QC/T 1091-2023 PDF English
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Air Cleaner for Passenger coach
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| QC/T 1091-2017 | English | 639 |
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(Technical conditions for air purification equipment for passenger cars)
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QC/T 1091-2023: PDF in English (QCT 1091-2023) QC/T 1091-2023
QC
AUTOMOBILE INDUSTRY STANDARD
ICS 43.080.20
CCS T 42
Replacing QC/T 1091-2017
Air cleaner for bus
ISSUED ON. DECEMBER 20, 2023
IMPLEMENTED ON. JULY 01, 2024
Issued by. Ministry of Industry and Information Technology of the PRC
Table of Contents
Foreword... 7
1 Scope... 9
2 Normative references... 9
3 Terms and definitions... 10
4 General requirements... 12
5 Purification requirements... 13
6 Test method... 14
7 Inspection rules... 19
8 Marking, packaging, transportation, storage... 20
Appendix A (Informative) Test chamber... 23
Appendix B (Normative) Calculation method of decay constant... 26
Appendix C (Normative) Determination of volatile organic compounds - Gas
chromatography mass spectrometry... 28
References... 34
Air cleaner for bus
1 Scope
This document specifies the general requirements, purification requirements, test
methods, inspection rules and marking, packaging, transportation and storage of air
cleaner for bus.
This document is applicable to air cleaners installed in categories M2 and M3 buses.
Other vehicles can refer to it.
2 Normative references
The contents of the following documents constitute the essential terms of this document
through normative references in the text. Among them, for dated references, only the
version corresponding to that date is applicable to this document; for undated references,
the latest version (including all amendments) is applicable to this document.
GB/T 191 Packaging - Pictorial marking for handling of goods
GB/T 13306 Plates
GB/T 13554 High efficiency particulate air filter
GB/T 14295 Air filter
GB/T 15089 Classification of power-driven vehicles and trailers
GB/T 21087-2020 Energy recovery ventilators for outdoor air handling
GB 21551.3-2010 Antibacterial and cleaning function for household and similar
electrical appliances - Particular requirements of air cleaner
GB/T 30512 Requirements for prohibited substances on automobiles
GB 34660 Road vehicles - Requirements and test methods of electromagnetic
compatibility
GB 38262 Flammability of interior materials for buses
HJ/T 400-2007 Determination of volatile organic compounds and carbonyl
compounds in cabin vehicles
4 General requirements
4.1 Basic requirements
4.1.1 The rated voltage of the air cleaner for bus (hereinafter referred to as the "air
cleaner") shall be DC 12 V or DC 24 V.
4.1.2 The air cleaner shall be safe and odor-free.
4.1.3 The air cleaner shall be cleanable; the replaceable parts shall be easy to
disassemble and assemble.
4.1.4 The surface of the air cleaner shall be smooth and flat, without scratches, rust
spots, indentations, damage. The spray layer shall be uniform, without flow marks,
bubbles, peeling.
4.1.5 The parts shall be tight and not loose. The filter material, separator, protective net
and other parts shall not be deformed; the sealing gasket shall not be loose.
4.1.6 The outer shell of the air cleaner shall be marked with electrical safety warning
signs.
4.1.7 The materials used in the air cleaner shall meet the requirements for prohibited
substances in GB/T 30512.
4.2 Performance requirements
4.2.1 The air filter in the air cleaner shall comply with the relevant provisions of GB/T
14295 and GB/T 13554.
4.2.2 The combustion characteristics of non-metallic materials in the air cleaner shall
comply with the relevant provisions of GB 38262.
4.2.3 The basic technical requirements of air cleaners shall comply with the relevant
provisions of QC/T 413.
4.2.4 The electromagnetic compatibility of air cleaners shall comply with the relevant
provisions of GB 34660.
4.3 Rated power
The rated power of air cleaners shall meet the following requirements.
a) For nominal values not exceeding 30 W, the test results shall not exceed 120% of
the nominal value;
b) For nominal values exceeding 30 W, the test results shall not exceed 110% of the
specify, the highest wind speed and maximum air outlet state shall prevail). After
normal operation, turn off the air cleaner.
b) Arrange a sampling point. The sampling point shall avoid the air inlet and outlet,
at a distance from the chamber wall of no less than 0.5 m and a distance from the
laboratory floor of 1.1 m ~ 1.3 m. The sampling point is connected to the sampler
outside the test chamber through a pipeline.
c) Turn on the air filter to purify the air in the test chamber; start the temperature and
humidity control device at the same time, to make the temperature and relative
humidity of the test chamber reach the specified state.
