Clean room comprehensive performance, noise detection

Clean room comprehensive performance, noise detection

Regular maintenance and testing should be carried out during the operation of the clean room air-conditioning system. After the filter of the air-conditioning system is operated for a period of time, due to the formation of filter cake, the resistance of the filter will continue to increase, and the operating cost will increase. When it reaches a certain level, it should purify the air conditioning system...

Text label: clean room inspection, clean room design, clean room engineering

Clean room comprehensive performance, noise detection

Regular maintenance and testing should be carried out during the operation of the clean room air-conditioning system. After the filter of the air-conditioning system is operated for a period of time, due to the formation of filter cake, the resistance of the filter will continue to increase, and the operating cost will increase. When it reaches a certain level, the heat and humidity treatment equipment, fans and filters in the purification air conditioning system should be replaced. After the end air filter is replaced, the system fan should be started to put the purification system into operation, and comprehensive performance testing should be carried out. Determination of uniformity; detection of indoor air temperature and relative humidity; detection of indoor airflow pattern; detection of streamline parallelism; detection of indoor cleanliness; measurement and control of indoor static pressure; detection of indoor planktonic bacteria and sedimentary bacteria ; Indoor noise detection; pollution leak test, etc.

To measure the static pressure difference between indoor and outdoor, various micro pressure gauges should be used for the testing instrument. The sensitivity of the instrument should be less than 1.0pa. The rooms inside are measured outward in turn, and a tilting micromanometer can be used for the measurement. For adjacent clean rooms with different air cleanliness grades connected with holes, there should be a reasonable airflow direction at the openings. The wind speed should be greater than 0.2m/s. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for clean rooms and clean workshops.

The detection of indoor noise should meet the requirements of the national standard 'Code for Design of Clean Workshops'. When the noise in the clean room is measured by the air conditioner, the noise level of the non-unidirectional flow clean room should not be greater than 60dB(A). The noise level of the clean room is not more than 65dB(A); when measuring the noise of the clean room, a sound level meter that conforms to national standards should be used, and the sound level meter should have octave analysis; The point layout should be divided equally according to the area of u200bu200bthe clean room, and one point should be set every 50m2, and the measuring point should be located in the center, at a height of 1.1m-1.5m from the ground or determined according to the process requirements; the A sound level should be measured when the noise is stable, and the measured value can be Mark dB(A), such as 65dB(A); for unstable noise, measure the exposure time under the equivalent continuous A sound level, calculate the equivalent continuous A sound level, generally take the slow gear and take the average; During the measurement, attention should be paid to avoid or reduce the influence on the measurement results due to factors such as airflow, electromagnetic field, temperature and humidity.

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