GB/T 6165-2021 English PDFUS$969.00 · In stock
Delivery: <= 7 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 6165-2021: Test method of the performance of high efficiency particulate air filter - Efficiency and resistance Status: Valid GB/T 6165: Historical versions
Basic dataStandard ID: GB/T 6165-2021 (GB/T6165-2021)Description (Translated English): Test method of the performance of high efficiency particulate air filter - Efficiency and resistance Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: Q76 Word Count Estimation: 52,590 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 6165-2021: Test method of the performance of high efficiency particulate air filter - Efficiency and resistance---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. (High efficiency air filter performance test method efficiency and resistance) ICS 91.140.30 Q76 National Standards of People's Republic of China Replace GB/T 6165-2008 High efficiency air filter performance test method Efficiency and resistance Released on 2021-04-30 2021-11-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee Table of contentsForeword Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions, abbreviations 1 4 Choice of test method 4 5 Performance devices and test methods of high-efficiency and ultra-high-efficiency air filters 4 6 Test methods for performance of high-efficiency and ultra-efficient filter media 17 Appendix A (Normative Appendix) The structure and maintenance of the sodium flame filter performance test device 28 Appendix B (informative appendix) Sodium flame method filter and filter material test device component structure diagram 33 Appendix C (Normative Appendix) Construction and Maintenance of Oil Mist Filter Test Device 36 Appendix D (Normative Appendix) Proofreading, Calibration and Maintenance of Oil Mist Filter Test Device 39 Appendix E (Normative Appendix) Vaporization-condensation type oil mist generator in the oil mist filter test device 41 Appendix F (Normative Appendix) Oil mist meter 44 Appendix G (Normative Appendix) Structure and Maintenance of Sodium Flame Filter Material Test Device 45 Appendix H (Normative Appendix) Oil mist generator in filter material test device 47 High efficiency air filter performance test method Efficiency and resistance1 ScopeThis standard specifies the terms, definitions, symbols and abbreviations for high-efficiency, ultra-high-efficiency filter media and filter efficiency and resistance testing, and the test method Selection, high-efficiency and ultra-efficient air filter performance test methods, high-efficiency and ultra-efficient filter material performance test methods, etc. This standard applies to the detection of efficiency and resistance of high-efficiency and ultra-high-efficiency filter materials and filters used in filtering aerosols. Sub-high efficiency filter material and The efficiency and resistance of the filter can be tested by reference.2 Normative referencesThe following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document. GB/T 1236 Standardized air duct performance test for industrial ventilators GB/T 2624.2 Use a differential pressure device installed in a circular cross-section pipe to measure the flow of fluid in a full pipe. Part 2.Orifice plate GB/T 2624.3 Use a differential pressure device installed in a circular cross-section pipe to measure the flow of fluid in a full pipe. Part 3.Nozzle and Venturi Inside nozzle GB 11120 turbine oil GB/T 12564 General Specification for Photomultiplier Tubes GB/T 13554 high efficiency air filter GB/T 14295 air filter GB 50243 Code for acceptance of construction quality of ventilation and air-conditioning engineering JJF1190 Dust Particle Counter Calibration Specification JJG172 Inclined Micro Manometer JJG875 Digital Pressure Gauge Verification Regulation 3 Terms and definitions, abbreviations 3.1 Terms and definitions The following terms and definitions defined in GB/T 13554 apply to this document. 3.1.1 Penetration When testing the filter element, the ratio of the aerosol concentration after the filter element is filtered to the aerosol concentration before the filter. 3.1.2 Efficiency When testing the filter element, the ratio of the amount of aerosol filtered by the filter element to the amount of aerosol before filtration. 3.1.3 Rated airflow rate The technical parameters that identify the working capacity of the filter indicate the maximum air volume flow per unit time that guarantees the efficiency of the filter. Note. Provided by the filter manufacturer. 3.1.4 Resistance Under certain test wind speed or air volume conditions, the static pressure difference before and after the filter element. For the filter, it is before and after the filter at the rated air volume The static pressure difference. 3.1.5 Filtermedium Unfolded flat filter material used to filter aerosols. 3.1.6 High efficiency air filter highefficiencyparticulateairfilter;HEPA For air filtration and use the counting method specified in this standard for testing, the filtration efficiency and Air filters whose filtration efficiency after antistatic treatment is not less than 99.95%. 