According to the production process requirements of manufacturing enterprises, the purification measures of electronic clean workshop are hot and wet treatment and air supply is the basic purification measures of clean room air conditioning; Refrigeration measures can be determined according to the requirements of clean room purification cooling process, cooling consumption, cooling mode, freezing water temperature and other parameters and measures, and at the same time, technical and economic comparison can be made by comparing the water source situation of the project construction area and the preparatory situation of power source and heat source, and comprehensive analysis of various factors can be determined. It is required to have a better economic index, but also to consider the local feasibility, among which the selection of refrigeration device is an important link in the process of determining refrigeration measures.

The electronic clean workshop purification measures, called whole-room purification, are created in the whole room with the same cleanliness environment purification treatment by the centralized purification air conditioning system. This is an early development in clean technology and is still used today. This way is suitable for the process equipment tall, a lot of, and indoor requirements of the same cleanliness. However, this method has large investment, complex operation and management, and long construction cycle.

The centralized purification air conditioning system is composed of primary and middle effect air filters (filter impurities, etc.) and heat and humidity treatment equipment. The air conditioning box is placed in the air conditioning room, and the pipe is connected with the static pressure box of the air inlet in the air conditioning room and the high pressure filter in the box. The cold source of this system can be provided by the freezing station or the installation of refrigeration in the air conditioning room. Now large air conditioners are specialized technical chemical plant segment production, to the site assembly.

At present, it is especially widely used in the combination of whole-room purification and local purification. This is the purification method produced in the development of clean technology. It can not only ensure a certain indoor cleanliness, but also achieve a high cleanliness environment in local areas, so as to meet the requirements of high cleanliness environment in production and the dual purpose of saving energy.