d) After the temperature and relative humidity in the test chamber reach the specified
state, turn off the air filter and temperature and humidity control device; turn on
the stirring fan and circulation fan.
e) Put the cigarette (tar content is 8 mg ~ 11 mg) into the cigarette burner; connect
the burner to the low-pressure air source; connect the smoke outlet of the burner
to a pipe that passes through the test chamber wall. Light the cigarette; cover the
burner; after burning for a period of time, close the valve of the smoke delivery
pipe; run the stirring fan for another 10 minutes, to mix the particulate pollutants
evenly.
f) After the stirring fan stops rotating, record the initial concentration C0, which shall
be within the initial concentration range specified in Table 1, corresponding to t
= 0 min. Turn on the air cleaner to be tested at the same time. After that, measure
and record the concentration of particulate matter every 10 minutes. Measure
continuously for 60 minutes.
g) Calculate the total decay constant ke of particulate matter in accordance with the
provisions of Appendix B; calculate the correlation coefficient R2, requiring R2 ≥
0.98.
6.8.4 Calculation
6.8.4.1 Calculation of clean air delivery rate
The clean air delivery rate is calculated according to formula (2).
Where.
Qj - Clean air delivery rate, in cubic meters per hour (m3/h);
ke - Total decay constant, in minus one power (min-1);
c) Sampling pump, calibrated with a primary flow meter to ensure that the flow
deviation before and after sampling does not exceed 5%;
d) Sampling tank, which is a stainless steel tank with an inert inner wall.
6.9.3 Test steps
6.9.3.1 Test run
The test run steps of the air cleaner shall be carried out in accordance with 6.8.3.1.
6.9.3.2 Total decay test of gaseous pollutants
The total decay test of gaseous pollutants shall be carried out in accordance with the
following steps.
a) The adjustment of the air cleaner, the arrangement of sampling points, the
determination of record files, the setting of the cabin environment shall be carried
out in accordance with a) ~ d) in 6.8.3.2.
b) Connect the gaseous pollutant generator to a pipe that passes through the test cabin
wall, so that the generated gaseous pollutants enter the test chamber through the
pipe. After the generated gaseous pollutants are delivered for a period of time,
turn off the generator. Run the stirring fan for another 10 minutes, to mix the
gaseous pollutants evenly; then turn off the stirring fan.
c) After the stirring fan stops rotating, collect the gaseous pollutants in the test
chamber. The initial concentration of the gaseous pollutants is C0, which shall be
within the initial concentration range specified in Table 1.
d) The initial concentration in the test chamber is collected, corresponding to t = 0
min; the air cleaner to be tested is turned on at the same time; sampling is carried
out according to the corresponding time in Table 3.
e) Gaseous pollutant collection method. Carry out sampling by sampling tank or
adsorption tube (TENAX TA and DNPH).
Note 1.The sampling analysis method by sampling tank is shown in Appendix C;
Note 2.When TENAX TA is sampled and analyzed by thermal desorption gas
chromatography-mass spectrometry for toluene, xylene, total volatile organic compound
concentrations, the recommended sampling flow rate is 100 mL/min ~ 200 mL/min; the
sampling time is 10 min; the analysis method is shown in Appendix B of HJ/T 400-2007.
Note 3.When DNPH is sampled and analyzed by liquid chromatography for
formaldehyde concentration, the recommended sampling flow rate is 500 mL/min ~ 800
mL/min; the sampling time is 10 min; the analysis method is shown in Appendix C of
HJ/T 400-2007.
c) Basic performance parameters (external dimensions, rated air flow, rated voltage,
rated power, cleaning energy efficiency, noise, etc.);
d) Exit-factory date and exit-factory number.
8.2 Packaging
8.2.1 Air cleaners shall be packaged in accordance with the relevant provisions of GB/T
191.
8.2.2 The packaging box shall be accompanied by a product certificate and installation
and use instructions.
8.2.3 The content of the product certificate shall at least include.
a) Product name and model;
b) Product exit-factory number;
c) Inspection conclusion;
d) Inspector signature or seal;
e) Inspection date.
8.2.4 The contents of the product installation and use manual shall at least include.
a) Product name and model;
b) Working principle;
c) Implementation standards
d) Main technical parameters;
e) Catalog of accessories;
f) Installation instructions and requirements
g) Instructions for use, repair and maintenance precautions.
8.3 Transportation
The air cleaner shall not be bumped, squeezed, thrown, subjected to strong vibration,
rain, moisture and exposure to the sun during transportation.
