RU2017124315A - A device for measuring the size spectrum of aerosol particles and a method for measuring the size spectrum of aerosol particles - Google Patents

A device for measuring the size spectrum of aerosol particles and a method for measuring the size spectrum of aerosol particles Download PDF

Info

Publication number
RU2017124315A
RU2017124315A RU2017124315A RU2017124315A RU2017124315A RU 2017124315 A RU2017124315 A RU 2017124315A RU 2017124315 A RU2017124315 A RU 2017124315A RU 2017124315 A RU2017124315 A RU 2017124315A RU 2017124315 A RU2017124315 A RU 2017124315A
Authority
RU
Russia
Prior art keywords
particles
section
fraction
aerosol
grids
Prior art date
Application number
RU2017124315A
Other languages
Russian (ru)
Other versions
RU2680661C2 (en
RU2017124315A3 (en
Inventor
Анатолий Максимович Бакланов
Сергей Владимирович Валиулин
Сергей Николаевич Дубцов
Владимир Геннадьевич Митроченко
Петр Петрович Моисеенко
Андрей Александрович Онищук
Original Assignee
Общество с ограниченной ответственностью "Аэрозольные приборы"
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Общество с ограниченной ответственностью "Аэрозольные приборы" filed Critical Общество с ограниченной ответственностью "Аэрозольные приборы"
Priority to RU2017124315A priority Critical patent/RU2680661C2/en
Publication of RU2017124315A publication Critical patent/RU2017124315A/en
Publication of RU2017124315A3 publication Critical patent/RU2017124315A3/ru
Application granted granted Critical
Publication of RU2680661C2 publication Critical patent/RU2680661C2/en

Links

Classifications

    • 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
    • G01N15/02—Investigating particle size or size distribution
    • 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
    • G01N15/02—Investigating particle size or size distribution
    • G01N15/0205—Investigating particle size or size distribution by optical means

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Sampling And Sample Adjustment (AREA)

Claims (6)