3.1.7 Ultra high efficiency air filter ultralowpenetrationairfilter; ULPA For air filtration and use the counting method specified in this standard for testing, the filtration efficiency and Air filters whose filtration efficiency after antistatic treatment is not less than 99.999%. 3.1.8 High efficiency filter medium HEPAfiltermedium Used to make the filter material of high efficiency air filter. 3.1.9 ULPAfiltermedium Used to make the filter material of ultra-high efficiency air filter. 3.1.10 Aerosolgenerator A device used to produce standard aerosols for testing. 3.1.11 Particle count concentration particlenumberconcentration The number of particles within the range of the measured particle size per unit volume of gas (air). 3.1.12 Particlesize The nominal diameter of the particle measured by a certain method (optical or aerodynamic equivalent test). 3.1.13 Diameter counting efficiency particlessizeefficiency The filtration efficiency of the filter element for particles of a certain size. 3.1.14 Most penetrating particle size; MPPS When the test is carried out according to the counting method specified in this standard, the particle size corresponding to the lowest point of the diameter measurement efficiency curve of the tested filter element. 3.1.15 Minimumfilterefficiency Under given operating conditions, the filtration efficiency of the tested filter element for the most easily permeable particle size particles is generally called MPPS efficiency. 3.1.16 Median particle diameter When the cumulative distribution of aerosol particle size accounts for 50% of the total, the corresponding particle size is usually expressed by counting median diameter and mass median diameter. 3.1.17 Samplingflowrate When the detection instrument measures the particle concentration upstream or downstream of the filter element, it measures the air volume flow rate sampled by the element. 3.1.18 Samplingduration Under the sampling volume flow, the effective time of air sampling upstream or downstream of the tested high efficiency air filter element. 3.1.19 Coincidence error In a given time, the error caused by the scattering cavity of the particle counter contains multiple particles. Note. The coincidence error will lead to low count concentration and high average particle size in the measurement results. 3.1.20 Monodisperse aerosol monodisperseaerosol When described by the distribution equation, the geometric standard deviation of the particle size is less than 1.15 (σg< 1.15). 3.1.21 Quasi-monodisperse aerosol quasi-monodisperseaerosol When described by the distribution equation, the geometric standard deviation of the particle size is greater than or equal to 1.15 and less than or equal to 1.50, that is (1.15≤σg≤1.50) Aerosol. 3.1.22 Polydisperseaerosol When described by the distribution equation, the geometric standard deviation of the particle size is greater than 1.50 (σg >1.50). 3.1.23 Sodium flame method A polydisperse NaCl aerosol is generated, and the mass concentration of the upstream and downstream of the filter element is detected with a sodium flame photometer, and the quality of the filter element is calculated effectiveness. For the filter material and filter test, the peak diameter of the test aerosol particles is (0.09±0.02) μm, and the counting geometry standard is (0.09±0.02) μm. The standard deviation is not more than 1.90. 3.1.24 Oilmistmethod A polydisperse liquid aerosol occurs, and the average particle diameter is 0.28μm~0.34μm. Use an oil mist meter to detect the upper and lower parts of the filter element. The mass concentration of the swimming pool is used to calculate the mass efficiency of the filter element. 3.1.25 Quasi-monodisperse aerosol counting method particlecountingmethodwithquasi-monodisperseaerosol Quasi-monodisperse aerosols (such as solid particles NaCl or liquid particles DEHS, etc.) occur, and the median diameter of the particles is 0.10 μm~ Between 0.30μm, the geometric standard deviation is not more than 1.50, use condensation nucleus particle counter (CPC) or optical particle counter (OPC) to detect Calculate the counting efficiency of the filter material by counting the concentration of the upstream and downstream of the filter material. 3.1.26 Monodisperse aerosol counting method particlecountingmethodwithmonodisperseaerosol Monodisperse aerosol is generated, and the condensation nucleus particle counter (CPC) is used to detect the counting concentration of the upstream and downstream of the filter element, and calculate the filter element Counting efficiency of pieces. There are many ways to generate monodisperse aerosols, such as differential electromigration analyzer (DMA), diffusion battery pack, evaporation Condensation method, polystyrene latex ball (PSL), etc. 3.1.27 Polydisperse aerosol counting method particlecountingmethodwithpolydisperseaerosol Polydisperse aerosols (such as solid particles of NaCl or liquid particles of DEHS, etc.) have been detected using an optical particle counter (OPC) The counting concentration of the upstream and downstream of the filter element is used to calculate the counting efficiency of the filter element. 