This paper conducts an experimental study on the performance of the air cooler in stable operation. According to the ASHRAE standard

the air cooler test room was built

and the performance of the air cooler varies with factors such as the storage temperature

the driving temperature difference

and the ratio cycle was studied. The results show that when the driving temperature difference is 10 ℃ and ratio cycle is 3

the heat transfer performance of the air cooler increases with the increase of the storage temperature. When the storage temperature increases from -34 ℃ to 10 ℃ the heat transfer coefficient increases from 16 W/(m2?℃) to 18.8 W/(m2?℃)

with a percentage of 17.5%; When the cycle rate is 3

as the heat transfer temperature difference increases from 6 ℃ to 10 ℃

the heat transfer coefficient changes in a small range

and the maximum change in the test range is 4.9%. When the storage temperature is -25 ℃

the heat transfer coefficient varies from 16.8 to 17.63 W/(m2?℃)

when the storage temperature is -10 ℃

the heat transfer coefficient varies from 18.1 to 18.43 W/(m2?℃); with the increase of ratio cycle

the heat transfer coefficient increases accordingly.