Efficient three-medium phase change coupled cold-accumulating and heat-exchanging device

Abstract

The invention relates to a heat exchange technology with a cold accumulation function and discloses an efficient three-medium phase change coupled cold-accumulating and heat-exchanging device which comprises an inner tube of a bidirectional fin, a housing tube with an outer straight rib, an upper end plate and a lower end plate. The efficient three-medium phase change coupled cold-accumulating and heat-exchanging device is characterized in that the inner side of the inner tube of the bidirectional fin is provided with an inner ripple fin, the outer side of the inner tube is provided with a plurality of axial straight fins; the outer side of the housing tube is provided with a plurality of axial straight fins used for exchanging heat with a cold carrying fluid of a cold utilizing system; the axial straight fins at the outer side of the inner tube are in soldering connection with the inner wall of the housing tube; and a low-temperature solid-liquid phase change material is filled in a multi-channel interlayer cavity formed between the inner tube and the housing tube. The invention provides a cold-accumulating and heat-exchanging device which stores and regulates low-temperature cold released by low-temperature liquefied liquid in a gas liquefying rewarming process by adopting the phase change latent heat of the low-temperature solid-liquid phase change material, and the cold-accumulating and heat-exchanging device has a function of storing and regulating low-temperature cold, can ensure the continuity and the stability of supplying the cold by using a cold utilizing system,and is a key device of the low-temperature liquefied gas cold recycling technology.

Description

Technical field: [0001] The invention relates to heat exchange technology with cold storage function, in particular to a phase change coupled cold storage heat exchange technology with three heat exchange media. Background technique: [0002] With the rapid development of our country's social economy, the continuous advancement of national defense technology and civilian industrial technology, the production and application of cryogenic liquefied gases are playing an increasingly important role in the development of the national economy. In recent years, the rapid development of liquefied natural gas-related industrial chains is of great significance to adjusting the national energy structure and ensuring my country's energy security; low-temperature liquefied gases such as liquid hydrogen, liquid oxygen, and liquid nitrogen are more and more widely used in the defense industry and aerospace technology. [0003] The production process of low-temperature liquefied gas needs t...

AI Technical Summary

Problems solved by technology

However, between the gasification system of low-temperature liquefied gas and the cooling capacity utilization device, there is often a contradiction between the supply and demand of low-temperature cooling capacity due to the fluctuation of the gasification amount of the liquefied gas.

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