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This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by and is under the jurisdiction of Shanghai Municipal Bureau of Quality and Technical Supervision.
Method of test for purification performance of passenger vehicle air purifier
1 Scope
This standard specifies the method for testing the purification performance of passenger vehicle air purifiers (hereinafter referred to as air purifiers) for pollutants in the air.
It is applicable to air purifiers used in passenger vehicles with 7 seats or less.
Note: Air purifiers used in passenger vehicles with 8 seats or 9 seats may also be implemented by reference to this standard.
It is not applicable to the air purifiers fixedly installed in the air conditioning system of passenger vehicles.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 4706.45 Household and similar electrical appliances - Safety - Particular requirements for air-cleaning appliances
GB/T 18801-2015 Air cleaner
GB/T 18883-2002 Indoor air quality standard
GB 21551.3-2010 Antibacterial and cleaning function for household and similar electrical appliances - Particular requirements of air cleaner
GB/T 27630-2011 Guideline for air quality assessment of passenger car
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
passenger vehicle air purifier
electrical appliance with certain removal capacity for one or more pollutant(s) such as particulate matters, gaseous pollutants and microorganisms in air, used in passenger vehicle and capable of operating independently
3.2
rated status
operating status of air purifier corresponding to its nominal purification capacity
3.3
natural decay
concentration reduction of pollutants in the air under specified space and conditions due to factors such as settlement, agglomeration, surface deposition, chemical reaction and air exchange
3.4
total decay
concentration reduction of pollutants in the air under specified space and conditions due to combined action of natural decay and purification of air purifier
3.5
purification efficiency
capacity of the air purifier for removing particulate matters, gaseous pollutants and microorganisms under rated status and at specified test cabin, test time, initial pollutant concentration, etc.
3.6
purification efficiency curve
changing curve of purification efficiency with test time, which is used to show the change status of the purification efficiency of air purifier
4 Test apparatus
The basic performance of test apparatus shall meet the following requirements:
a) thermometer: with a division value of 0.5℃;
b) hygrometer: with the resolution of 2% (relative humidity);
c) timing instrument: with a division value of 0.1s;
d) laser airborne particle counter: with the test particle size from 0.3μm to 5.0μm;
e) spectrophotometer: with the wavelength from 190nm to 900nm;
f) gas chromatograph: equipped with hydrogen flame ionization detector;
g) on-line gaseous pollutant concentration tester: with the resolution not less than 0.01mg/m3;
h) ozone concentration tester: ultraviolet spectrophotometry, with the resolution not less than 0.1×10-6%;
i) ultraviolet illuminometer: with the measuring spectral range of 220nm~400nm, and the resolution not less than 1μW/cm2;
j) constant flow sampler: with the flow range of 0L/min~1L/min, the flow being adjustable, and the flow error less than ±5% of set value;
k) test cabin: with internal volume of (3.0±0.1)m3, internal dimension (length × width × height) of 1.65m×1.5m×1.2m, which shall meet the requirements of Annex A;
l) pollutant generating device: see Annex B.
5 Test methods
5.1 General test conditions
5.1.1 Except the test of which specific provisions are made for the test ambient conditions, the test shall be carried out in the laboratory with the ambient temperature and relative humidity of (25±2)℃ and (50±10)% respectively and without external airflow, strong sunlight or other radiation effects; in addition the concentration of particulate matters and chemical gaseous pollutants in the laboratory shall meet the requirements of GB/T 18883-2002.
5.1.2 Background conditions of test cabin: the temperature in the test cabin shall be (25±2)℃ and the relative humidity shall be (50±10)%; the background concentration of particulate matters above 0.3μm shall be less than or equal to 1×104/L; during testing the purification capability for gaseous pollutants, the background condition of corresponding pollutant shall not be higher than 20% of the limit specified in GB/T 18883-2002.
5.1.3 The air purifier to be tested shall be tested under rated status after the complete machine condition, filter installation and various functions are confirmed normal according to the requirements of the instructions.
5.2 Preparation before test
5.2.1 Check whether the test apparatus are within the qualified period of measurement and can work normally. The on-line gaseous pollutant concentration tester shall be periodically calibrated according to its measuring range (at least including 100%, 50% and 20% of the upper concentration limit within the measuring range), and the deviation with that measured by chemical method or chromatography shall be within ±10%.
5.2.2 When the package of the air purifier to be tested is opened during trial run, the air purifier to be tested shall be confirmed normal in the complete machine condition, filter installation and various functions according to the requirements of the instructions, and then it is put into trial run in the laboratory meeting the requirements of 5.1 for 1h.
5.2.3 One sampling point shall be set at a distance of 40cm to 45cm from the wall of the test cabin and 75cm to 80cm above the bottom surface of the test cabin (keep the maximum distance from the pollutant generating port as possible). The air inlet of the sampling tube is vertically upward. The test stand is 45cm to 50cm high, and it is placed in the center of the test cabin.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Test apparatus
5 Test methods
6 Calculation
7 Plotting of purification efficiency curve
Annex A (Normative) Requirements for test cabin
Annex B (Informative) Pollutant generating device
Annex C (Information) Application of purification efficiency curve