1. Устройство измерения спектра размеров аэрозольных частиц, включающее диффузионную батарею (ДБ), состоящую из ряда последовательных секций, заполненных сетками, состоящими, например, из металлических или полимерных волокон, на которые осаждаются аэрозольные частицы при прохождении аэрозольного потока через батарею, конденсационный укрупнитель частиц, оптический счетчик частиц и персональный компьютер для управления устройством в целом, накапливания и обработки полученных данных, отличающееся тем, что количество установленных сеток в каждой секции диффузионной батареи, за исключением первой, равно суммарному числу сеток во всех предыдущих секциях, расположенных выше по потоку, что позволяет осуществить расчет среднего диаметра частиц Di, осажденных в i-й секции ДБ, по математической формуле1. A device for measuring the size spectrum of aerosol particles, including a diffusion battery (DB), consisting of a series of successive sections filled with grids consisting, for example, of metal or polymer fibers onto which aerosol particles are deposited when the aerosol stream passes through the battery, a condensing particle enlarger , an optical particle counter and a personal computer for controlling the device as a whole, accumulating and processing the received data, characterized in that the number of installed grids in each section of the diffusion battery, with the exception of the first one, it is equal to the total number of grids in all previous sections located upstream, which allows calculating the average particle diameter D i deposited in the i-th section of the DB, according to the mathematical formula
Figure 00000001
,
Figure 00000001
, где i - последовательный номер секции, ni и ni+1 - количества сеток в секциях с номерами i и i+1 соответственно, gi - доля частиц, прошедших через i-ю секцию без осаждения, μi - эффективность осаждения на одиночном волокне в пакете, содержащем ni+ni+1 сеток, для частиц, содержащихся в потоке после i-й секции,
Figure 00000002
, h - толщина сетки, r - радиус волокна сетки, α - отношение объема, занимаемого волокнами, к полному объему сетки,
Figure 00000003
, U0 - линейная скорость аэрозольного потока.where i is the sequence number of the section, n i and n i + 1 are the number of grids in the sections with numbers i and i + 1, respectively, g i is the fraction of particles passing through the i-th section without deposition, μ i is the deposition efficiency on a single fiber in a packet containing n i + n i + 1 nets for particles contained in the stream after the i-th section,
Figure 00000002
, h is the thickness of the mesh, r is the radius of the fiber of the mesh, α is the ratio of the volume occupied by the fibers to the total volume of the mesh,
Figure 00000003
, U 0 is the linear velocity of the aerosol stream. 2. Способ измерения спектра размеров аэрозольных частиц путем последовательного пропускания аэрозольного потока через секции диффузионной батареи (ДБ), заполненные сетками, затем через конденсационный укрупнитель частиц, измерения аэрозольной концентрации оптическим счетчиком и компьютерной обработки данных, отличающийся тем, что определяют эффективность осаждения на отдельных волокнах сетки для фракций частиц, то есть для частиц, осевших в секциях диффузионной батареи, по формуле2. A method of measuring the size spectrum of aerosol particles by sequentially passing the aerosol stream through sections of a diffusion battery (DB) filled with grids, then through a condensing particle enlarger, measuring the aerosol concentration by an optical meter and computer processing of data, characterized in that they determine the deposition efficiency on individual fibers grids for fractions of particles, that is, for particles deposited in sections of a diffusion battery, according to the formula
Figure 00000004
Figure 00000004
 где i - последовательный номер секции ДБ или фракции частиц,
Figure 00000005
- эффективность осаждения i-й фракции на отдельном волокне i-й секции, ni и ni+1 - количества сеток в секциях с номерами i и i+1 соответственно, gi - доля частиц, прошедших через i-ю секцию, μi - эффективность осаждения на одиночном волокне в пакете, содержащем ni+ni+1 сеток, для частиц, содержащихся в потоке после i-й секции,
Figure 00000006
, h - толщина сетки, r - радиус волокна сетки, α - отношение объема, занимаемого волокнами, к полному объему сетки,
Figure 00000007
, U0 - линейная скорость аэрозольного потока, далее из величины
Figure 00000005
определяют средний диаметр Di частиц i-й фракции по формулам веерной модели фильтров Кирша-Стечкиной-Фукса, долю hi частиц i-й фракции определяют по формуле hi=gi-gi+1, спектр частиц i-й фракции аппроксимируют любой функцией мономодального распределения, включая логнормальное распределение, Гауссово распределение, причем Di и hi являются параметрами мономодального распределения, далее спектр исходного аэрозоля определяется как сумма спектров фракций.where i is the serial number of the DB section or particle fraction,
Figure 00000005
is the efficiency of deposition of the i-th fraction on a separate fiber of the i-th section, n i and n i + 1 are the number of grids in the sections with numbers i and i + 1, respectively, g i is the fraction of particles passing through the i-th section, μ i is the deposition efficiency on a single fiber in a packet containing n i + n i + 1 nets for particles contained in the stream after the i-th section,
Figure 00000006
, h is the thickness of the mesh, r is the radius of the fiber of the mesh, α is the ratio of the volume occupied by the fibers to the total volume of the mesh,
Figure 00000007
, U 0 - linear velocity of the aerosol stream, then from the value
Figure 00000005
determine the average diameter D i of particles of the i-th fraction using the formulas of the fan model of Kirsch-Stechkina-Fuchs filters, the fraction h i of particles of the i-th fraction is determined by the formula h i = g i -g i + 1 , the particle spectrum of the i-th fraction is approximated any function of the monomodal distribution, including the lognormal distribution, the Gaussian distribution, where D i and h i are the parameters of the monomodal distribution, then the spectrum of the initial aerosol is determined as the sum of the spectra of the fractions.
RU2017124315A 2017-07-07 2017-07-07 Device for measuring the spectrum of dimensions of aerosol particles and method of measuring the spectrum of dimensions of aerosol particles RU2680661C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2017124315A RU2680661C2 (en) 2017-07-07 2017-07-07 Device for measuring the spectrum of dimensions of aerosol particles and method of measuring the spectrum of dimensions of aerosol particles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2017124315A RU2680661C2 (en) 2017-07-07 2017-07-07 Device for measuring the spectrum of dimensions of aerosol particles and method of measuring the spectrum of dimensions of aerosol particles

