Whether it is an industrial clean room or a biological clean room, after calculating the air conditioning load, supply air volume, return air volume, exhaust air volume, and fresh air volume of each room, it is necessary to divide the system to meet the requirements of the production process and related specifications. Require. But many people don't know how it should be divided, so let me explain it to you.
1. Divide by usage time
In any production process, each production link does not work at the same time. As far as possible, clean rooms with the same working hours are incorporated into a system (the locations of these clean rooms are relatively concentrated), and the system can be stopped during non-working hours to achieve purpose of energy saving.
2. According to the clean room heat and humidity ratio
Divide clean rooms with similar heat and humidity ratios into one system as much as possible to avoid the defect of too large deviation of temperature and humidity.
It also helps to simplify the system, eliminating the need for cooling or reheating facilities at the end of the cleanroom.
3. According to temperature and humidity conditions
The temperature and humidity requirements are formed into a system with the same or similar clean rooms, which simplifies the system and is conducive to energy saving.
4. According to the ventilation situation
It is beneficial to the design of the system to classify a clean room that requires exhaust air or a large amount of exhaust air as a system.
5. Divided by cleanliness level
Classify clean rooms with cleanliness level 100 and higher as one system, and clean rooms below class 100 into one system, which is conducive to temperature and humidity control.
6. According to the nature of the process
Concentrating clean rooms with the same process nature and no contaminant release into one system is beneficial to prevent cross-contamination.
The above system division principles are sometimes difficult to satisfy at the same time. If the location of the clean room that should be classified as one system is too scattered, it should not be concentrated in one system. At this time, the individual scattered clean rooms can be incorporated into other systems nearby. The system division mentioned here is for a large clean workshop. If the workshop is small, as long as the industry standard allows the use of one system, there is no need to divide it, so as to save the area of the computer room. Generally, it is better to be limited to the air supply volume of 40,000 m'/h.
When only a small area of clean room in the whole workshop is one-way flow, as long as the industry standard allows, it can also be combined with a non-one-way flow clean room into a system. Special measures are adopted to solve the disadvantages of overcooling in summer and overheating in winter, which can simplify the system and save the area of the machine room. Therefore, the above-mentioned principles should be applied flexibly, and cannot be applied mechanically.
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