CN106560689A - Testing system and method for mass-concentration particulate purifying efficiency of vehicle-mounted external-circulation type air purifier - Google Patents
Testing system and method for mass-concentration particulate purifying efficiency of vehicle-mounted external-circulation type air purifier Download PDFInfo
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- CN106560689A CN106560689A CN201610871066.7A CN201610871066A CN106560689A CN 106560689 A CN106560689 A CN 106560689A CN 201610871066 A CN201610871066 A CN 201610871066A CN 106560689 A CN106560689 A CN 106560689A
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- 238000012360 testing method Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000002245 particle Substances 0.000 claims abstract description 23
- 238000001228 spectrum Methods 0.000 claims abstract description 4
- 239000013618 particulate matter Substances 0.000 claims description 36
- 238000000746 purification Methods 0.000 claims description 26
- 239000000779 smoke Substances 0.000 claims description 22
- 239000000443 aerosol Substances 0.000 claims description 19
- 238000002474 experimental method Methods 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 10
- 238000005070 sampling Methods 0.000 claims description 8
- 238000004887 air purification Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims 1
- 238000004458 analytical method Methods 0.000 abstract description 5
- 238000004364 calculation method Methods 0.000 abstract description 2
- 239000010419 fine particle Substances 0.000 description 5
- 238000003915 air pollution Methods 0.000 description 3
- 238000004581 coalescence Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 239000011859 microparticle Substances 0.000 description 3
- 230000008021 deposition Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 230000010076 replication Effects 0.000 description 2
- 241001593519 Liza affinis Species 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N2015/084—Testing filters
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Abstract
The invention discloses a testing system and analysis method for the mass-concentration particulate purifying efficiency of a vehicle-mounted external-circulation type air purifier. The testing system mainly comprises a smog generator, a smog generation box, an air conditioner, a hybrid fan, a tester for ambient temperature and humidity and pressure, an air purifier, a connection pipeline 1, a valve, a connection pipeline 2, a flow control valve, a vacuum pump and two sets of particulate mass particle-size spectrum tester. The method comprises the following steps: testing the mass concentrations and particle-size spectra of particulates entering and exiting from two ends of the air purifier; and calculating the purifying efficiency of particulates with different particle sizes by using a purifying efficiency formula. The system provided by the invention is intelligible and intact; the calculation and analysis method is correct and reasonable; and the system and method can be used for determining the mass-concentration particulate purifying efficiency of the vehicle-mounted external-circulation type air purifier.
Description
Technical field
The present invention relates to a kind of air pollutants purification efficiency test device and method, and in particular to a kind of vehicle air is net
Change the test system and analysis method of device particulate matter quality concentration purification efficiency.
Background technology
As the quickening of China's industrialization and urbanization process, road air pollution are increasingly serious, become impact traffic and go out
The stealthy killer of row health of people.The disease of the mankind 68% is relevant with air pollution, and the World Health Organization is room air pollution
It is classified as first of 18 class carcinogens.20 cities of global pollution most serious, have 16 in China.With people's environmental consciousness
Strengthen and growth in the living standard, importance of the clean air to health of human body is recognized all the more.
At present in China, the pollution of aerosol particle thing is the primary pollutant of majority cities.People are according to particle
Produce and particle is divided three classes in human respiratory tract's deposition position：Ultrafine dust (0.1 μm of particle diameter ＜), fine grained
PM2.5 (2.5 μm of particle diameter ＜), coarse granule PM10 (10 μm of particle diameter ＜).Combustion Source PM2.5 and non-immediate life mostly
Into, but be transformed through coalescence and a series of reaction of Atmospheric Chemistries by ultrafine dust.
, with big particulate because particle diameter difference reaches the order of magnitude, its mechanical mechanism difference is also very big, this point for fine particles
Also the test analysis of its purification efficiency are had influence on.Fine particles shared mass ratio in Atmospheric particulates is not high, but fine particles
Quantity it is very many.Fine particles occur simultaneously in discharge and transmitting procedure, often newborn particle generate, deposition, coalescence with
And dilution diffusion etc. phenomenon.But wherein, although the coalescence of particulate reduces particle number, but does not directly influence the matter of particulate
Amount.Therefore when carrying out purification efficiency and testing, should there are different tester and method.
