Abstract：

Presents the temperature, humidity and cleanliness independent control design scheme of a low temperature and humidity clean workshop in Hainan. Adopts the air distribution patterns of the plane partition, vertical stratification and stratification height adjustable, and the technical measures of the refrigeration dehumidification with heat recovery, split air conditioners in contracture wall and air conditioning condensed water recovery. According to the test results, reduces the purification and ventilation rate. The combined effect of these optimization measures greatly reduces the investment cost, energy consumption, operating cost and the plant area. The air conditioning and purification system has passed the examination of winter and summer conditions, and all the performance indexes meet the design requirements. The design and research exploration practice will play an important role for the engineering design of large-space clean workshop and related design codes revision.