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GB 36893-2018 English PDF (GB36893-2018)

GB 36893-2018 English PDF (GB36893-2018)

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GB 36893-2018: Minimum allowable values of energy efficiency and energy efficiency grades for air cleaners

This Standard specifies the minimum allowable values of energy efficiency, energy efficiency grades, test and calculation methods of air cleaners. This Standard is applicable to the air cleaners with rated voltage not exceeding 250V, having certain particle matter cleaning capabilities (clean air delivery rate of particle is 50m3/h~800m3/h).
GB 36893-2018
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 27.010
F 01
Minimum Allowable Values of Energy Efficiency and
Energy Efficiency Grades for Air Cleaners
ISSUED ON. NOVEMBER 19, 2018
IMPLEMENTED ON. DECEMBER 01, 2019
Issued by. State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 5
4 Energy Efficiency Grades ... 6
5 Minimum Allowable Values of Energy Efficiency ... 6
6 Test and Calculation Method ... 6
Appendix A (Normative) Test and Calculation Method on Purification Efficiency of Gaseous Pollutants ... 8
Minimum Allowable Values of Energy Efficiency and
Energy Efficiency Grades for Air Cleaners
1 Scope
This Standard specifies the minimum allowable values of energy efficiency, energy efficiency grades, test and calculation methods of air cleaners.
This Standard is applicable to the air cleaners with rated voltage not exceeding 250V, having certain particle matter cleaning capabilities (clean air delivery rate of particle is 50m3/h~800m3/h).
This Standard isn?€?t applicable to.
--- Air cleaners using only ion generation technology;
--- Airway air cleaning device and other similar air cleaners;
--- Air cleaners with only gas pollutants and microbial cleaning capabilities; --- Air cleaners designed for industrial use, medical use and vehicles; --- Air cleaners used in special environmental places such as corrosive or explosive gases (such as dust, steam or gas).
2 Normative References
The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this document.
GB/T 18801-2015 Air Cleaner
GB/T 18883-2002 Indoor Air Quality Standard
Appendix A
(Normative)
Test and Calculation Method on Purification Efficiency of Gaseous
Pollutants
A.1 Test conditions
The test shall be carried out as per the requirements stipulated in 6.1 of GB/T 18801- 2015 and the following conditions.
a) The test shall be carried out in a laboratory with ambient temperature of (25??2) ??C, relative humidity of (50??10) %; no external airflow, no strong sunlight or other radiation effects; the concentration of the particle matter and chemical gaseous pollutants shall meet the requirements of GB/T 18883-2002;
b) The test power supply shall be a single-phase AC sine wave with test voltage of 220V, frequency of 50Hz; the voltage and frequency fluctuation range shall not exceed ??1% of the rated value.
A.2 Test equipment and instrument
A.2.1 Preparation
Inspect the test equipment, instrument and recording equipment before the test; ensure that they are in normal working condition. The test equipment and instrument shall be regularly calibrated.
A.2.2 Test equipment
The test-used 30m3 chamber shall meet the following requirements stipulated in Appendix A of GB/T 18801-2005 such as internal chamber dimension, frame, wall, floor, roof, sealing material, mixing fan, circulation fan, and airtightness; and meet the requirement that after the test chamber is sealed for 2h, the concentration of gaseous pollutants (such as formaldehyde, and toluene, etc.) shall not exceed 20% of the corresponding standard values specified in GB/T 18883-2002.
A.2.3 Test instrument
The test instrument includes temperature and humidity meter, chronograph, power tester, spectrophotometer, gas chromatograph, online gaseous pollutant concentration tester, etc.; thereof, the gas chromatograph shall be equipped with hydrogen flame ionization detector; the online gaseous pollutant concentration tester shall satisfy the chamber shall be controlled within the range of (10??1) times of the corresponding concentration limit value specified in GB/T 18883-2002.
If performing the purification efficiency test of non-characteristic gaseous pollutants, the initial concentration shall be controlled within the range of (10??1) times of the corresponding indoor air quality control standard limit value of the reference. A.4 Test method
A.4.1 Basic requirements
The test shall be carried out continuously in the following procedure and shall be finished in the shortest as much as possible. The whole test procedures hall be recorded well, including the test date, time, ambient temperature and humidity condition, background value and actually-measured value of gaseous concentration in the test chamber.
A.4.2 Pre-running
Follow the steps below to pre-run the air cleaner under test.
a) Open the package of the air cleaner under test; confirm that the whole machine state, filter installation, and various functions of it required by the instruction manual are normal;
b) Adjust the air cleaner under test into a rated state to run at least 60min under the test conditions satisfying the provisions of A.1;
c) According to the provisions of A.4.3.2b) ~ A.4.3.2c), place the air cleaner into the test chamber then take it out; stand for 24h in the laboratory for test. No sampling is required, during this period, to analyze the concentration of the gaseous pollutant.
A.4.3 Test procedure
A.4.3.1 Natural attenuation test of gaseous pollutants
Follow the steps below to perform the natural attenuation test of gaseous pollutants. a) Turn on the mixing fan and start the test instrument to monitor the test conditions in the test chamber. When the monitoring data conforms to the provisions of A.1, turn off the mixing fan; continuously monitor for 10min; confirm that the data doesn?€?t rebound; and record the ambient temperature and humidity, background concentration, etc.;
b) The generation of gaseous pollutants in the test chamber shall be carried out as follows.
cleaner to the rated state, start the test. During the test, perform sampling once every 5min; record which separately as t5, t10, t15 ... tn, tn+5, tn+10, tn+15, tn+20; the corresponding actually-measured gaseous pollutant concentrations shall be recorded separately as C5, C10, C15 ... Cn, Cn+5, Cn+10, Cn+15, Cn+20. tn is the closest epitaxial time point calculated by Formula (A.5) at the equivalent test time, T; and Cn is the gaseous pollutant concentration at tn. The total test time shall be no longer than 180min;
d) Turn off the air cleaner; record the temperature and relative humidity in the laboratory; which shall meet the requirements of A.1;
e) Calculate the concentration of gaseous pollutants in air cleaner at the equivalent test time as per A.5.2.1; calculate the purification efficiency of gaseous pollutants, Q, as per Formula (A.8).
A.5 Calculation
A.5.1 Derivation and calculation at equivalent test time
A.5.1.1 Derivation at equivalent test time
In the test method for purification efficiency of gaseous pollutants, the equivalent test time is particularly important as the core parameter affecting the test results. The following is a description of the derivation process of the equivalent test time. a) Under ideal conditions (regardless of factors such as concentration diffusion uniformity and actual air exchange ratio, etc.), the purification efficiency of air cleaner against the gaseous pollutants shall be determined by the number of air cycles in the space of use. If the actually-running time is specified as 1h, then obtain the Formula (A.1).
Where.
n ?€? the number of air cycles, in times;
1 ?€? 1 hour, in h;
Q ?€?flow rate of air cleaner, in m3/h;
VA ?€? use space of air cleaner, in m3.
b) When the initial concentration of gaseous pollutants in the actual use environment of the air cleaner is the same as the initial concentration in the test chamber during the test; obtain the purification efficiency of the gaseous

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