Glossary of terms used on this site
There are 67 entries in this glossary.All
| Term | Definition |
|---|---|
| Active Cooling |
Compressor driven air-conditioning. |
| Amps |
Current (back up excluded). |
| Aquifer |
A large body of underground water. |
| BTU - British Thermal Unit |
The amount of heat required to raise the temperature of one pound of water, one degree Fahrenheit. |
| CFM |
Cubic feet per minute of air flow. |
| Check Valve |
A check valve is a mechanical device normally applied to a piping system which allows fluid to flow in only one direction. |
| 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. |
| Comp.-Wats |
Compressor electricity consumption. |
| Compressor |
Refrigeration component which increases the density, temperature and pressure of entering refrigerant through compression and discharges a hot dense gas. |
| Cond. |
Freon temperature on condenser side. |
| Condenser |
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. |
| Cupro-nickel |
90% copper / 10% nickel alloy which has high corrosion resistance to water containing salt, sulphur, chlorides and other dissolved minerals. |
| Degree Day |
The number of degrees that the mean temperature for that day is below 65° F. (e.g. mean temp. of 40°F for the day--65-40=25 degree days). |
| Delta T. |
Difference in-between LWT and EWT. |