8.4 Storage
The air cleaner shall be stored in a dry, ventilated warehouse without corrosive and
The test method of mixing degree shall use toluene as the tracer gas; it shall be carried
out according to the following steps.
a) Arrange sampling points at 5 positions in front, back, left, right, center of the test
chamber; avoid the air inlet and outlet; the distance from the wall shall be not less
than 0.5 m, the height relative to the test chamber floor shall be 1.1 m ~ 1.3 m.
b) Turn on the air filter to purify the air in the test chamber, so that the background
concentration of toluene of gaseous pollutants in the test chamber is ≤ 0.02 mg/m3;
start the temperature and humidity control device at the same time, to make the
indoor temperature and relative humidity reach the specified state (A.3
requirements).
c) After the temperature and relative humidity in the test chamber reach the specified
state, record the background concentration of gaseous pollutants; turn off the air
filter and temperature and humidity control device; turn on the stirring fan and
circulation fan.
d) Connect the gaseous pollutant generator to a pipe that passes through the test
chamber wall. The generated pollutants can be drawn into the air vortex formed
by the stirring fan. After a period of delivery, turn off the generator. The stirring
fan stirs for another 10 minutes, to mix the gaseous pollutants evenly.
e) After the stirring fan stops rotating, use a sampling tank to collect the pollutant
gas in the test chamber. Refer to Appendix C to analyze the gaseous pollutant
concentration at 5 locations.
Note. When using thermal desorption gas chromatography-mass spectrometry to
analyze toluene, the recommended sampling flow rate is 100 mL/min and the sampling
time is 10 minutes. For the analysis method, refer to Appendix B in HJ/T 400-2007.
f) Calculate the relative standard deviation of the toluene concentration at 5 locations.
A.5 Schematic diagram of test chamber
Appendix C
(Normative)
Determination of volatile organic compounds - Gas chromatography mass
spectrometry
C.1 Scope
This Appendix specifies the test method for determining the concentration of volatile
organic compounds (toluene, xylene, total volatile organic compounds).
C.2 Principle of the method
Ambient air samples are collected using a sampling tank which has an inert inner wall.
After cold trap concentration and thermal analysis, they enter the gas chromatography
separation and are detected by a mass spectrometer. Qualitative analysis is performed
by comparing the mass spectrum and retention time with the standard substance;
quantitative analysis is performed by the external standard method.
C.3 Reagents and materials
C.3.1 Standard gas
Standard gas with a concentration of 10 nmol/mol toluene, m-xylene, p-xylene, o-
xylene, n-hexane, n-hexadecane can also be configured with standard solutions to
obtain standard gas of the same concentration.
C.3.2 Helium
Concentration ≥ 99.999%.
C.3.3 High-purity nitrogen
Concentration ≥ 99.999%.
C.4 Instruments and equipment
Sampling includes the following instruments and equipment.
a) Gas chromatograph-mass spectrometer;
b) Capillary column;
c) Gas cold trap concentrator;
d) Concentrator automatic sampler;
e) Tank cleaning device
f) Gas dilution device;
g) Sampling tank;
h) Flow controller;
i) Calibrated flow meter;
j) Vacuum pressure gauge;
k) Filter.
C.5 Sample
C.5.1 Preparation before sampling
Tank cleaning. Use the tank cleaning device to clean the sampling tank. The cleaning
process can be operated according to the instructions of the tank cleaning device.
During the cleaning process, the sampling tank can be humidified to reduce the active
adsorption of the tank. If necessary, the sampling tank can be heated and cleaned at
50 °C ~ 80 °C. After cleaning, the sampling tank is vacuumed (< 10 Pa), to prepare for
use.
For every 20 sampling tanks cleaned, at least one tank shall be injected with high-purity
nitrogen for analysis, to determine whether the cleaning process is clean. Each vacuum
tank of a high-concentration sample to be tested shall be analyzed for background
contamination after cleaning and before the next use.
C.5.2 Sample collection
Sample collection uses instantaneous sampling. Bring the cleaned and vacuumed
sampling tank to the sampling point; connect the sampling catheter; open the sampling
valve; start sampling. When the pressure in the tank is consistent with the atmospheric
pressure at the sampling point, close the valve and seal it with a sealing cap. Record the
sampling time, temperature, relative humidity, atmospheric pressure.
C.5.3 Sample preservation
The samples are stored at room temperature and shall be analyzed as soon as possible
after sampling. The samples shall not be stored for more than 20 days.
C.5.4 Sample preparation
Before the actual sample analysis, the pressure in the tank needs to be measured using
a vacuum pressure gauge. If the tank pressure is less than 83 kPa, it must be pressurized
to 101 kPa with high-purity nitrogen; the dilution factor is calculated according to
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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