The air purifier testing standard of China《GBT 18801-2015》Just for more than 0.3 μm particulate matter, and it is real
On border, sub-micron, ultrafine dust (0.1 μm of ＜) or even nanoparticle (＜ 50nm) occupy most of ratio of particulate matter quantity.
Therefore, vehicular air purifier is carried out to the filter efficiency of aerosol fine particles quantifying test and analysis, is not only and assesses it
The important evidence of performance indications, and compensate for the deficiency of current national standard.In addition, outer circulation type vehicular air purifier is logical
Often install with on-board air conditioner cartridge combination, therefore the present invention is also specifically designed for this mode and is designed.
The content of the invention
The purpose of the present invention designs a kind of outer circulation type vehicular air purifier particulate matter quality concentration purification efficiency test
System and method, concrete technical scheme is as follows：
A kind of outer circulation type vehicular air purifier particulate matter quality concentration purification efficiency test system, mainly including smog
Generator, smoke creating case, air regulator, exhaust fan, ambient temperature and humidity and pressure tester, air purifier, connection
Pipeline 1, valve, connecting pipe 2, flow control valve, vavuum pump, particulate matter quality Size tester 1, sampling conduit 1, electricity
Brain 1, communication cable 1, particulate matter quality Size tester 2, sampling conduit 2, computer 2, communication cable 2.Aerosol producer exists
Smog occurs to produce certain density particulate matter in casing, and the temperature humidity in smog box body is by air regulator control, smog
By vavuum pump suction connection road, then through air purifier purified treatment；Two microparticle mass concentration testers pass through respectively
Sampling conduit is connected to the import and export of air purifier and is tested；Ambient temperature and humidity and pressure tester are placed on inspection in casing
Temperature, humidity and pressure in measuring tank body.
The present invention generates polydisperse aerosol particles by aerosol producer, aerosol particles generation quantity number by
Aerosol producer is controlled and monitored by particulate matter quality Size tester, and particulate matter quality Size tester can provide band
The mass concentration data of the particulate matter of particle size resolution.
Vavuum pump carries traffic monitoring, and air quantity is adjustable according to air quantity of vehicular air-conditioner size.
The filter efficiency of the HEPA for filtering the particulate matter entered in the air of smoke creating casing be 99.99% with
On.
The purpose of the present invention is achieved through the following technical solutions：1) require to connect system according to accompanying drawing；
2) aerosol producer is opened, while start exhaust fan, when the smokescope in smoke creating casing reaches one
Original state, opens pipeline valve, opens vavuum pump, flow is adjusted to automobile outer circulation metered flow shape using control valve
State, open air purifier, while start particulate matter quality Size tester, per 2min determine record admission line in
Grain thing concentration data, METHOD FOR CONTINUOUS DETERMINATION 20min, after initial concentration is stable, the temperature and relative humidity during record test, prepare into
Row purification efficiency is tested.
3) purification efficiency experiment, after initial concentration is stable, every 2min the particulate matter at air purifier two ends is recorded
Amount concentration data and mass size modal data, continuously record 5 groups of data.Then repeat step 2, initial concentration is adjusted in addition
One son, repeats 5 purification efficiency experiments.
Aerosol producer is closed, clarifier is closed, vavuum pump is closed, each valve is closed, in record smoke creating casing
Temperature and relative humidity.
The air purification efficiency of different-grain diameter section is calculated by formula below.
Above in formula, η is purification efficiency, dimensionless；Subscript i is particle diameter segment labeling, and C is microparticle mass concentration, unit
kg/m3, subscript out represent through air purifier purification after, subscript in represent inflow air purifier before, j represents experiment
Number of replication.
The invention has the beneficial effects as follows：The invention provides a kind of particulate matter quality of automobile outer circulation air purifier is dense
The test device and computational methods of degree purification efficiency, it is certain dense by generating in smoke creating casing in aerosol producer first
The smog of degree, allows it with specified flow through air purifier, by the particulate matter of measuring and calculation air purifier both sides
Amount concentration, obtains the filter efficiency with particle size resolution.The test system for being provided and method of the present invention can be used for vehicle-mounted outer
The experiment test of circulating air purifier and performance evaluation.
