SU180384A1 - METHOD OF MEASURING THE HEAT CONDUCTIVITY OF MULTILAYER CYLINDERS - Google Patents

METHOD OF MEASURING THE HEAT CONDUCTIVITY OF MULTILAYER CYLINDERS

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Publication number
SU180384A1
SU180384A1 SU920180A SU920180A SU180384A1 SU 180384 A1 SU180384 A1 SU 180384A1 SU 920180 A SU920180 A SU 920180A SU 920180 A SU920180 A SU 920180A SU 180384 A1 SU180384 A1 SU 180384A1
Authority
SU
USSR - Soviet Union
Prior art keywords
measuring
heat conductivity
heat
thermal conductivity
multilayer cylinders
Prior art date
Application number
SU920180A
Other languages
Russian (ru)
Original Assignee
Ю. В. Чушкин, Е. Ф. Давыдов , В. П. Петухов
Publication of SU180384A1 publication Critical patent/SU180384A1/en

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Description

известен способ измерени  теплопроводности многослойных цилиндров, который состоит в том, что тенловой поток подвод т изнутри исследуемого цилиндра по всей внутренней поверхности, а отвод т снаружи в окруж:ающую среду также по всей поверхности («метод трубы). Датчики температуры закладывают внутрь исследуемого образца.There is a known method for measuring the thermal conductivity of multilayer cylinders, which consists in the fact that the tenlow flow is supplied from the inside of the investigated cylinder over the entire inner surface and diverted outside to the surrounding: the surrounding medium also over the entire surface ("pipe method"). Temperature sensors lay inside the sample.

Теплопроводность определ ют по известным уравнени м как функцию теплового потока, перепада температур и геометрии образца.Thermal conductivity is determined by known equations as a function of heat flux, temperature difference, and sample geometry.

Предложенный способ измерени  радиальной теплопроводности многослойных цилиндров позвол ет производить указанные измерени  дистанционно, за счет локального подвода и отвода тепла и размещени  датчиков температуры вне исследуемого образца на тепловодах .The proposed method for measuring the radial thermal conductivity of multilayer cylinders allows these measurements to be performed remotely, due to local heat supply and removal and the placement of temperature sensors outside the sample under investigation in heat lines.

Описываемый сцособ основан ца методе стационарного и состоит в том, что тепловой поток к исследуемому цилиндру подвод т локально по одному тепловоду, а отвод т по двум другим также локально, перпендикул рно образующей цилиндра. Контакт тепловодов с поверхностью цилиндра происходит по линии или в точке. Надежность контакта обеспечивают прижимным приспособлением .The described method is based on the stationary method and consists in the fact that the heat flux to the cylinder under study is supplied locally through one heat pipe and diverted along the other two also locally, perpendicularly forming a cylinder. Contact teplovodov with the surface of the cylinder occurs on the line or at a point. The reliability of the contact provide clamping device.

датчика на каждом. Дл  уменьщени  погрещности за счет теплоотдачи в окружающую среду исследуемый образец помещают в теплоизол ционный контейнер.sensor on each. To reduce the incidence due to heat transfer to the environment, the test specimen is placed in a heat insulating container.

Величину теплового потока, создаваемого электронагревателем, установленным на теплоподводе , определ ют по разпости показаний термопар, установленных на одном тепловоде, а абсолютную температуру тенловодов - ноThe amount of heat flow generated by the electric heater installed at the heat supply is determined by the difference in the readings of thermocouples installed on the same thermal water, and the absolute temperature of the tenlovods is

э.д.с. блил-сайшей к цилиндру термопары. Теплопроводность определ ют как функцию разности темнератур тенлонодвода и теплоотвода , по заранее полученной экспернментально или теоретически зависимости ее от температуры при посто нном тепловом потоке, дл  тела цилиндрической формы с известной теплопроводностью .emf blischay to the cylinder thermocouple. Thermal conductivity is determined as a function of the temperature difference between the tenlone and heat sink, according to its dependence on temperature at a constant heat flux, previously obtained experimentally or theoretically for a cylindrical body with a known thermal conductivity.

Предмет изобретени Subject invention

Способ измерени  теплопроводности многослойных цилиндров при стационарном режи-; ме путем нодвода к поверхности цилиндра посто нного теплового потока, отличающийс  тем, что, с целью дистанционного измерени  радиальной теплопроводностн, тепловой поток подвод т и отвод т локально, в точке или по линии, перпендикул рно образующей цилиндра , а датчики температуры располагают вне исследуемого образца на тепловодах.The method of measuring the thermal conductivity of multilayer cylinders with a stationary mode; At the same time, by supplying a constant heat flux to the cylinder surface, characterized in that, in order to remotely measure the radial thermal conductivity, the heat flux is brought in and diverted locally, at a point or along a line perpendicular to the cylinder, and the temperature sensors are located outside the sample under study. on teplovodah.

SU920180A METHOD OF MEASURING THE HEAT CONDUCTIVITY OF MULTILAYER CYLINDERS SU180384A1 (en)

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Publication Number Publication Date
SU180384A1 true SU180384A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4541730A (en) * 1983-05-19 1985-09-17 Honeywell Inc. Apparatus and method for testing evacuatable dewar vessels
RU2621582C1 (en) * 2016-08-30 2017-06-06 Ирина Васильевна Пикулева Method for refining vegetable oils using polyacrylamide

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4541730A (en) * 1983-05-19 1985-09-17 Honeywell Inc. Apparatus and method for testing evacuatable dewar vessels
RU2621582C1 (en) * 2016-08-30 2017-06-06 Ирина Васильевна Пикулева Method for refining vegetable oils using polyacrylamide

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