Heat pump efficiency is measured by COP or Coefficient Of Performance. Heat pump COP is defined as: Heat Pump COP = Heating Output / Energy Input.. At higher temperatures (about 52°F and above), the heat pump coefficient of efficiency can be above 4. That means that a heat pump will produce 4 times as much heating output for every 1 unit f.. The coefficient of performance or COP (sometimes CP or CoP) of a heat pump, refrigerator or air conditioning system is a ratio of useful heating or cooling provided to work (energy) required. [1] [2] Higher COPs equate to higher efficiency, lower energy (power) consumption and thus lower operating costs. The COP is used in thermodynamics .
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Coefficient of Performance - Heat Pump. For heating, the COP is the ratio of the heat added to the system (hot reservoir). Using the first law of thermodynamics define COP also as the heat removed from the cold reservoir plus the input work to the input work. For an ideal heat pump (without losses and irreversibilities) can be derived that:. A good COP for heat pump units starts at about 2.0 for an air source heat pump and about 3.1 for geothermal, but heat pump COP can be well above 4.0 too, as seen in the chart below. A geothermal heat pump is also called a ground source heat pump. This guide includes the definition of coefficient of performance, and explanation of its practical.
