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What are the factors that affect the service life of air source heat pumps?

What are the factors that affect the service life of air source heat pumps?

2018-12-04

The air source heat pump is the same as the air conditioning principle. It is the same as the air conditioning principle. It is the heat generation process in which the refrigerant realizes the physical change of the phase change through the compressor to absorb the heat in the air. The amount of heat generated and the ambient temperature have Direct relationship, so we try to use it under high ambient temperature conditions during use.

    For many new users, the air source heat pump has a long service life, which is one of the most concerned issues in addition to the installation price. The current manufacturer's propaganda service life is generally 15 years. Through the use of these ten years of use, the service life of the air source heat pump is no problem for more than 10 years, so why is the manufacturer's current warranty only about 18 months? ? So what are the factors that affect the service life of air source heat pumps?

1. unit running time
The running time of the unit is generally no more than 12 hours. When this time is exceeded, the probability of failure of the unit will increase and the service life will be affected. In the process of selecting the type, we must listen to the manufacturer's suggestion and reasonably select the unit equipment. type.

2.ambient temperature
The ambient temperature can also directly affect the service life of the unit. Under the condition of low ambient temperature, a special type of heat pump unit should be selected to ensure that the unit can start and operate normally in a low temperature environment. The ambient temperature is lower than -25 degrees. In this case, we try not to use the heat pump unit for a long time. Due to the low temperature environment below -25 degrees, the refrigeration oil of the compressor is difficult to return to oil, and it is easy to cause the compressor to be stuck in the cylinder for a long time, which affects the service life of the unit.

3.External factors
The external factors mainly refer to human factors. It is manifested in whether the installation of the unit is installed and debugged by professional technicians. In the course of use, the unit should be operated under high water temperature and high pressure; when using in winter, it is necessary to pay attention to antifreeze work. When the unit is not in use, remember not to cut off the power supply. If the power supply is disconnected, we must drain the unit water; in the selected installation position of the unit, we should keep away from the place of soot and fallen leaves to prevent the leaves from falling off the blades. , affect the unit life.

4.The number of times the compressor is turned on and off
The longest life of the unit is determined by the compressor. When the start and stop are frequent, the compressor will be affected by the overcurrent, resulting in low life of the unit. Explanation: The main reason for the low heat generation of the unit at low temperature is that it has reached the liquefaction point of the working fluid used by the compressor at low temperature. The absorbed heat is not enough to completely vaporize the working medium, resulting in a decrease in the efficiency of the compressor, or even a The liquid hammer of the compressor causes a decrease in the life of the heat pump.

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