Abstract: Environmental humidity in the air-enthalpy test method has a great influence on the measurement of air conditioner capacity, so it is very important to ensure the accuracy and reliability of environmental humidity. There are many factors that affect the humidity of the environment. There are many factors affecting environmental humidity, and the wind speed of the sampler is one of them. In order to keep a better consistency between laboratories, this paper puts forward better suggestions on the limit range of the wind speed of the sampler through theoretical analysis and experimental verification.

Key words: Air-enthalpy test method, Wind speed, Relative humidity