SU673902A1 - Mass transfer coefficient determining apparatus - Google Patents
Mass transfer coefficient determining apparatusInfo
- Publication number
- SU673902A1 SU673902A1 SU782587051A SU2587051A SU673902A1 SU 673902 A1 SU673902 A1 SU 673902A1 SU 782587051 A SU782587051 A SU 782587051A SU 2587051 A SU2587051 A SU 2587051A SU 673902 A1 SU673902 A1 SU 673902A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- mass transfer
- transfer coefficient
- determining apparatus
- coefficient determining
- moisture
- Prior art date
Links
- 238000012546 transfer Methods 0.000 title description 7
- 238000009434 installation Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Description
1one
Изобретение относитс к измерительной технике и предназначено дл определени массопереносных характеристик дисперсных капилл рнопористых зернистых материалов , например, абразивных порошков, плавленых флюсов и др.The invention relates to a measurement technique and is intended to determine the mass transfer characteristics of dispersed capillary porous granular materials, for example, abrasive powders, fused fluxes, etc.
Известны установки дл определени характеристик массопереноса в стационарных и нестационарных услови х, содержащие термостатируемую влагоизолированную кассету с исследуемым материалом, к которому с помопаью фитилей или влагопропицаемых пористых мембран подводитс влага 1. С помощью датчиков (или весовым способом) определ етс градиент влагосодержани по высоте материала и поток массы.Installations for determining the characteristics of mass transfer under stationary and non-stationary conditions are known, containing a thermostatted moisture-isolated cassette with the test material, to which moisture gradient is determined by means of sensors (or by the weight method) and the height of the material and mass flow.
Однако в процессе сушки массоперенос происходит в неизтермических услови х, и значени коэффициента массопереноса, полученные на известных установках, будут суш.ественно отличатьс от коэффициентов массопереноса, имеющих место непосредственно в кинетических режимах.However, during the drying process, mass transfer occurs under non-thermal conditions, and the values of the mass transfer coefficients obtained at known installations will differ naturally from the mass transfer coefficients that occur directly in kinetic modes.
Ближайщим технически.м решением к предлагаемому изобретению вл етс устаповка , содержаща аэродинамическую трубу калорифер, тепловлагоизолированную кассету и контрольно-измерительную аппаратуру 2.The closest technical solution to the present invention is an installation comprising a wind tunnel, a heater, a heat and moisture insulated cassette, and test equipment 2.
В известной установке не учитываетс зависимость коэффициентов переноса от влагосодержани и температуры, сравнительно малые размеры кассеты, которые могут привести к про влению краевых эффектов , сложно-непрерывное взвещиванне кассеты, наход щейс в высокоскоростном потоке.The known apparatus does not take into account the dependence of the transfer coefficients on the moisture content and temperature, the relatively small dimensions of the cassette, which can lead to the manifestation of edge effects, difficult-to-continuous cassettes that are in high-speed flow.
Целью изобретени вл етс повышение точности определени и упрощение конструкции установки.The aim of the invention is to improve the accuracy of determination and simplify the design of the installation.
Цель достигаетс тем, что в.предлагаемом устройстве кассета с исследуемым материалом , закрыта влагонепроницаемой сеткой , установлена с наружной стороны и заподлицо со стенкой аэродинамической трубы и подсоединена к отверстию в ней с помощью гофрированной манжеты. При этом размеры образца практически не ограничиваютс .The goal is achieved by the fact that the proposed device has a cassette with the test material, is covered with a moisture-proof mesh, is installed on the outside and is flush with the wall of the wind tunnel, and is connected to the hole in it with a pleated cuff. At the same time, the sample sizes are practically unlimited.
На чертеже представлена схема предлагаемой установки.The drawing shows the scheme of the proposed installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU782587051A SU673902A1 (en) | 1978-02-24 | 1978-02-24 | Mass transfer coefficient determining apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU782587051A SU673902A1 (en) | 1978-02-24 | 1978-02-24 | Mass transfer coefficient determining apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU673902A1 true SU673902A1 (en) | 1979-07-15 |
Family
ID=20752093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU782587051A SU673902A1 (en) | 1978-02-24 | 1978-02-24 | Mass transfer coefficient determining apparatus |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU673902A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494970A (en) * | 2011-11-09 | 2012-06-13 | 中国矿业大学 | Method and device for testing liquid surface forced evaporation mass transfer coefficients |
-
1978
- 1978-02-24 SU SU782587051A patent/SU673902A1/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494970A (en) * | 2011-11-09 | 2012-06-13 | 中国矿业大学 | Method and device for testing liquid surface forced evaporation mass transfer coefficients |
| CN102494970B (en) * | 2011-11-09 | 2013-08-21 | 中国矿业大学 | Method and device for testing liquid surface forced evaporation mass transfer coefficients |
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