Description of the drawings
Fig. 1 is test system structure schematic diagram.
1 smoke creating case, 2 air regulators, 3 smog, 4 aerosol producers, 5 valves, 6 connecting pipes 1,7 air in figure
Clarifier, 8 connecting pipes 2,9 flow control valves, 10 vavuum pumps, 11 exhaust fans, 12 ambient temperature and humidities and pressure tester,
13rd, HEPA, 14 sampling conduits 1,15 particulate matter quality Size testers 1,16 communication cables 1,17 computers 1,18 sampling conduits
2nd, 19 particulate matter quality Size testers 2,20 communication cables 2,21 computers 2.
Specific embodiment
Below in conjunction with the accompanying drawings, the present invention is further illustrated with embodiment.But this embodiment is merely illustrative, this
Bright protection domain is not limited by this embodiment.
As shown in figure 1, a kind of outer circulation type vehicular air purifier particulate matter quality concentration purification efficiency test of the invention
System and method mainly includes 1 smoke creating case, 2 air regulators, 3 smog, 4 aerosol producers, 5 valves, 6 connecting tubes in figure
Road 1,7 air purifiers, 8 connecting pipes 2,9 flow control valves, 10 vavuum pumps, 11 exhaust fans, 12 ambient temperature and humidities and pressure
Force tester, 13, HEPA, 14 sampling conduits 1,15 particulate matter quality Size testers 1,16 communication cables 1,17 computers 1,18
Sampling conduit 2,19 particulate matter quality Size testers 2,20 communication cables 2,21 computers 2.Aerosol producer 4 is placed on smog
The bottom center of case 1 is generated, smog 3 is discharged；Smoke creating case 1 is used to adjust temperature and humidity built with air regulator 2, and
It is monitored by ambient temperature and humidity and pressure tester 12；The top of smoke creating case 1 lifting exhaust fan 11；Smoke creating case
External air is after the process of HEPA filters 13 by entering；Smog in smoke creating case 1 is by connecting pipe 6 and valve 5
Air inlet clarifier 7；Aspirator vacuum pump 10 connects air purifier 7 by control valve 9 and connecting pipe 8；Two particles
Amount of substance Size tester is connected respectively to pipeline 6 and 8 and carries out particulate matter quality concentration and mass size spectrum test, and difference
Computer 1 is uploaded data to by communication cable 16 and 20 and computer 2 is recorded.
The present invention know-why be：The particulate matter quality for entering and leaving air purifier both sides by direct measurement is dense
Degree, and mass size modal data is measured, the purification efficiency of each particle diameter section is calculated by formula (1).In design test system
When by installing exhaust fan 11 so that the smog in smoke creating case 1 is uniformly distributed, and will by installing HEPA filters 13
The particulate matter of external environment is filtered, and can so exclude the interference of extraneous particulate matter.
The operating procedure of the present invention is as follows：
1) require to connect system according to accompanying drawing, by valve 5 and the grey mullet closed mode valve of flow control valve 9；
2) aerosol producer 4 is opened, while start exhaust fan 11, when the smokescope in smoke creating case 1 reaches one
Individual original state, opens pipeline valve 1, opens vavuum pump 10, flow is adjusted to automobile outer circulation using flow control valve 9
Metered flow state, opens air purifier 7, while starting particulate matter quality Size tester 15 and 19, determines per 2min
Particle concentration data in record admission line, METHOD FOR CONTINUOUS DETERMINATION 20min, temperature after initial concentration is stable, during record test
Degree and relative humidity, are ready for purification efficiency experiment.
3) purification efficiency experiment, after initial concentration is stable, every 2min the particulate matter at air purifier two ends is recorded
Amount concentration data and mass size modal data, continuously record 5 groups of data.Then repeat step 2, initial concentration is adjusted in addition
One value, repeats 5 purification efficiency experiments.
Aerosol producer 4 is closed, air purifier 7 is closed, vavuum pump 10 is closed, valve 5 and flow control valve is closed
9, the temperature and relative humidity in smoke creating case 1 is recorded by ambient temperature and humidity and pressure tester 12.
The air purification efficiency of different-grain diameter section is calculated by formula below.
