SU495593A1 - The method for determining the thermal diffusivity of a fluid - Google Patents
The method for determining the thermal diffusivity of a fluidInfo
- Publication number
- SU495593A1 SU495593A1 SU2010409A SU2010409A SU495593A1 SU 495593 A1 SU495593 A1 SU 495593A1 SU 2010409 A SU2010409 A SU 2010409A SU 2010409 A SU2010409 A SU 2010409A SU 495593 A1 SU495593 A1 SU 495593A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- fluid
- temperature
- thermal diffusivity
- determining
- pipe
- Prior art date
Links
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Description
до измерител температуры к средней скорости течени ), параметр т можно определить как тангенс угла наклона пр мой, построенной Б координатах In t-Z.to the temperature meter to the average flow velocity), the parameter t can be defined as the slope of the straight line, constructed by the B coordinates In t – Z.
Температуропроводность определ ют по формуле, следующей нз равенства (3)The thermal diffusivity is determined by the following formula:
а:::. 0,.(5)but:::. 0,. (5)
Предлагаемый способ осуществл ют в следующей последовательности.The proposed method is carried out in the following sequence.
Ламинарный поток жидкости с известной температурой пропускают через трубу, температуру стенок которой поддерживают посто нной и отличной от температуры исследуемой жидкости. На достаточно большом рассто нии от входа в трубу в некоторой точке сечени измер ют температуру потока при нескольких значени х величины Z. Изменение Z может быть достигнуто за счет перемещени измерител темнературы вдоль оси трубы прн посто нной скорости течени жидкости (изменение л:) или за счет изменени скорости течени при неподвижном измерителе температуры (изменение o:i). Возможно одновременное изменение х и to или измерение температуры в нескольких точках по длине труб:,-. По получеиныл экснернментальным данным определ ют параметр т, нанример графически измер тангенс угла наклона пр мой ln/ mZ + Const к оси абсцисс. Температуронроводность вычнсл юг но формуле (5).A laminar flow of fluid with a known temperature is passed through a pipe, the temperature of the walls of which is kept constant and different from the temperature of the test liquid. At a sufficiently large distance from the pipe entrance, at some point of the cross section, the flow temperature is measured at several values of Z. The change in Z can be achieved by moving the temperature meter along the pipe axis at a constant fluid flow rate (change l :) or by changing the flow rate with a fixed temperature meter (change o: i). It is possible to simultaneously change x and to or measure temperature at several points along the length of the pipes:, -. The parameter τ is determined from the fi nancial data, and graphically measures the tangent of the direct ln / mZ + Const to the abscissa axis. The thermal conductivity is calculated by formula (5).
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2010409A SU495593A1 (en) | 1974-04-01 | 1974-04-01 | The method for determining the thermal diffusivity of a fluid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2010409A SU495593A1 (en) | 1974-04-01 | 1974-04-01 | The method for determining the thermal diffusivity of a fluid |
Publications (1)
Publication Number | Publication Date |
---|---|
SU495593A1 true SU495593A1 (en) | 1975-12-15 |
Family
ID=20580216
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU2010409A SU495593A1 (en) | 1974-04-01 | 1974-04-01 | The method for determining the thermal diffusivity of a fluid |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU495593A1 (en) |
-
1974
- 1974-04-01 SU SU2010409A patent/SU495593A1/en active
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