Phase change cold storage heat exchanger

Abstract

The invention provides a phase change cold storage heat exchanger. The phase change cold storage heat exchanger comprises a heat exchange flat pipe which is in a bent shape, wherein the heat exchange flat pipe comprises a plurality of independent flat pipe bodies which are arranged side by side. In the structure, according to the heat exchange flat pipe of the phase change cold storage heat exchanger, the independent flat pipe bodies internally provided with the a plurality of parallel internal flow channels serve as the heat exchange face, the heat exchange area is increased through the multiple-bending structure, light weight and compactness can be achieved, and meanwhile the heat exchange efficiency of the heat exchanger is effectively improved.

Description

technical field [0001] The invention belongs to the field of enhanced heat transfer, and in particular relates to a phase change cold storage heat exchanger. Background technique [0002] With the continuous advancement of deep space exploration, the thermal environment of the spacecraft has become more complex. When it is in orbit, there will be a large temperature difference between the sun and the shade, and the electronic equipment is required to work at a certain temperature. Therefore, thermal control equipment should have better smooth function for periodic high and low temperature environment changes. [0003] Phase change cold storage heat exchanger, which utilizes the cold storage (heat storage) of phase change materials (cold storage and heat storage are relative to the environment and application, hereinafter collectively referred to as cold storage) with strong ability and high temperature stability. Better stabilization function. For short temperature change ...

AI Technical Summary

Problems solved by technology

For short temperature change periods, especially transient changes, phase change materials are required to have high thermal conductivity; however, commonly used solid-liquid phase change cold storage materials have poor thermal conductivity and cannot maintain high heat transfer capacity for a long time

On the other hand, the contact surface between the phase change cold storage heat exchanger and the cold storage phase change material also affects the overall heat transfer efficiency, but the existing design still has defects

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