Heat storage and heat supply device for phase-change material

Abstract

The invention relates to a heat storage and heat supply device for a phase-change material, comprising at least two heat storage boxes which are connected in a row, wherein, different phase-change materials are filled in the heat storage boxes respectively, and the phase-transition temperature of the phase-change material in each heat storage box is in step distribution from top to bottom; heat-supply heat exchangers and heat-extraction heat exchangers are arranged in the heat storage boxes, and the heat-supply heat exchangers are connected together and the heat-extraction heat exchangers are connected together through the walls of the heat storage boxes respectively; the heat-supply heat exchangers and the heat-extraction heat exchangers arranged on two ends of the heat storage boxes in the row are provided with joints which extend out of the heat storage boxes; heat insulation layers are arranged on the inner walls of the heat storage boxes; the phase-change materials are packaged in heat storage balls; and the heat-extraction heat exchangers are provided with high pressure protection devices. In the invention, by use of various phase-change materials with different phase-transition temperature, heat discharge energy can be fully utilized by stepped absorption, thereby ensuring that the energy is maximally utilized. The device of the invention has the advantages of simple structure, high heat exchange efficiency, high heat storage density and stable heat discharge.

Description

technical field [0001] The invention relates to a thermal energy storage and release device, in particular to a device utilizing phase change materials to realize heat storage and heat supply functions. Background technique [0002] During the use of heat energy, a part of the heat is lost due to ineffective utilization and storage in many cases, forming waste heat, resulting in thermal pollution and energy waste. The shortage of energy resources has become an indisputable fact, and energy conservation and emission reduction is an inevitable choice to achieve sustainable economic and social development. The existing waste heat recovery and reuse technology using a single phase change material heat storage and heating device has low energy utilization rate and small heat storage, and cannot make full use of the potential energy discharged, especially when the heat exhaust temperature is higher than 150°C and the operating temperature is lower than At 70°C, due to the large t...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing phase change material heat storage and heat supply devices cannot make full use of heat, the present invention provides a phase change material heat storage and heat supply device with high heat storage density, stable heat release and high thermal efficiency

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