How to Calculate the COP Value of Air Source Heat Pump Water Heater

COP value are very important index in many industries, in the middle of the air source heat pump water heater, represented by the heating coefficient of performance.Air source heat pump water heater in circulation work, the heating coefficient of performance COPh refers to in a certain condition, the compressor system with the same heat of the ratio of the compressor shaft power under the condition of PE.In simple terms, the COP is actually a heat pump system and the implementation of the heating and the ratio of the input power, under the same conditions, the ratio shows that the efficiency of the heat pump system, the higher the more the greater the energy saving.

The user wants to know the source of the COP value, can under standard conditions were calculated by formula.Air source heat pump water heater under standard conditions: temperature 25 degrees, the water temperature of 15 degrees.Water temperature from 15 degrees heat to 55 degrees, measured power consumption for W;Water temperature from 15 degrees heat to 55 degrees, the time required for t;Tank measured net capacity to remember L;Water heat gain as: Q=C*L*△T, average water heater heating capacity is: Q = Q/T, water heater of the average power consumption is: P = W/T, measured the COP for standard conditions: COP = q/P=C*L*△T/W.

In addition to the above way, consumers can also be concluded that COP value in the simple way, such as air source heat pump for heating system heat is P1 (KW) of the rated power of the heat pump is P2 (KW) then the COP = P1 / P2.Air source heat pump water heater of COP value not only receive the objective external environment influence, also will be affected by their own factors, such as the coefficient of performance of the compressor, heat pump system: (the so-called system match is to point to: compressor, condenser, evaporator, throttle body and the matching performance of automatic control system.)Obtained from the COP value is more than just air can water heater can effect comparing, can be roughly understanding to the matching performance between the internal parts.