SU537288A1 - Method for determining thermal conductivity of solids - Google Patents
Method for determining thermal conductivity of solidsInfo
- Publication number
- SU537288A1 SU537288A1 SU2137774A SU2137774A SU537288A1 SU 537288 A1 SU537288 A1 SU 537288A1 SU 2137774 A SU2137774 A SU 2137774A SU 2137774 A SU2137774 A SU 2137774A SU 537288 A1 SU537288 A1 SU 537288A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- solids
- thermal conductivity
- determining thermal
- sample
- thermal
- Prior art date
Links
Landscapes
- Analysing Materials By The Use Of Radiation (AREA)
Description
1one
Изобретение относитс к рентгеноструктурному анализу и может использоватьс дл определени тепловых характеристик твердых тел.The invention relates to X-ray diffraction analysis and can be used to determine the thermal characteristics of solids.
Известен рентгеновский способ исследовани тепловых характеристик твердых тел, согласно которому производ т нагрев образца и регистрируют сдвиг углов дифракции в зависимости от температуры 1.A known X-ray method for studying the thermal characteristics of solids, according to which the sample is heated and the diffraction angles are shifted as a function of temperature 1.
Указанный способ не пригоден дл измерени теплопроводности твердых т€л.This method is not suitable for measuring the thermal conductivity of solids.
Известен рентгеновский способ измерени напр жений 81п2ф-методом 2.An x-ray method is known for measuring the stresses of a np2f method 2.
Однако этот метод не примен етс дл измерени теплопроводности твердых тел.However, this method is not used to measure the thermal conductivity of solids.
Классический способ определени теплопроводности твердых тел заключаетс в том, что производ т нагрев образца, измер ют тепловой поток и перепад температур и по полученным данным определ ют теплопроводность 3. Перепад температур измер ют либо термопарами , либо с помощью оптических пирометров .The classical method for determining the thermal conductivity of solids is that the sample is heated, the heat flux and temperature drop are measured, and the thermal conductivity is determined from the data obtained. Temperature differences are measured either with thermocouples or with optical pyrometers.
Такой способ сложен в реализации, так как необходимо устанавливать каким-то образом на образец термопары, а в случае пирометров в образце нужно выполн ть пирометрические отверсти , в результате чего способ неприменим дл измерени теплопроводности тонкостенных изделий.This method is difficult to implement, since it is necessary to install the thermocouple in some way, and in the case of pyrometers, pyrometric holes must be made in the sample, as a result of which the method is inapplicable for measuring the thermal conductivity of thin-walled products.
Цель изобретени - упрощение реализации способа.The purpose of the invention is to simplify the implementation of the method.
Это достигаетс тем, что по предлагаемому способу перепад температур в образце определ ют рентгенографическим методом, измер коэффициент термического расширени и величину термических напр жений на поверхности образца, причем последнюю определ ют с помощью 51п2г|з-метода.This is achieved by the fact that according to the proposed method, the temperature difference in the sample is determined by the X-ray method, the measurement of the thermal expansion coefficient and the magnitude of the thermal stresses on the surface of the sample, the latter being determined using a 51p2g method.
Сущность способа заключаетс в следующем .The essence of the method is as follows.
Согласно закону Фурье теплопроводность определ етс формулойAccording to Fourier's law, thermal conductivity is determined by the formula
,(1) ,(one)
дг где Q - тепловой поток;dg where Q is the heat flux;
AT - перепад температур; Ki - коэффициент пропорциональности. Также известны соотношени между термоупругими напр жени ми на поверхности образца и перепадом температур:AT - temperature difference; Ki is the proportionality coefficient. The relationships between thermoelastic stresses on the sample surface and temperature difference are also known:
в :- ЛГ/С„(2)in: - LH / S „(2)
1-IA1-IA
где а - коэффициент термического расширени ;where a is the coefficient of thermal expansion;
-модуль Юнга; 1 - коэффициент Пуассона; АГ - перепад температур; Kz - коэффициент пропорциональности; -Jung module; 1 - Poisson's ratio; AG - temperature difference; Kz - proportionality coefficient;
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2137774A SU537288A1 (en) | 1975-04-08 | 1975-04-08 | Method for determining thermal conductivity of solids |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2137774A SU537288A1 (en) | 1975-04-08 | 1975-04-08 | Method for determining thermal conductivity of solids |
Publications (1)
Publication Number | Publication Date |
---|---|
SU537288A1 true SU537288A1 (en) | 1976-11-30 |
Family
ID=20620564
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU2137774A SU537288A1 (en) | 1975-04-08 | 1975-04-08 | Method for determining thermal conductivity of solids |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU537288A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011081551A1 (en) * | 2009-12-31 | 2011-07-07 | Schlumberger Canada Limited | Method for core thermal conductivity determination |
WO2012091600A1 (en) * | 2010-12-30 | 2012-07-05 | Шлюмберже Текнолоджи Б.В. | Method for determining the thermal conductivity of an impregnated porous medium |
-
1975
- 1975-04-08 SU SU2137774A patent/SU537288A1/en active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011081551A1 (en) * | 2009-12-31 | 2011-07-07 | Schlumberger Canada Limited | Method for core thermal conductivity determination |
RU2503956C1 (en) * | 2009-12-31 | 2014-01-10 | Шлюмберже Текнолоджи Б.В. | Method to determine heat conductivity of core |
WO2012091600A1 (en) * | 2010-12-30 | 2012-07-05 | Шлюмберже Текнолоджи Б.В. | Method for determining the thermal conductivity of an impregnated porous medium |
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