SU446818A1 - Device for measuring the thermal conductivity of conductive materials - Google Patents
Device for measuring the thermal conductivity of conductive materialsInfo
- Publication number
- SU446818A1 SU446818A1 SU1856370A SU1856370A SU446818A1 SU 446818 A1 SU446818 A1 SU 446818A1 SU 1856370 A SU1856370 A SU 1856370A SU 1856370 A SU1856370 A SU 1856370A SU 446818 A1 SU446818 A1 SU 446818A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- thermal conductivity
- sample
- measuring
- conductive materials
- temperature difference
- Prior art date
Links
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Description
1one
Устройство относитс к теплофизическим приборам.The device relates to thermophysical instruments.
Известно устройство дл измерени теплоироводности электропроводных материалов, включающее в качестве источников теплового потока джоулевы нагреватели с системой охранных колец дл повышени точности измерени .A device for measuring the thermal conductivity of electrically conductive materials is known, including Joule heaters with guard rings as sources of heat flow to improve measurement accuracy.
Определение коэффициента теплопроводности Я производ т косвенным иутем по замеренной величине теплового потока и разности темиератур на исследуемом образце.The determination of the thermal conductivity coefficient I is performed indirectly and measured by the measured value of the heat flux and the difference in temperature on the sample under study.
Дл упрощени измерений, повышени их точности, а также сокращени времени замера в предлагаемом устройстве образец и тепломер расположены на холодильнике в зоне равного облучени , причем сверху и снизу образца установлены пластины, образующие с ним естественную термопару, и така же пластина установлена на свободной поверхности тепломера.To simplify measurements, increase their accuracy, as well as reduce the measurement time in the proposed device, the sample and heat meter are located on the refrigerator in the zone of equal irradiation, and plates are installed on the free surface of the sample and on the free surface .
На чертеже схематически показано предлагаемое устройство. Тепловой поток, создаваемый осветительной лампой накаливани 1, измер етс термоэлектрическим тепломером 2, установленным вблизи от исследуемого образца 3. Тепломер 2 и образец 3 расположены своими основани ми на холодильнике 4, а верхние их плоскости покрыты пластинками 5,The drawing schematically shows the proposed device. The heat flux generated by the incandescent lighting lamp 1 is measured by a thermoelectric heat meter 2 installed close to the test sample 3. The heat meter 2 and sample 3 are located with their bases on the refrigerator 4, and their upper planes are covered with plates 5,
имеющими одинаковый коэффициент поглощени .having the same absorption coefficient.
Перед измерением разности температур на исследуемом образце посредством электродовBefore measuring the temperature difference on the sample under study by means of electrodes
6 и 7 определ ют коэффициент термоэ.д.с. а самого образца, дл чего на электродах 6 и 7 устанавливаетс определенна , нанеред заданна , разность температур ДГ и замер етс термоэ .д.с. UQJ.6 and 7 determine the coefficient of thermopower. and for the sample itself, for which an determined, predetermined, temperature difference DG is established on electrodes 6 and 7 and the thermoelectric power is measured. Uqj
Измерение разности температур на образце производитс установленными на его верхней и нижней поверхност х пластинок, составл ющих с исследуемым образцом «естественную термопару.The measurement of the temperature difference on the sample is carried out on the upper and lower surfaces of the plates that make up the natural thermocouple with the test sample.
Таким образом, коэффициент теплопроводности определ етс но формуле:Thus, the coefficient of thermal conductivity is determined by the formula:
и,and,
6,76.7
,,
и,and,
6.76.7
где g - тепловой поток, замеренный тепломером;where g is the heat flux measured by the calorimeter;
,7 - термоэ.д.с. естественной термопары , пропорциональна разности температур на исследуемом образце;, 7 - thermoelectric power. natural thermocouple, proportional to the temperature difference on the sample under study;
АГ - устанавливаема на образце при определении а разность температурAG - installed on the sample when determining the temperature difference
.. ;;. Ji М. ,... ;;. Ji M.,
.. ..
/ - высота образца;/ - sample height;
6,7 - термоэ.д.с. естественной термопары при разности температур АГ.6.7 - thermoelectric power. natural thermocouple with temperature difference AH.
Предмет изобретени Subject invention
Устройство дл измерени теплопроводности электропроводных материалов, содержащее источник лучистой энергии, тепломер и холо446818A device for measuring the thermal conductivity of electrically conductive materials, containing a source of radiant energy, a heat meter and a hollow446818
дильник, отличающеес тем, что, с целью упрощени измерений и повышени точности , образец и тепломер расположены на холодильнике в зоне равного облучени , причем сверху и снизу образца установлены пластины, образующие с ним естественную термопару, и така же пластина установлена на свободной поверхности тепломера.A mixer, characterized in that, in order to simplify measurements and improve accuracy, the sample and heat meter are located on the refrigerator in the area of equal irradiation, with plates above and below the sample that form a natural thermocouple with it, and the same plate is installed on the free surface of the heat meter.
ел вate in
7 t гг.ёрмостату7 t year of the thermostat
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1856370A SU446818A1 (en) | 1972-12-07 | 1972-12-07 | Device for measuring the thermal conductivity of conductive materials |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1856370A SU446818A1 (en) | 1972-12-07 | 1972-12-07 | Device for measuring the thermal conductivity of conductive materials |
Publications (1)
Publication Number | Publication Date |
---|---|
SU446818A1 true SU446818A1 (en) | 1974-10-15 |
Family
ID=20534861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1856370A SU446818A1 (en) | 1972-12-07 | 1972-12-07 | Device for measuring the thermal conductivity of conductive materials |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU446818A1 (en) |
-
1972
- 1972-12-07 SU SU1856370A patent/SU446818A1/en active
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