3.1.28 Correlation coefficient The ratio of the particle concentration in the upstream and downstream sampling systems when the test system is not equipped with the tested filter and maintains a stable aerosol concentration. Note. When the test system uses an optical particle counter (OPC) to detect the upstream and downstream aerosol concentrations of the tested filter in turn, the correlation coefficient table Shows that due to the particle loss of the upstream and downstream sampling pipelines, the dilution ratio of the diluter (if the upstream sampling adopts a diluter), and the difference between the upstream and downstream sampling time The difference between the upstream and downstream sampling systems caused by the test system; when the test system samples two optical particle counters (OPC) respectively for the upstream and downstream gas dissolution of the tested filter When the glue concentration is detected, the correlation coefficient represents the difference caused by the sampling flow rate and counting efficiency of the upstream and downstream sampling counters. 3.2 Abbreviations The following abbreviations apply to this document.4 Choice of test method4.1 This standard gives three test methods. counting method, sodium flame method, and oil mist method. The reference method is counting method. 4.2 For high-efficiency air filters and filter materials, any of the three methods can be used for efficiency testing according to requirements, but they should be noted at the same time. State the test methods and test results. In the production and testing of high-efficiency filter media, it is advisable to use sodium flame under the conditions of a clear comparison with the benchmark method. Fast test methods such as method and quasi-monodisperse aerosol counting method. 4.3 For ultra-high efficiency air filters and filter materials, the counting method should be used for efficiency testing. In the production and testing of ultra-high efficiency filter materials, it is appropriate to Under the condition of a clear comparison with the benchmark method, rapid test methods such as the quasi-monodisperse aerosol counting method are used. 4.4 For filters and filter media with MPPS not greater than 0.1μm, the benchmark method is the monodisperse aerosol counting method. Filter out in this category In the factory inspection, the counting method can be used to test the particles in the range of 0.1μm~0.2μm under the condition of clear comparison with the reference method. And according to the comparison with the benchmark method to revise the test results. 5 Performance devices and test methods of high-efficiency and ultra-high-efficiency air filters 5.1 Requirements for test equipment 5.1.1 Fan 5.1.1.1 Air volume The air volume should be calculated as 1.3 times the maximum air volume of the tested filter. 5.1.1.2 Wind pressure The wind pressure should include at least the sum of the following items. a) Air duct resistance (taken as 1.2 times the calculated resistance); b) The resistance of the air inlet filter (taken as 2 times the initial resistance); c) The maximum resistance of the tested filter; d) Resistance of the air volume measuring device; e) For the sodium flame method test device, the positive pressure value required for sampling after the filter should be considered (not less than 600Pa). 5.1.1.3 Air volume stability During the test, the air volume of the test device should be stable within ±2% of the set value. 5.1.2 Air duct 5.1.2.1 Materials The sodium flame method test device should be made of polyvinyl chloride plastic or other corrosion-resistant materials from the spray box to the buffer box; the other of the sodium flame method test device Stainless steel air ducts should be used for the remaining part and other test devices. The wall thickness of the duct should not be less than 1mm. When necessary, the air duct should be grounded and Rot treatment. 5.1.2.2 Dimensions of the front and rear pipe sections of the air volume measuring device When a standard orifice plate is used, the size of the front and rear pipe sections should be designed in accordance with the relevant requirements of GB/T 2624.2; when the standard nozzle is used At the time, the front and rear pipe section dimensions should be designed in accordance with the relevant requirements of GB/T 2624.3. 5.1.2.3 Angle of the test filter connecting pipe The included angle of the diffusion section of the test filter connecting pipe should not be greater than 14°, and the included angle of the convergent section should not be greater than 30°, and should meet GB/T 1236 Related requirements. 