A phase change energy storage device and heat recycling system

Abstract

The invention discloses a phase change energy storage device and a heat recycling system. The phase change energy storage device is composed of a shell, a heat transfer fluid pipeline and a phase change material; the heat transfer fluid pipeline comprises a heat transfer fluid inlet, a heat transfer fluid outlet and a heat exchange part connected with the heat transfer fluid inlet and the heat transfer fluid outlet, the heat exchange part is located in the shell, the heat exchange part is provided with a three-dimensional fractal heat transfer fluid pipeline, and is formed by connecting at least three stages of heat transfer fluid branch pipes which are symmetric at an inlet and an outlet, the pipe diameters of the adjacent two-stage heat transfer fluid branch pipes meet the Murray law, and the length of each adjacent two-stage heat transfer fluid branch pipe meets the configuration principle; and fractal grid ribs are fixed on the last stage of heat transfer fluid branch pipe, and thefractal grid ribs are made of high-conductivity metal ribs with a gradient thickness. According to the device and the system, the shell is filled with a phase change material to store energy, the stored energy can be recycled, and high-efficiency heat exchange between the heat transfer fluid and the phase-change material can be realized under the condition that the heat dissipation condition is limited, so that stable operation of the heat-dissipation equipment is ensured.

Description

technical field [0001] The invention relates to a phase change energy storage device, in particular to a fractal phase change energy storage device working for high power consumption and high heat flux density equipment under the condition of limited heat dissipation resources. Background technique [0002] The development of modern military science and technology is changing with each passing day. In order to meet the requirements of military strategy, high-energy equipment such as missiles, lasers, and radars have been greatly developed. In order to improve the privacy of equipment and at the same time adapt to the special requirements of equipment use, many high-energy equipment have begun to be deployed in some harsh environments, such as deserts, mountains, and even space. Studies have shown that some high-energy equipment such as laser weapons will generate extremely high-intensity heat flow when performing tasks, and the equipment works intermittently, and the load fl...

AI Technical Summary

Problems solved by technology

Existing high-power equipment cooling technologies include liquid cooling, spray cooling, heat pump cooling, etc., which have the disadvantages of low heat load capacity, slow heat transfer speed, and high requirements for heat dissipation resources.

It is impossible to achieve efficient thermal management of high-power, high-heat-flux instruments and equipment under the condition of limited heat dissipation resources

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