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A method of calibrating heat flow meter method thermal conductivity meter based on guarded hot plate method

A technology of protective hot plate method and thermal conductivity meter, which is applied in the direction of material thermal development, etc., can solve the problems of inability to accurately calibrate the thermal conductivity meter of the heat flow meter method, and achieve the effect of avoiding inaccurate instrument measurement, avoiding repeated purchases, and achieving accurate calibration

Active Publication Date: 2020-02-21
ZHEJIANG MEASUREMENT SCI RES INST
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  • Abstract
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  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem in the prior art that the thermal conductivity meter of the calorimeter method cannot be calibrated accurately, and to provide a method for calibrating the thermal conductivity meter of the calorimeter method based on the guarded hot plate method

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  • A method of calibrating heat flow meter method thermal conductivity meter based on guarded hot plate method
  • A method of calibrating heat flow meter method thermal conductivity meter based on guarded hot plate method

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Embodiment Construction

[0029] The present invention will be further elaborated and illustrated below in conjunction with the accompanying drawings and specific embodiments. The technical features of the various embodiments in the present invention can be combined accordingly on the premise that there is no conflict with each other.

[0030] like figure 1 As shown, in this embodiment, the system for calibrating the thermal conductivity meter of the heat flow meter method based on the guarded hot plate method is realized, including the guarded hot plate method thermal conductivity meter 1, the gauge block 2, the precision thin film thermal resistance 3, the thermal conductivity standard plate 4 and the heat flow meter method Thermal conductivity meter 5.

[0031] The guarded hot plate method thermal conductivity meter includes the double specimen guarded hot plate method thermal conductivity meter or the single specimen guarded hot plate method thermal conductivity meter, all of which need to be trac...

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Abstract

The invention discloses a method for calibrating a heat flow meter method conductometer based on a guarded hot plate method, and belongs to the field of calibration of thermal conductivity measuring apparatus. The method disclosed by the invention is characterized in that a guarded hot plate method conductometer is used for measuring a thermal conductivity value of a thermal conductivity standardplate, the thermal conductivity standard plate is assigned with a value at the corresponding temperature, and then the thermal conductivity standard plate assigned with the value is put into a heat flow meter method conductometer to be calibrated to perform a calibration procedure, thereby obtaining calibration factors of the heat flow meter method conductometer at the corresponding test temperature. Thus, the defect that a heat flow meter method conductometer with a fixed structure needs to be disassembled to solely calibrate heat flow meter parts is avoided, and meanwhilefurthermore, the problem of inaccurate apparatus measurement indirectly caused by disassembling the conductometer is avoided.

Description

technical field [0001] The invention relates to a method for calibrating a thermal conductivity instrument based on a protective hot plate method and belongs to the field of calibrating thermal conductivity measuring instruments. Background technique [0002] Thermal conductivity is the most important thermophysical parameter of thermal insulation materials, and its accurate measurement is of great significance. There are two methods for measuring thermal conductivity of thermal insulation materials: steady-state method and transient method. Among them, the heat flow meter method is a kind of steady-state method, which is an indirect or relative method based on the Fourier heat conduction law and based on the comparison of the thermal resistance of the test piece with the standard test piece. The heat flow meter method is widely used in the field of thermal insulation material production because of its simple principle, cost-effectiveness, and ability to measure the thermal...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N25/20
CPCG01N25/20
Inventor 余时帆王晓崔超方晓琴
Owner ZHEJIANG MEASUREMENT SCI RES INST
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