T/CRAAS 432-2017 Active Group standards

T/CRAAS 432-2017 Test Method for General Ventilation Filters

T/CRAAS 432-2017

Publish Date: 2017-06-01 Implement Date: 2017-09-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CRAAS 432-2017

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Refrigeration technology

Publish Date: 2017-06-01

Implement Date: 2017-09-01

Scope

Main technical content: This standard relates to general ventilation air filters. The filters are graded based on the performance measured according to this test procedure. This standard specifies the requirements for air filters and stipulates the test methods and test benches for measuring the performance of filters. To obtain test results for comparison and grading, two artificial aerosols are used in air filter tests: fine aerosols are used to measure the filter efficiency curve against particle size in the range of 0.2 μm to 3.0 μm, and coarse aerosols are used to obtain information on the test dust loading. In addition, coarse aerosols are used to measure the filter efficiency (weight efficiency) of coarse-efficiency filters. This standard applies to air filters with an initial filtration efficiency of less than 98% for 0.4 μm particles. The test air volume of the filters is 0.24 m3/s to 1.5 m3/s (850 m3/h to 5,400 m3/h). The performance test results obtained according to this standard cannot be used to quantitatively predict the performance of the filters, such as the filtration efficiency and service life in use. Appendix A (informative appendix) introduces other factors that affect performance and need to be considered.