Clean room purification air conditioning debugging and testing

Clean room purification air conditioning debugging and testing

Performance measurement and acceptance need to be carried out after the construction of the purification air-conditioning system and the clean clean room modular and after it is put into production, and a comprehensive measurement or inspection should also be carried out when the system is overhauled or updated; after the clean room is delivered for use, due to improper maintenance management, the staff Misoperation and clean air...

Text label: clean room design company, clean clean room modular testing, clean room purification installation

Clean room purification air conditioning debugging and testing

Performance measurement and acceptance need to be carried out after the construction of the purification air-conditioning system and the clean room and after it is put into production, and a comprehensive measurement or inspection should also be carried out when the system is overhauled or updated; after the clean room is delivered for use, due to improper maintenance management, the staff Misoperation and long-term operation of the purification air conditioning system will cause changes in the performance of the air filter, emergencies in the surrounding environment, and changes in the clean room process, which will affect the overall performance of the clean room. Therefore, frequent monitoring or regular performance testing of the clean room is necessary. , to verify that the performance of the clean room or clean area meets the requirements of the specification. Before the measurement, have a comprehensive understanding of the general situation of the clean room, including the plan, cross-section and system diagram of the purification air conditioning system and process layout, the requirements for the cleanliness level, temperature and humidity, wind speed, etc. of the air environmental conditions, air treatment methods, and return Air, exhaust air volume and airflow organization, personnel and material purification methods, use of clean rooms, pollution conditions in the factory area and surrounding areas, etc., so as to analyze factors affecting environmental conditions and other factors after measurement.

The measurement contents of clean room adjustment mainly include: measurement of airflow velocity and its uniformity; measurement of air volume of system or room; measurement of indoor cleanliness; measurement of self-cleaning time; measurement of airflow pattern; measurement of illuminance; measurement of noise; measurement of temperature Determination of humidity; determination of total air volume and total fresh air volume; installed filter leak testing. The measurement of airflow speed and its uniformity is the premise of other measurements in the clean room, because other effects must be obtained under the designed wind speed, air volume and its uniformity. The purpose of the measurement is to clarify the cleanliness of unidirectional flow The average airflow and its uniformity in the working area of u200bu200bthe room; the air volume of the system or room is measured. Before the measurement, it is necessary to check whether the fan is running normally, whether the components in the system are installed correctly, and whether there are any obstacles such as whether the filter is blocked or not. All valves such as air volume control valve, pipe damper, and air outlet control valve are fixed in a certain open position. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for clean rooms and purification projects.

To test the cleanliness of the clean room, arrange the measuring points in the room, select the used and calibrated dust particle counter, draw the floor plan of the indoor measuring points, and number the measuring points for testing For the unidirectional flow clean room, the sampling port of the particle counter should face the airflow direction, and for non-unidirectional flow, the sampling port should be upward, so that the airflow velocity of the sampling port is as close as possible to the airflow velocity in the room ; It should be noted that the mouth of the sampling pipe must be clean, and there should be no leakage at the continuous point. The length of the sampling pipe should be based on the allowable length of the instrument. If there is no regulation, it should not be greater than 1.5m; the sampling times of each sampling point should not be less than 3 times. , but the sampling times of each sampling point can be different. Under the condition of stable operation of the test instrument, each measurement data is recorded on the record sheet.

For a one-way flow clean clean room modular, the air supply volume is determined by the method of the average wind speed of the indoor section and the cross-sectional area, and the section that is 0.3m away from the high-efficiency filter and perpendicular to the airflow is taken as the sampling section, and the distance between the measuring points on the section should not be greater than 0.6 m, the number of measuring points should not be less than 5; the test plane is 0.3m away from the high-efficiency filter, where the air flow at the outlet of the filter is relatively stable and stable, and there is no interference from personnel and process equipment, and the measured airflow wind speed is close to the real wind speed. For non-unidirectional flow cleanrooms, use the tuyere or air duct method to determine the supply air volume.

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