Heater of micro-boiling heat-transfer experimental device

A boiling heat transfer and experimental device technology, applied in laboratory utensils, heating or cooling equipment, chemical instruments and methods, etc., can solve the problems of increasing thermal resistance, thermal insulation material bursting, leakage, etc., to achieve uniform force, eliminate effect of stress

Inactive Publication Date: 2012-06-20
HARBIN ENG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are two disadvantages in the general miniaturized boiling experimental device: first, due to the very high heat flux density on the heating surface, the temperature difference between the heating surface and the non-heating surface is very large, and the thermal expansion is often very different, caus...

Method used

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  • Heater of micro-boiling heat-transfer experimental device
  • Heater of micro-boiling heat-transfer experimental device
  • Heater of micro-boiling heat-transfer experimental device

Examples

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Embodiment Construction

[0016] The following examples describe the present invention in more detail:

[0017] combine figure 1 , the heater of the miniaturized boiling heat transfer experimental device of the present invention consists of ceramic heat insulating sleeve 13-6, sealing washers 13-9 and 13-10, stainless steel pressure equalizing washers 13-7, cover plate 13-1 and fastening bolts 13-11 and so on constitute. The fixing between the cover plate 13-1 and the test section shell 13-2 is realized by fastening bolts. The cover plate and the heating copper block 13-12 are close together, and the top of the heating copper block 13-12 is processed with a step. Heat insulating gasket 13-8 and stainless steel pressure equalizing washer 13-7 are respectively installed, between the stainless steel pressure equalizing washer and the shell of the test section is ceramic heat insulating sleeve 13-6, heating copper block 13-12 and heat insulating sleeve 13- There is a seal ring 13-9 between the 6, a seal ...

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Abstract

The invention provides a heater of a micro-boiling heat-transfer experimental device, which comprises a shell, a cover plate, a connecting bolt and a heating copper block, wherein the heating copper block is a cone-shaped table, a hole matched with the top of the cone-shaped table of the heating copper block is arranged on the shell, the top of the heating copper block is positioned in the hole on the shell, the bottom of the heating copper block is arranged on the cover plate, the cover plate and the shell are connected by the connecting bolt, an insulation sleeve is arranged in the contact position of the heating copper block and the shell, and the bottom or the inner part of the heating copper block is provided with a heating rod. The heater can realize heat transfer experiments with high heat-flow density, the heat-flow density of a heating surface can reach 107W/m2 so that a critical thermal load phenomenon is ensured not to happen, and simultaneously air bubble behaviors during micro-boiling can be observed.

Description

technical field [0001] The invention relates to a heater of a miniaturized boiling heat transfer experiment device capable of realizing a visible boiling heat transfer performance experiment under extremely high heat flux density. Background technique [0002] The research on microbubble boiling is still relatively scattered, and only a few countries have carried out preliminary research. There are two disadvantages in the general miniaturized boiling experimental device: first, due to the very high heat flux density on the heating surface, the temperature difference between the heating surface and the non-heating surface is very large, and the thermal expansion is often very different, causing the thermal insulation material to easily swell. Second, some experimental circuits will achieve the sealing function by welding a thin metal sheet on the heating and non-heating surface. However, new thermal resistance will often be added, resulting in the inability to appear microsc...

Claims

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Application Information

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IPC IPC(8): B01L7/00
Inventor 孙立成阎昌琪孙中宁王建军曹夏昕丁铭谷海峰范广明李汶蔚马福秋
Owner HARBIN ENG UNIV
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