerant-to-air coil or a refrigerant-to-water coil. Refrigeration heat exchanger where the refrigerant gives up its heat during condensation from a vapor to a liquid. It is at the condenser that water is heated for use in your home/premises.
Refrigeration component which increases the density, temperature and pressure of entering refrigerant through compression and discharges a hot dense gas.
An underground heat exchanger piping system usually of polyethelene or polybutylene designed to allow the extraction or rejection of heat to the earth by the circulation of fluid within the tubing.
A heat exchanger and pump system which removes a small portion of heat from the compressor discharge gas and typically transfers it to a domestic hot water tank. We do not recommend desuperheaters as they are inefficient.
A geothermal heat pump system i which the liquid refrigerant is sent directly out into coils buried in the ground where it is vaporized or condensed by contact with the earth. These use comparatively large quantities of ozone damaging refrigerants in comparatively risky conditions and are no more efficient than an indirect expansion heat pump.
Back to Top.In simple terms, energy is the ability to do work (e.g., move an object against friction or gravity, heat it up, etc.). It can be neither created nor destroyed, but it can be transformed (see Conservation of Energy, below). For example, a car turns the chemical energy of gasoline into the mechanical energy of the moving car, and uses an alternator to turn some of this mechanical energy into the electrical energy that powers the car's lights and radio. Energy is measured in kilowatt-hours (kWh) or in kilowatt-seconds (kWs), which are also known as kilojoules (kJ).
Power is simply the rate at which energy is generated (i.e., gathered or converted into a useful form by a power plant, reactor or engine) or consumed. The car mentioned above might have an engine that generates a certain amount of power, meaning it provides a certain quantity of energy each second. It may also have a radio that requires a certain amount of power, meaning it consumes a certain quantity of energy every second. Power is measured in kilowatts (kW), equal to one kilowatt-second of energy being produced or consumed per second.
Energy can be stored in batteries and power cells, and it is proper to speak of these things as "containing" and "storing" energy. Likewise, each "shot" from an energy weapon and each "use" of a gadget requires a certain amount of energy. Power, on the other hand, cannot be stored; power is only really meaningful when speaking of the output of a power plant of some kind (engine, nuclear reactor, etc.), or when referring to the rate of energy consumption of a gadget that operates continuously
Back to Top.Tradename for a series of man made chemicals or refrigerants used in refrigeration systems. Each refrigerant is designed to change phase (turn from liquid to gas or vice-versa) at specific temperatures & pressures which will produce the desired cooling effect required for a specific job. The refrigerant absorbs energy as it evaporates (turns to gas and releases energy during condensation (turning to liquid).
Back to Top.A series of heat exchange pipes containing an antifreeze solution which are buried either vertically or horizontally in the earth.
The area or media from which heat is removed.
Killowatt hours: Electrical/energ measurement - 1 Kwh equals the use of 1000 watts for one hour. To convert Kwh to BTU multiply by 0.0002928.
A heat pump which absorbs heat from a liquid and distributes the energy in the form of hot forced air.
A heat pump which absorbs heat from a liquid and distributes the energy in the form of hot water.
Back to Top.A system where water is pumped from a water well, pond, lake or other surface source for use in a heat pump.
A heat pump which has all components (compressor, blower and heat exchangers etc.) in one cabinet.
A naturally occuring or man made liquid which absorbs and releases heat energy in a refrigeration device by changing phase from a liquid to a gas and vise versa in response to the influence of a refrigeration compressor.
A heat pump in which the condenser and evaporator coils of the unit reverse roles in response to a reverse in the direction of the flow of refrigerant in the machine.
Is the average COP over the entire heating season.
Subtract the installation cost of the least expensive (less efficient?) system from the installation cost of the more expensive but more efficient Heat Pump. This value is the increased cost of installing the more efficient system. Calculate the yearly energy savings in Euros by installing the more efficient system. Take the increased cost to install divided by the yearly energy savings and your result is the number of years required for the more efficient system to pay for itself.
This is the temperature of the media (water or air) from which the heat pump extracts its heat.