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Method for measuring heat conductivity coefficient of conduction oil

A technology of thermal conductivity and measurement method, which is applied in the field of measurement of liquid thermal conductivity and thermal conductivity of heat conduction oil, can solve problems such as many solder joints, solder joints fall off, and decrease in measurement accuracy, and achieve wide temperature range and high accuracy. High, fixed effect

Inactive Publication Date: 2017-04-19
中国锅炉水处理协会
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a single hot wire, the usual practice at home and abroad is to weld lead wires with similar diameters to the hot wire near the two ends of the hot wire. The welding is very difficult, and it is easy to fall off from the solder joint after welding. There are many solder points, resulting in lower reliability of the hot wire. Low, the measurement accuracy is reduced

Method used

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  • Method for measuring heat conductivity coefficient of conduction oil
  • Method for measuring heat conductivity coefficient of conduction oil
  • Method for measuring heat conductivity coefficient of conduction oil

Examples

Experimental program
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Effect test

Embodiment 1

[0084] Using an integrated etching process, such as the method described in Example 1 of Chinese invention patent ZL 200310123131.0, replace the niobium sheet with a tantalum sheet, and obtain the following figure 1 The inverted double U-shaped heating wire structure, in the inverted double U-shaped structure, the width of the heating wire is 25μm, the length is 20mm, the lead-out wire is used as the wire and support structure of the middle heating wire, the width is 5mm, and the thickness is 30μm, and then added on the upper and lower surfaces After the polyimide membrane is placed on the attached figure 2 In the thermal conductivity cell where the thermal conductivity is measured as shown, connect other lines for measurement to form an attached image 3 As shown in the measuring device, you can start the measurement.

[0085] The measured results are shown in Table 1 below.

Embodiment 2

[0087] Using an integrated etching process, such as the method described in the embodiment of Chinese Invention Chinese Patent Application CN 104278274 A, does not require "sputtering on a glass substrate to form a molybdenum insulating layer, and then sputtering on the molybdenum insulating layer Copper to form a copper conductor body layer", sputtering copper directly on a glass substrate to form a copper conductor layer, and then obtained as attached figure 1 The inverted double U-shaped heating wire structure, in the inverted double U-shaped structure, the width of the heating wire is 25μm, the length is 20mm, the lead-out wire is used as the wire and support structure of the middle heating wire, the width is 5mm, the thickness is 1μm, and then added on the upper and lower surfaces After the polyimide membrane is placed on the attached figure 2 In the thermal conductivity cell where the thermal conductivity is measured as shown, connect other lines for measurement to form...

Embodiment 3

[0090] Use an integrated etching process, such as the method described in Example 1 of Chinese invention patent ZL 200910264387.0, change the palladium plating solution into platinum plating solution, and obtain the following figure 1 The inverted double U-shaped heating wire structure, in the inverted double U-shaped structure, the width of the heating wire is 25μm, the length is 20mm, the lead-out wire is used as the wire and support structure of the middle heating wire, the width is 5mm, and the thickness is 10μm, and then added on the upper and lower surfaces After the polyimide membrane is placed on the attached figure 2 In the thermal conductivity cell where the thermal conductivity is measured as shown, connect other lines for measurement to form an attached image 3 As shown in the measuring device, you can start the measurement.

[0091] The measured results are shown in Table 1 below.

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Abstract

The invention relates to a method for measuring the heat conductivity coefficient of conduction oil. The method adopts a transient hot wire method, which is characterized in that the measuring method adopts a novel integral hot wire structure prepared by technologies such as etching, chemical plating, etc. The integral hot wire structure does not need welding and is good in stability and shock resistant property, so the method can measure a wide temperature range, moreover, due to the integral structure, there is no welding point, and the test accuracy is high.

Description

[0001] field of invention [0002] The present invention generally relates to the measurement of thermal conductivity, specifically, the present invention relates to the measurement of liquid thermal conductivity, and more specifically, the present invention relates to the measurement of thermal conductivity of heat transfer oil. Background technique [0003] In the concept of thermodynamics, heat refers to the energy exchanged between the system and the environment due to the temperature difference, and heat transfer is the process of heat transfer. In the heat transfer process, heat is transferred from a material with a higher temperature to a material with a lower temperature, which includes two forms of heating and cooling. Heat transfer is generally divided into direct heat transfer and indirect heat transfer in two ways. The so-called direct heat transfer is to directly transfer the heat from a high-temperature (or low-temperature) heat source to the material, such as o...

Claims

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Application Information

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IPC IPC(8): G01N25/20H05B3/00
CPCG01N25/20H05B3/00
Inventor 王骄凌司荣金栋
Owner 中国锅炉水处理协会
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