Visual experiment device for frosting of trace water

An experimental device, a technology for trace water, which is applied in measurement devices, instruments, scientific instruments, etc., can solve the problem of not developing the law of sublimation and frosting of trace water vapor, and achieve the effect of real-time measurement of thickness and quality

Pending Publication Date: 2021-04-16
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no experimental device that can obtain the law of condensation and frosting of trace water vapor in a mixed atmosphere under low temperature conditions.

Method used

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  • Visual experiment device for frosting of trace water
  • Visual experiment device for frosting of trace water

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Experimental program
Comparison scheme
Effect test

Embodiment

[0031] see figure 1 with figure 2 In this embodiment, the trace water frosting visualization experiment device of this embodiment includes a vacuum box 1 , a constant temperature desublimation frosting unit, a measuring unit and a gas distribution system 3 .

[0032] The constant temperature desublimation frosting unit is arranged in the vacuum chamber 1, including the desublimation chamber 2, the desublimation cold surface 8, the temperature control component 10 and the cold source. In this embodiment, the cold source is the liquid nitrogen pool 9, and the liquid nitrogen pool 9 is set There is a liquid nitrogen inlet pipeline 6 and a nitrogen gas outlet pipeline 7, and the nitrogen gas outlet pipeline 7 is higher than the liquid level of the liquid nitrogen. The two sides of the desublimation chamber 2 are respectively provided with an air inlet pipeline 4 and an air outlet pipeline 5, which respectively pass through the side wall of the vacuum box 1 and connect to the air...

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Abstract

The invention relates to a visual experiment device for frosting of trace water, and belongs to the technical field of design of frosting experiment devices. The device includes: a desublimation cavity which is internally provided with a desublimation cold surface for desublimation deposition of trace water vapor and growth of a frost layer; a cold source which is used for providing cold energy for desublimation and frosting of trace water vapor; a temperature control assembly which is used for controlling the temperature of the desublimation cold surface, so that the whole desublimation frosting process occurs under a constant-temperature condition; a micro-mass measurement assembly which is arranged at the bottom of the desublimation cold surface and is used for measuring the mass of a desublimated and frosted frost layer on the cold surface; a microscopic shooting assembly which is used for obtaining frost layer growth morphologies at different times and measuring the thickness of a desublimated and frosted frost layer on the cold surface; agas inlet pipe and agas outlet pipe which are communicated with the desublimation cavity; and a gas distribution system which takes non-condensable gas as a gas source, wherein mixed gas with different water vapor contents is obtained through drying or humidifying, and the mixed gas passes through the gas inlet pipe. The law of desublimation and frosting of trace water vapor in the mixed atmosphere under different operation conditions can be obtained.

Description

technical field [0001] The invention relates to the technical field of design of frosting experimental devices, in particular to a trace water frosting visualization experimental device. Background technique [0002] Air transport industry and aviation manufacturing industry are strategic industries that promote my country's economic development. In recent years, my country's air transport industry has developed rapidly. However, the aviation manufacturing industry is still in a relatively backward situation, and it is urgent to speed up development to achieve the goal of building a strong aviation and civil aviation country. The starting point of the aviation manufacturing industry is the design of advanced aircraft, and the refined design requires the aerodynamic data under the actual flight Reynolds number as an important support. [0003] The large-scale low-temperature wind tunnel uses high-purity liquid nitrogen as a refrigerant, and cools the test nitrogen by evapora...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/14
Inventor 植晓琴漆映荷邱利民叶恒扬胡虬钦
Owner ZHEJIANG UNIV
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