Above in formula, η is purification efficiency, dimensionless；Subscript i is particle diameter segment labeling, and C is microparticle mass concentration, unit
kg/m3, subscript out represent through air purifier purification after, subscript in represent inflow air purifier before, j represents experiment
Number of replication.
Claims (3)
1. a kind of outer circulation type vehicular air purifier particulate matter quality concentration purification efficiency test system and method, mainly include
1 smoke creating case, 2 air regulators, 3 smog, 4 aerosol producers, 5 valves, 6 connecting pipes 1,7 air purifiers, 8 connections
Pipeline 2,9 flow control valves, 10 vavuum pumps, 11 exhaust fans, 12 ambient temperature and humidities and pressure tester, 13, HEPA, 14 are adopted
Sample pipeline 1,15 particulate matter quality Size testers 1,16 communication cables 1,17 computers 1,18 sampling conduits 2,19 particulate matters
Amount Size tester 2,20 communication cables 2,21 computers 2.Aerosol producer 4 is placed on the bottom center of smoke creating case 1, release
Go out smog 3；Smoke creating case 1 is used to adjust temperature and humidity built with air regulator 2, and by ambient temperature and humidity and pressure
Tester 12 is monitored；The top of smoke creating case 1 lifting exhaust fan 11；The outer air of smoke creating casing is filtered through HEPA
By entering after the process of device 13；Smog in smoke creating case 1 is by connecting pipe 6 and the air inlet clarifier 7 of valve 5；Pumping
Vavuum pump 10 connects air purifier 7 by control valve 9 and connecting pipe 8；Two particulate matter quality Size testers point
Not being connected to pipeline 6 and 8 carries out particulate matter quality concentration and mass size spectrum test, and respectively by communication cable 16 and 20
Pass data to be recorded to computer 1 and computer 2.
2. test device of the invention according to claim 1, it is characterised in that：Air is entered and left by direct measurement
The particulate matter quality concentration of clarifier both sides, and particle diameter modal data is measured, the purification of each particle diameter section is calculated by formula (1)
Efficiency.
3. a kind of outer circulation type vehicular air purifier particulate matter quality concentration purification efficiency test system and method, its feature exists
In comprising the steps：
1) require to connect system according to accompanying drawing, valve 5 and flow control valve 9 are placed in off；
2) aerosol producer 4 is opened, while start exhaust fan 11, at the beginning of the smokescope in smoke creating case 1 reaches one
Beginning state, opens pipeline valve 1, opens vavuum pump 10, and flow is adjusted into specified to automobile outer circulation using flow control valve 9
Flow status, open air purifier 7, while starting particulate matter quality Size tester 15 and 19, record are determined per 2min
Particle concentration data in admission line, METHOD FOR CONTINUOUS DETERMINATION 20min, after initial concentration is stable, temperature during record test and
Relative humidity, is ready for purification efficiency experiment.
3) purification efficiency experiment, after initial concentration is stable, the particulate matter quality for recording air purifier two ends every 2min is dense
Degrees of data and particle diameter modal data, continuously record 5 groups of data.Then repeat step 2, initial concentration is adjusted to another value,
Repeat 5 purification efficiency experiments.
4) aerosol producer 4 is closed, closes air purifier 7, close vavuum pump 10, close valve 5 and flow control valve 9,
The temperature and relative humidity in smoke creating case 1 is recorded by ambient temperature and humidity and pressure tester 12.
5) air purification efficiency of different-grain diameter section is calculated by formula (1).
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| CN201610871066.7A CN106560689A (en) | 2016-09-29 | 2016-09-29 | Testing system and method for mass-concentration particulate purifying efficiency of vehicle-mounted external-circulation type air purifier |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727541A (en) * | 2017-10-31 | 2018-02-23 | 中国石油大学(北京) | Aerosol monitoring device and method and pipe-line system in pipeline |
| CN111735750A (en) * | 2020-07-31 | 2020-10-02 | 北京核信锐视安全技术有限公司 | Device and method for detecting purification efficiency of aerosol protective equipment |
| CN112179816A (en) * | 2020-10-12 | 2021-01-05 | 杭州西非电子信息技术有限公司 | Flue gas particle monitoring and processing device for factory chimney emission |
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