Device and method for movably supplying heat by using phase-change heat-storage balls

Abstract

The invention discloses a device and a method for movably supplying heat by using phase-change heat-storage balls. The device comprises a heat storage box body, the phase-change heat-storage balls, a heat-supply heat exchanger and a heat-removal heat exchanger, wherein a phase-change material is filled in the phase-change heat-storage balls; a heat storage cavity in which the phase-change heat-storage balls are filled is formed in the heat-storage box body; the heat-removal heat exchanger is arranged on the upper part of the heat storage cavity; and the heat-supply heat exchanger is arrange on the lower part of the heat storage cavity. By the technical scheme of the invention, the device has the advantages of simple structure, high heat exchange efficiency, high heat storage density and stable heat release, and as fluid flows in the heat exchanger rather than directly exchanging heat with a heat-storage phase-change material through a layer of tube wall, the problem that equipment leaks due to long-time use to cause heat-supply fluid to leak into the heat-storage cavity to pollute the phase-change material is solved.

Description

technical field [0001] The invention relates to an energy storage and release technology, in particular to a mobile heating device and method using phase-change heat storage bulbs. Background technique [0002] In the process of using a lot of energy, due to ineffective storage and utilization, the energy is lost to the air, forming waste heat, causing thermal pollution, resulting in low efficiency of equipment and waste of energy. In addition, due to the severe reality that my country's future economic development is currently facing: the shortage of energy resources (oil, gas, coal, and electricity) has become an indisputable fact. inevitable trend of development. [0003] In order to effectively utilize various waste heat resources, it is often necessary to use heat storage devices. However, the general heat storage device has a small heat storage capacity, a large heat storage volume, and unstable heat release. At the same time, there are obvious problems in the use of...

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Problems solved by technology

However, the general heat storage device has small heat storage capacity, large heat storage volume, and unstable heat release.

At the same time, there are obvious problems in the use of mobile heating devices that have been implemented, mainly including: 1) Due to the use of buried pipes in phase-change heat storage materials, charging and discharging can be achieved through the flow of cold (hot) water in the pipes; hot purpose

This consumes a lot of metal, which makes the manufacturing cost high and the transportation cost high; 2) Due to the long-term transportation bumps, the fatigue damage of the pipe is serious, and the crack of the pipe makes the phase change material contact with water, which threatens the safety of users. In addition, due to the phase change When the material enters the tube, the thermal resistance between water and the phase change material increases, and the heat transfer performance decreases; 3) Although the phase change material used has a high phase change latent heat, its fatal shortcoming lies in its toxicity, which directly affects the performance of the system. Safe, in addition, its phase transition temperature is low, which cannot fully meet the heating requirements in winter

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