SU127843A1 - Method for determining thermal diffusivity and thermal conductivity of samples of material - Google Patents

Method for determining thermal diffusivity and thermal conductivity of samples of material

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Publication number
SU127843A1
SU127843A1 SU631828A SU631828A SU127843A1 SU 127843 A1 SU127843 A1 SU 127843A1 SU 631828 A SU631828 A SU 631828A SU 631828 A SU631828 A SU 631828A SU 127843 A1 SU127843 A1 SU 127843A1
Authority
SU
USSR - Soviet Union
Prior art keywords
samples
determining
thermal
thermal conductivity
heater
Prior art date
Application number
SU631828A
Other languages
Russian (ru)
Inventor
А.М. Бутов
Original Assignee
А.М. Бутов
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 А.М. Бутов filed Critical А.М. Бутов
Priority to SU631828A priority Critical patent/SU127843A1/en
Application granted granted Critical
Publication of SU127843A1 publication Critical patent/SU127843A1/en

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Description

Изобретение относитс  к способам определени  коэффпциентов температуропроводности и теплопроводности образцов материала в режиме нестационарного темиературного пол  при помощи нагревател  и термометров .The invention relates to methods for determining the coefficients of thermal diffusivity and thermal conductivity of samples of a material in the mode of non-stationary temperature floor using heaters and thermometers.

Предлагаемый способ отличаетс  от известных тем. что в процессе опыта фиксируют продолжительность действи  нагревател  до момента его отключени , после чего замер ют температуры через определенные промежутки времени и по полученным данным наход т теплофизические коэффициенты. Применение такого способа позвол ет повысить точность измерений, в частности, при определении указанных коэффициентов дл  сыпучих и пластических материалов.The proposed method differs from the known topics. that in the course of the experiment, the duration of the heater is recorded until it is turned off, after which temperatures are measured at certain time intervals and thermophysical coefficients are found from the data obtained. The use of such a method makes it possible to increase the accuracy of measurements, in particular, in determining the indicated coefficients for bulk and plastic materials.

На чертеже изображена схема установки дл  осуществлени  предлагаемого способа.The drawing shows an installation diagram for carrying out the proposed method.

В испытуемом образце 1 помещены плоекий нагреватель 2 с термометром сопротивлени  5 и второй термометр 4, расположенный на некотором рассто нии от нагревател . ИзмеритеоТьна  схема состоит из термометров 5 и 4 двухполюсного переключател  5 и моста 6 посто нного тока с внешним зеркальным гальванометром 7 и батареей 8. Схема питани  нагревател  содержит источник 9 посто нного тока, амперметр 10, вольтметр 11, реостат 12 и ключ 13.In test sample 1, a fusible heater 2 with a resistance thermometer 5 and a second thermometer 4 located at some distance from the heater are placed. Measure the circuit consists of thermometers 5 and 4 of a two-pole switch 5 and a DC bridge 6 with an external mirror galvanometer 7 and a battery 8. The heater power supply circuit contains a DC source 9, an ammeter 10, a voltmeter 11, a resistor 12 and a switch 13.

При проведении опыта, предварительно отрегулировав сопротивление измерительной схемы, включают нагреватель 2 и след т за изменением температуры образца. В момент, когда она достигает заданной, выключают нагреватель и фиксируют продолжительность его действи , после чего замер ют температуры, фиксируемые термометром 4 через определенные промежутки временп. По полученным данным наход т искомые теплофизические коэффициенты, пользу сь дл  упрощени  заранее составленными таблицами зависимости между отдельными величинами .During the test, after adjusting the resistance of the measuring circuit, the heater 2 is turned on and the temperature of the sample is monitored. At the moment when it reaches the set point, the heater is turned off and the duration of its operation is recorded, after which the temperatures recorded by thermometer 4 are measured at certain intervals. According to the data obtained, the desired thermophysical coefficients are found, using, for simplicity, pre-compiled tables, the dependencies between the individual values.

П р е д м С т 1 3 о б р С т с и и  P re dm S t 1 3 about b R C t s and and

Способ определени  коэфф1;цисчпов тсмпсрату|К)нровод1 ост11 и теп ,()вс)дпост11 образцов материала в режиме нестационарного темгтсраTvpiioro иол  црц иомощц нагревател  и термометров, о т л и ч а ю щ i; йс   тем, что. с целью иовышенн  точности измерени . иа11))имер, дл  сыиучих и пластических материалов, фиксируют иродолжитольиость действи  нагревател  до момента его отключени , иослс чего замер ют температуры через определсипые промежутки времепп и по полученным данпым иаход т теилофпзичеекие коэффициенты.The method for determining the coeff. 1; is that. with the aim of increasing measurement accuracy. ia11)), for raw and plastic materials, record the duration of the action of the heater until it is turned off, and measure the temperatures at certain times and, according to the data obtained, calculate the thermal coefficients.

SU631828A 1959-06-23 1959-06-23 Method for determining thermal diffusivity and thermal conductivity of samples of material SU127843A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU631828A SU127843A1 (en) 1959-06-23 1959-06-23 Method for determining thermal diffusivity and thermal conductivity of samples of material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU631828A SU127843A1 (en) 1959-06-23 1959-06-23 Method for determining thermal diffusivity and thermal conductivity of samples of material

Publications (1)

Publication Number Publication Date
SU127843A1 true SU127843A1 (en) 1959-11-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU631828A SU127843A1 (en) 1959-06-23 1959-06-23 Method for determining thermal diffusivity and thermal conductivity of samples of material

Country Status (1)

Country Link
SU (1) SU127843A1 (en)

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