Concentrated air-conditioning system should be used for cleaning asphyxia in large area, centralized and simultaneous operation or noise control and vibration control. Conversely, decentralized air conditioning systems can be used. Large-scale purification workshop can also separate fresh air disposal and decentralized purification air conditioning installation.

當需求滿足干凈室、正空氣量和排氣量的新風量時，空調系統應充沛應用回風。只要在加工過程中產生大量有害物質時，才干運用直流式空調系統，部分處置不能保證衛生請求或損壞其他過程。干凈室應在下列條件下單獨設置清潔空調系統：

When the demand meets the fresh air volume of clean room, positive air volume and exhaust volume, the air-conditioning system should make full use of the return air. As long as a large number of harmful substances are produced in the process of processing, DC air conditioning system can be used. Some disposal can not guarantee sanitary requests or damage other processes. Clean rooms should be separately equipped with clean air conditioning systems under the following conditions:

1.層流干凈室和湍流干凈室;

1. Laminar clean room and turbulent clean room;

2.末端過濾器的不同干凈室;

2. Different clean rooms for end filters;

3.干凈室和普通空調房;

3. Clean room and general air-conditioning room;

4.運轉班次或運用不同時間的干凈室;

4. Running shifts or using clean rooms at different times;

5.當干凈室面積過大或房間過大時，應分為幾個凈化空調系統，便當調整、回風管布置微風量、壓力;

5. When the area of clean room is too large or the room is too large, it should be divided into several purification air-conditioning systems, which can be adjusted conveniently, and the return air duct is arranged with light air volume and pressure.

6.消費過程請求空調系統不能一同運用。通常不倡議為空調系統裝置消聲器。應采取其他綜合措施，以滿足干凈室降噪的請求。當必需運用消聲器時，應運用由不產生灰塵且不易積聚的構造制成的消聲器和良好的吸音資料。

6. Consumption process requests that air conditioning systems cannot be used together. Mufflers are not usually recommended for air conditioning systems. Other comprehensive measures should be taken to meet the requirements of noise reduction in clean rooms. When it is necessary to use mufflers, mufflers made of structures that do not produce dust and are not easy to accumulate and good sound absorption materials should be used.

在干凈室中裝置部分排氣系統應思索以下幾點：

The following points should be considered when installing part of the exhaust system in the clean room:

1。排氣系統不應穿過兩個清潔空調系統;

1. Exhaust system should not pass through two clean air conditioning systems.

2.部分排氣系統應采取措施避免空氣回流。中間排放過濾器或止回閥能夠裝置在排氣系統上。

2. Some exhaust systems should take measures to avoid air reflux. Intermediate discharge filters or check valves can be installed in the exhaust system.

3.部分排氣系統應采取降噪措施。設置消聲器時，應將其放在風扇的吸氣局部上。

3. Some exhaust systems should adopt noise reduction measures. When the muffler is installed, it should be placed on the suction part of the fan.

4.應留意有害物質的排放，使其契合國度規則的排放規范。空調系統中的鼓風機、回風機和排風機應互鎖。聯鎖次第如下：當系統開啟時：首先翻開鼓風機，然后將風扇和排風扇驅回：當系統關閉時：首先關閉排氣扇并返回風扇，然后關閉鼓風機。

4. Attention should be paid to the emission of hazardous substances so as to conform to the emission standards of national rules. Blowers, return fans and exhaust fans in air conditioning systems should be interlocked. The interlocking order is as follows: when the system is open, first turn on the blower, then drive the fan and exhaust fan back: when the system is closed, first close the exhaust fan and return to the fan, then close the blower.