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Condensation heat transfer performance characterization device

A technology for heat transfer performance and characterization, which is applied in the field of condensation heat transfer performance characterization devices, can solve the problems of large heat loss, narrow control range of steam temperature zone, and difficult to control the content of extremely low non-condensable gas, so as to reduce heat loss. , the effect of simple operation

Pending Publication Date: 2021-02-02
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to overcome the problems existing in the prior art that the extremely low non-condensable gas content is difficult to control, the steam temperature range is narrow, and the heat loss is large, etc., and to provide a condensing heat transfer performance characterization device

Method used

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  • Condensation heat transfer performance characterization device
  • Condensation heat transfer performance characterization device
  • Condensation heat transfer performance characterization device

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] For the pure steam condensation heat transfer experiment, the technical solution is: first close the vacuum connection valve 11 between the main heating boiler 12 and the auxiliary heating boiler 10 of the steam generation unit, open the vacuum pipe joint 5 on the condensation pressure drop unit, and turn on the vacuum pump 7 Vacuumize the system to remove non-condensable gases in the system, add deionized water to the auxiliary heating boiler 10 of the steam generating unit, heat and boil for 30 minutes, and lower the water temperature to the preset steam temperature value. After vacuuming to the limit of the vacuum pump, close the vacuum pipe joint 5, open the vacuum connection valve 11 between the main heating boiler 12 and the auxiliary heating boiler 10 of the steam generating unit, so that water enters the main heating boiler 12, and close the vacuum connection valve 11. Turn on the heating control power of the main heating boiler, and at the same time turn on the ...

Embodiment 2

[0087] For steam condensation heat transfer experiments containing air, the technical solution is: first close the vacuum connection valve 11 between the main heating boiler 12 of the steam generating unit and the auxiliary heating boiler 10, open the vacuum pipe joint 5 on the condensation pressure drop unit, Turn on the vacuum pump 7 to vacuumize the system. After vacuuming to the preset vacuum degree, add deionized water into the auxiliary heating boiler 10 of the steam generating unit, heat and boil for 30 minutes, and lower the water temperature to the preset steam temperature value. After vacuuming to the limit of the vacuum pump, close the vacuum pipe joint 5, open the vacuum connection valve 11 between the main heating boiler 12 and the auxiliary heating boiler 10 of the steam generating unit, so that water enters the main heating boiler 12, and close the vacuum connection valve 11. Turn on the heating control power of the main heating boiler, and at the same time turn ...

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Abstract

The invention discloses a condensation heat transfer performance characterization device. The device comprises a double-boiler steam generation unit, a condensation test unit and a condensation pressure drop unit, wherein thedouble-boiler steam generation unit is used for heating a liquid working medium and comprises a main heating mechanism and an auxiliary heating mechanism; the condensation test unit is used for condensing the gaseous liquid working medium and comprises a condensation shell, a heat insulation assembly, a condensation test piece and a cooling circulation channel are arrangedin the condensation shell, a condensation cavity is defined by one side of the condensation shell and the heat insulation assembly, and the condensation test piece is arranged in the center of the heat insulation assembly; the surface of the condensation test piece is exposed in the condensation chamber, and the condensation chamber is communicated with the double-boiler steam generation unit; and the condensation pressure drop unit is used for controlling steady-state flow and vacuum degree of steam in the whole device. According to the miniaturized, compact and modular condensation heat transfer performance characterization device provided by the invention, the heat loss can be reduced to the maximum extent, and the condensation heat transfer performance and the mass transfer performance of different samples under the working conditions of pure steam and extremely-low non-condensable gas can be obtained.

Description

technical field [0001] The invention relates to the technical field of heat transfer evaluation, in particular to a condensation heat transfer performance characterization device. Background technique [0002] With the development of micro-nano processing technology, the design and development of new micro-nano interface for enhancing condensation heat transfer has received extensive attention and has become a research hotspot in recent years. However, there is still no commercial product for condensation heat transfer characterization devices. At present, in literature reports and published patents, most condensation heat transfer experiments use large-scale, complex, and multi-line experimental devices, which are not conducive to the precise control of non-condensable gases inside the system, and take up a lot of space and cause heat loss. For example, in the disclosed condensation heat transfer device, the "a kind of condensation heat transfer effect evaluation system" d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/18
CPCG01N25/18
Inventor 高雪峰王睿吴菲菲朱杰
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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