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Setting method for heat pipe start-up temperature value

A start-up temperature and setting method technology, applied in lighting and heating equipment, indirect heat exchangers, etc., can solve the problem that the minimum wall temperature of the heat pipe cannot be accurately controlled, achieve considerable economic and social value, simple control, and low cost Effect

Inactive Publication Date: 2010-11-10
YUNNAN FENG PU TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcoming that the minimum wall temperature of the existing heat pipe cannot be accurately controlled, the setting method of the start-up temperature value of the heat pipe in the present invention is to select the working medium corresponding to the heat exchange temperature range according to the specific temperature range of the actual heat exchange. After the heat pipe is filled with the corresponding working medium, the heat pipe is filled with inert gas to make the pressure in the pipe reach the required specific value, and then the heat pipe is closed to realize the setting of the start-up temperature of the heat pipe. The purpose of tuning, in order to achieve the special application of heat pipe heat exchanger, and new application range, to achieve great economic value and social value

Method used

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  • Setting method for heat pipe start-up temperature value

Examples

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Embodiment 1

[0011] The recovery waste heat temperature is above 85°C. It is necessary to set the start-up temperature of the heat pipe to 85°C. Water is selected as the working medium, and the corresponding pressure value is 58KPa absolute pressure by checking the "Chart of Thermal Properties of Water and Water Vapor". After the working medium water is injected into the heat pipe, nitrogen is selected as the inert gas to be charged, and then nitrogen is injected to make the pressure inside the pipe an absolute pressure of 58KPa. The heat pipe made in this way will not exchange heat when the heat exchange temperature is lower than 85°C. up.

Embodiment 2

[0013] The recovery waste heat temperature is above 120°C, the start-up temperature of the heat pipe is 120°C, and water is selected as the working medium, and the corresponding pressure value is obtained as an absolute pressure of 199KPa by checking the "Chart of Thermal Properties of Water and Water Vapor". After the working medium water is injected into the vacuum heat pipe, nitrogen gas is selected as the inert gas to be charged, and then nitrogen gas is injected to make the pressure inside the tube 199KPa absolute. The heat pipe made in this way will not be exchanged when the heat exchange temperature is lower than 120°C. hot.

[0014] The heat pipe made by this method can conveniently control the minimum start-up temperature of the heat pipe, and at the same time control the minimum wall temperature of the heat pipe, exchange heat to the maximum within the required range, and greatly improve the heat exchange efficiency.

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Abstract

The invention relates to a setting method for a heat pipe start-up temperature value, comprising the following steps: according to the specific temperature range needing to exchange heat actually, selecting the work medium corresponding to the heat exchanging temperature range; after filling the corresponding work medium in the heat pipe, evacuating air in the heat pipe and then introducing inert gas in the heat pipe so as to enable the pressure in the heat pipe to reach the pressure value corresponding to the start-up temperature value of the work medium in the heat pipe; closing the heat pipe so as to set the heat exchange start-up temperature value of the heat pipe. The mode is simple to control, has low cost and accurate control, effectively prevents the exposed point of the heat pipe heat exchanger from being corroded, develops a new application range and can be widely used for recovering after heat and waste heat and reducing the energy consumption.

Description

technical field [0001] The invention relates to a heat conduction and controllable heat conduction temperature setting method applied in the fields of boilers, industrial kilns, chemical heat equipment, waste heat recovery and utilization, etc., and specifically relates to the technical field of a temperature setting method of a heat exchange device. Background technique [0002] At present, energy saving and consumption reduction is a national policy vigorously promoted by the country, especially the recovery of waste heat and waste heat has more practical value, which not only reduces the pollution of waste heat and waste heat to the environment, but also makes full use of the recovery of waste heat and waste heat to reduce energy consumption. It is a green environmental protection technology that benefits the country and the people. Heat pipe technology is widely used. Its working principle is to fill a closed tube with working medium and then seal it. One end of the heat...

Claims

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Application Information

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IPC IPC(8): F28D15/02
Inventor 朱鸿野
Owner YUNNAN FENG PU TECH
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