5.1.2.4 Air duct tightness The production, installation and inspection of the air duct in the test device shall meet the relevant requirements of GB 50243 for medium pressure systems, and the joints of the air duct shall be adopted welding. The air duct tightness should be suppressed and leak tested under a pressure of 2kPa, and the air leakage should not be greater than 1.64m3/(h·m2). 5.1.3 Air inlet filter 5.1.3.1 Pre-filter The pre-filter should meet the relevant requirements of GB/T 14295 medium-efficiency filter. 5.1.3.2 High efficiency air filter The high efficiency air filter should meet the relevant requirements of GB/T 13554.When a heater is provided upstream of the filter, the temperature resistance of the filter should not be low At 60°C. 5.1.4 Wind speed uniformity of upstream sampling section Adjust the operating air volume of the test device to the maximum test air volume, and the cross section of the sampling point upstream of the test air duct is according to Figure 1 according to the cross-sectional area of the air duct. The average distribution shown is 9 measuring points, and the wind speed is tested separately. The deviation between the actual wind speed of each measuring point and the average value of each measuring point should not be large. Less than 10%. Fig.1 Schematic diagram of measuring point arrangement for wind speed and aerosol concentration uniformity of upstream sampling section 5.1.5 The uniformity of aerosol concentration in the upstream sampling section Adjust the operating air volume of the test device to the maximum test air volume, start the aerosol generator and maintain stable operation, and sample upstream of the test air duct According to the cross-sectional area of the air duct, 9 measuring points are evenly distributed as shown in Figure 1 to test the aerosol concentration. The measured aerosol concentration is measured at each measuring point. The deviation between the glue concentration and the average value of each measuring point should not be more than 10%. 5.1.6 Stability of upstream aerosol concentration Adjust the operating air volume of the test device to the maximum test air volume, start the aerosol generator and maintain stable operation, and sample upstream of the test air duct Sampling is performed at the point, and the fluctuation of the measured aerosol mass concentration or the count concentration within a given particle size range within 30 minutes should not exceed 10%. 5.1.7 General test equipment requirements The air volume test device can use standard orifice plates or nozzles, and is designed and installed in accordance with the relevant requirements of GB/T 2624.2 and GB/T 2624.3. Installation, use and calibration, and should meet the following requirements. a) The pressure test device used for the filter resistance and the pressure difference measurement of the flow measurement device, the accuracy should not be less than 2Pa, and should be based on the selected Depending on the pressure test device, the verification and calibration shall be carried out regularly according to the relevant requirements of JJG172 or JJG875. b) The counter should be periodically verified and calibrated according to the relevant requirements of JJF1190.The photoelectric measuring instrument in the sodium flame photometer should be According to the relevant requirements of GB/T 12564, the stability test and calibration are carried out regularly. The oil mist meter should be carried out in accordance with the requirements of 5.4.3.1.1.4 Calibration. 5.1.8 Upstream and downstream sampling correlation coefficient When the aerosol generator is working stably, the filter is not installed in the test section, and the diluter is not installed in the upstream sampling section, the correlation coefficient of each particle size block It should be 1.00 ± 0.03.After installing the diluter in the upstream sampling section, the correlation coefficient of each particle size block should be tested and confirmed regularly. 5.1.9 Resistance standard 5.1.9.1 Use orifice plates with known resistance (or other resistance standards) to conduct periodic tests according to 5.2.4.2.4. 5.1.9.2 The resistance standard should be properly stored and kept when not in use to prevent damage. 5.1.9.3 The test of resistance standard parts shall meet the following requirements. a) At least 4 air volume status points should be selected for testing within the air volume range of the test device. b) During each test, the deviation between the resistance test results at each air volume state point and the calibration value should not be more than 3%. If the resistance standard If the deviation between the test resistance value and the calibration value is greater than 3%, the necessary measures should be ta......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 6165-2021_English be delivered?Answer: Upon your order, we will start to translate GB/T 6165-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 7 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 6165-2021_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 6165-2021_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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