Heat exchanger with observation window and for low temperature of 80K

Abstract

The invention discloses a heat exchanger with an observation window and for low temperature of 80K. According to the structure, a mechanical sealing mode is adopted, indium wires are used as sealing materials, and visual observation of the phase change process at the low temperature is realized. The heat exchanger has the beneficial effects that a phase change cavity is made of red copper, so thatthe heat exchange efficiency is effectively improved; an upper cover plate is made of stainless steel materials, so that the pressure bearing capacity of the heat exchanger is enhanced under the condition that heat leakage by an upper surface is reduced; the observation window is arranged between the upper cover plate and a heat exchange cavity, so that visual observation of the phase change process is realized; and the upper cover plate and glass, and the glass and the phase change cavity are sealed by the indium wires, so that components with different linear expansion coefficients are wellsealed in the cooling process, and phase change heat exchange and observation at the low temperature of 80K are realized.

Description

technical field [0001] The invention relates to the field of phase transformation heat, in particular to a heat exchanger with an observation window for 80K low temperature. Background technique [0002] Phase change heat exchanger is a practical device for efficient energy utilization. During the phase change, the heat exchanger performs phase change latent heat exchange, which has a large heat transfer coefficient, and achieves a large heat transfer amount under a small heat transfer area. Phase conversion heat has many applications and developments in aerospace, automobiles, air conditioners, superconductivity and other fields. [0003] Low-temperature phase-change heat is of great significance in aerospace and infrared fields. Studies have found that cryogenic fluids have unique thermodynamic properties, condensation heat transfer properties, and kinetic properties, which make the phase transitions of cryogenic fluids different from normal temperature fluids. [0004]...

AI Technical Summary

Problems solved by technology

The invention adopts indium wire as the sealing gasket, which ensures the airtightness of the inner cavity and solves the problem of sealing failure caused by the mismatch of the linear expansion coefficient during the cooling process of the heat exchanger from normal temperature to low temperature

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