The air heat exchanger is a heat exchange device that uses air to remove heat. The heat transfer of the air depends on the air volume and the air temperature (ambient temperature).
Large changes in ambient air temperature affect the heat transfer and operation of the air heat exchanger.
It will bring unfavorable factors and also affect the energy consumption of the air heat exchanger.
If you make good use of the temperature change factor and choose an appropriate adjustment method, you can not only operate stably, but also achieve the purpose of energy saving.
The calculation of the air volume of the air heat exchanger and the selection of the fan are based on the monthly average of the highest temperature in the hottest month in the local area plus 2-3 ℃ or the average temperature of the air that does not exceed five days per year in the local summer.
For areas with large temperature differences, such as the northeast and northwest of my country, the average temperature difference between the hottest month and the coldest month will reach 30-50°C, and the average heat transfer temperature difference of the air heat exchanger is very large, that is to say, the original design air volume There is a large excess, which causes unnecessary supercooling of the heat flow terminal cooling in the tube and wastes energy.
The energy consumption of the fan is directly proportional to the air volume, so the fan with adjustable air volume is used.