Coefficient of Performance. Measurement of the steady-state performance of electrically operated systems, including ground-source heat pumps. It is the ratio of useful-energy output to purchased-energy input. Can also refer to gas-fired systems.
The ratio of heating or cooling provided by a heat pump (or other refrigeration machine) to the energy consumed by the system under designated operating conditions. The higher the COP, the more efficient the system.
See Chapter 12, Efficiency Ratings, for more information.
COEFFICIENT OF PERFORMANCE. A ratio of the work or useful energy output of a system versus the amount of work or energy inputted into the system as determined by using the same energy equivalents for energy in and out. Is used as a measure of the steady state performance or energy efficiency of heating, cooling, and refrigeration appliances. The COP is equal to the Energy Efficiency Ratio (EER) divided by 3.41(2) The higher the COP, the more efficient the device.
Ratio of work performed or accomplished as compared to the energy used.
Computational Optimization Processor; processor that assimilates exposure and risk scenario as contained in Site Definition Files and establishes, based on specific rules, a modified scenario that is technically complete and computationally efficient.
Coefficient of Performance. The ratio of total useful work output by a machine to the net energy input. Units must be consistent.
Refers to the cooling efficiency of an air conditioner. The higher the COP, the more energy-efficient the unit.
This is a measure of the energy efficiency of a chiller.
Coefficient of Performance. 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.
Coefficient of Performance. A measure of the performance of a heat pump. It is defined as the amount of heat the pump moves, divided by the energy it took to run the pump. COP's can range from 1 to 10 or higher.
Coefficient of Performance. The ratio of the rate of heat removal to the rate of energy input, in consistent units, for a complete refrigeration system or some specific portion of that system under designated operating conditions.
Coefficient of Performance of a heat pump means the ratio of the rate of useful heat output delivered by the complete heat pump unit (exclusive of supplementary heating) to the corresponding rate of energy input, in consistent units and under operating conditions.
the coefficient of performance, used to determine how efficiently a heat pump operates. It is now common for modern systems to exceed 3 to 1, whereby for every 1kw of electrical power used by the unit 3kw of heat will be provided. Latest systems can exceed 4 to 1, but note that the COP is related to external and internal temperatures.
The Coefficient of Performance rates a heat pump's ability to efficiently use electricity in its operation. The Air Conditioning and Refrigeration Institute provides the Coefficient of Performance at 47 degrees Fahrenheit and 17 degrees Fahrenheit. This is because a heat pump is more efficient at higher, outside-air temperatures.
COP compares the heating capacity of a heat pump to the amount of electricity required to operate the heat pump in the heating mode. COPs vary with the outside temperature: as the temperature falls, the COP falls also, since the heat pump is less efficient at lower temperatures. ARI standards compare equipment at two temperatures, 47 F and 17 F, to give you an idea of the COP in both mild and colder temperatures. Geothermal equipment is compared at 32 F enter water temperature. COP & HSPF can not be compared equally. Air Source Equipment is rated by HSPF or COP and Geothermal equipment is rated by COP.
Coefficient of performance: a measure of refrigeration cycle efficiency; defined as useful refrigeration output in kW divided by the electrical input in kW
(coefficient of performance): a measurement of a heat pump's efficiency (in the heating mode) at a specific outdoor temperature - usually 47°F. A COP of 1 indicates that for each unit of energy being used, an equal amount of energy, in the form of heat) is being provided by the system. A heat pump with a COP of 3 would provide three times as much energy in heat as it consumes in electricity at an outdoor temperature of 47°F. COP is also sometimes used to measure the single temperature cooling efficiency of chillers.
COEFFICIENT OF PERFORMANCE. The ratio of work or energy applied as compared to the energy used.
(coefficient of performance). A measure of the efficiency of any heating unit--arrived at by dividing its output in BTUs by its input in BTUs.
Coefficient of Performance. The ratio of usable output energy divided by input energy.