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In order to standardize the production of air conditioners and ensure the interests of consumers, the state business authorities have formulated a series of technical standards and corresponding measurement methods for air conditioners. Obviously, the main technical indicators of the air conditioner are not only the main basis for measuring its quality, but also the main basis for judging whether its operation is normal. Refrigeration people need to know several main technical indicators of air conditioning.
Refrigeration power consumption
The cooling power consumption of the air conditioner is divided into nominal cooling power consumption and actual cooling power consumption. The former refers to the nominal refrigeration power consumption on the air conditioner nameplate, or the power consumption corresponding to the nominal refrigeration capacity, the unit is W; The latter refers to the actual power consumption of the air conditioner during refrigeration operation under normal conditions.
If the ambient temperature used by the air conditioner does not meet the nominal refrigeration conditions, such as the indoor temperature is higher than 27 ° C, the outdoor temperature is higher than 35 ° C, the actual power consumption of the air conditioner must be greater than the nominal refrigeration power consumption.
* The national standard stipulates that the actual cooling power consumption of the air conditioner should not be greater than 110% of the nominal cooling power consumption
Energy consumption rate of heating
The heating power consumption of the air conditioner is also divided into nominal heating power consumption and measured power consumption. The former refers to the nominal heating power consumption on the air conditioner nameplate, that is, the power consumption corresponding to the nominal heat production, the unit is W; The latter refers to the actual power consumption during heating operation under normal conditions.
* The national standard stipulates that the actual heating power consumption of the air conditioner should not be greater than 110% of the nominal heating power consumption.
Energy consumption ratio EFP and performance coefficient COP
Energy consumption ratio EFP, also known as energy efficiency ratio, it refers to the ratio of cooling capacity and effective input power during refrigeration operation of the air conditioner under rated working conditions and specified conditions, and its value is expressed by W/W.
Performance coefficient COP refers to the ratio of heat production and effective input power during heat pump heating operation of air conditioner under rated working conditions and specified conditions, and its value is also expressed by W/W.
The effective input power refers to the average electrical power input in the air conditioner per unit time, including the input power of compressor operation and defrosting input power (except for auxiliary electric heating devices not used for defrosting), the input power of all control and safety devices and the input power of heat exchange transmission devices (fans, pumps, etc.).
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