Publications (3)

Publication Number Publication Date
RU2017124315A true RU2017124315A (en) 2019-01-09
RU2017124315A3 RU2017124315A3 (en) 2019-01-09
RU2680661C2 RU2680661C2 (en) 2019-02-25

Family

ID=64977446

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2017124315A RU2680661C2 (en) 2017-07-07 2017-07-07 Device for measuring the spectrum of dimensions of aerosol particles and method of measuring the spectrum of dimensions of aerosol particles

Country Status (1)

Country Link
RU (1) RU2680661C2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115356075A (en) * 2022-08-26 2022-11-18 西北核技术研究所 Method for measuring dry deposition speed of atmospheric boundary layer environment wind tunnel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4463595A (en) * 1983-02-16 1984-08-07 The United States Of America As Represented By The United States Department Of Energy Parallel flow diffusion battery
RU2340885C2 (en) * 2006-10-26 2008-12-10 Федеральное государственное унитарное предприятие "Научно-исследовательский физико-химический институт имени Л.Я. Карпова" Method of measuring spectrum of dimensions of condensation nuclei of aerosol particles and device to that end
RU2555353C1 (en) * 2014-03-04 2015-07-10 Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Профессионального Образования "Донской Государственный Технический Университет" (Дгту) Device to determine spectrum of size of suspended nanoparticles
RU2558281C1 (en) * 2014-03-04 2015-07-27 Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Профессионального Образования "Донской Государственный Технический Университет" (Дгту) Method for determining spectrum of sizes of suspended nanoparticles

Also Published As

Publication number Publication date
RU2680661C2 (en) 2019-02-25
RU2017124315A3 (en) 2019-01-09

Similar Documents

Publication Publication Date Title
Chiam et al. Particulate matter mitigation via plants: Understanding complex relationships with leaf traits
Hall Jr et al. Solute-specific scaling of inorganic nitrogen and phosphorus uptake in streams
Paull et al. Airborne particulate matter accumulation on common green wall plants
Fiala et al. The relationship between firm size and firm growth: the case of the Czech Republic
Rosti et al. Turbulence role in the fate of virus-containing droplets in violent expiratory events
Bernal et al. Surveillance system for risk and protective factors for chronic diseases by telephone survey (Vigitel): changes in weighting methodology
JP5480156B2 (en) Apparatus for characterizing the size distribution of charged suspended particles in air flow.
Giorio et al. Field comparison of a personal cascade impactor sampler, an optical particle counter and CEN-EU standard methods for PM10, PM2. 5 and PM1 measurement in urban environment
RU2017124315A (en) A device for measuring the size spectrum of aerosol particles and a method for measuring the size spectrum of aerosol particles
Flomenbom Dynamics of heterogeneous hard spheres in a file
CN110189165A (en) Channel abnormal user and abnormal channel recognition methods and device
Miki et al. Comparative efficiency of airborne pollen concentration evaluation in two pollen sampler designs related to impaction and changes in internal wind speed
CN111340606A (en) Full-process income auditing method and device
Ghoshal et al. Size distributions in suspension over sand–pebble mixture: an experimental approach
CN104090876B (en) The sorting technique of a kind of audio file and device
CN106815792A (en) A kind of method that the evacuating personnel time in building is calculated based on black box theory
CN114186118A (en) Network public opinion topic information processing system, method, storage medium and terminal
CN107576598B (en) Method for acquiring quality of atmospheric particulate matter and terminal
Guo et al. An experimental method for efficiently evaluating the size-resolved sampling efficiency of liquid-absorption aerosol samplers
CN109583720A (en) A kind of internet and mobile Internet application value model
Singh et al. Development of a variable configuration cascade impactor for aerosol size distribution measurement
Soedingrekso et al. Feasibility study to measure the muon bremsstrahlung cross section with the energy loss profile using neutrino telescopes
CN109784652A (en) Fund style drift degree determines method, apparatus, equipment and storage medium
McFarland et al. In-line impactor inlet for bioaerosol sampling
Ioannidou Environmental Control Systems for Defining the Activity Size Distribution of Radioactive Aerosols-a Case Study.