A point heat source temperature test method for non-direct contact

Abstract

The invention discloses a point heat source temperature test method for non-direct contact. A measured piece is placed in the middle of an incubator, so that a thermal conductivity coefficient K has the same value at the same ambient temperature and the same surface temperature of the measured piece; further, when the difference between the surface temperature of the measured piece and the ambient temperature is the same, the thermal conductivity coefficient K has the same value; because the measured piece is a point heat source, when the temperature is stable, the ambient temperature will be in inverse proportion to a cube of the distance from the heat source under the effect of the heat source. Consequently, the test point of the ambient temperature is set at a position not close to the measured piece and not near the wall of the box. In test, when the ambient temperature inside the box and the temperature of the measured piece are stable, the surface temperature and heating power are recorded. Through the collected experimental data, the K is calculated through the above formula. Through the method, indirect measurement can be carried out, and the direct contact with the measured piece is not needed.

Description

technical field [0001] The invention relates to the technical field of a method for measuring the temperature of a point heat source that cannot be directly contacted, in particular to a method for measuring the temperature of a point heat source that cannot be directly contacted. Background technique [0002] When the volume of the heating element is small (approximately a point heat source), its surface temperature cannot be directly tested by the contact thermometer test method for some reason, and it is difficult to test the temperature with a non-contact infrared thermometer test because the volume is too small The method measures the temperature, especially, it is usually difficult to directly measure the temperature of the point heat source when the heat insulation package is usually carried out outside the point heat source. But in practice, it is often necessary to obtain the surface temperature of the point heat source. In order to solve the problem that the point ...

AI Technical Summary

Problems solved by technology

[0002] When the volume of the heating element is small (approximately a point heat source), its surface temperature cannot be directly tested by the contact thermometer test method for some reason, and it is difficult to test the temperature with a non-contact infrared thermometer test because the volume is too small method to test the temperature, especially, the heat insulation package is usually carried out on the outside of the point heat source, so the direct measurement of the temperature of the point heat source is more difficult

But in practice, it is often necessary to obtain the surface temperature of the point heat source. In order to solve the problem that the point heat source cannot be directly measured, a temperature measurement method is specially designed.

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