Visual experiment device for frosting of trace water

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...

AI Technical Summary

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.

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