Phase change heat storage element and heat storage and supply device adopting same

Abstract

The invention discloses a phase change heat storage element and a heat storage and supply device adopting the same. The phase change heat storage element comprises a shell, wherein a hollow cavity is formed in the shell; a phase change heat storage material is filled in the hollow cavity; a heat pipe is arranged in the hollow cavity; and part of the heat pipe is exposed out of the shell. The heat pipe is used for transmitting heat, so that the heat storage time of the phase change heat storage element disclosed by the invention is short. The heat storage and supply device comprises a box body, wherein a phase change heat storage chamber and a heat supply heating chamber are formed in the box body; a cold water inlet and a hot water outlet are formed in the phase changer heat storage chamber; a heat source inlet is formed in the heat supply heating chamber; at least one phase change heat storage element is arranged in the phase change heat storage chamber; and the part, exposed out of the shell, of the heat pipe arranged in the phase change heat storage element is arranged in the heat supply heating chamber. The phase change heat storage chamber and the heat supply heating chamber are separated from each other, so that the heat pipe can be heated by using industrial smoke or media, such as steam, hot water and the like; and therefore, the phase change heat storage element can well adapt to outside heat sources.

Description

technical field [0001] The invention belongs to energy storage and release technology, in particular to a phase change heat storage element and a heat storage heat supply device using the element. Background technique [0002] At present, the phase change heat storage technology is widely used, especially the mobile heat storage heat supply device as a supplementary facility for heating network heating and self-contained boiler heat supply is developing rapidly. The current phase change heat storage heat supply devices mainly include heat storage bodies There are several forms of heat storage, such as integral heat storage, tubular heat storage element unit heat storage, heat storage ball unit heat storage, etc., but the following problems generally exist: 1) The adaptability to heat sources is poor. Design the waste heat boiler properly, and then provide steam or hot water to the mobile heat storage and heating device, which increases the investment in equipment; 2) Heat st...

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Problems solved by technology

[0002] At present, the phase change heat storage technology is widely used, especially the mobile heat storage heat supply device as a supplementary facility for heating network heating and self-contained boiler heat supply is developing rapidly. The current phase change heat storage heat supply devices mainly include heat storage bodies There are several forms of heat storage, such as integral heat storage, tubular heat storage element unit heat storage, heat storage ball unit heat storage, etc., but the following problems generally exist: 1) The adaptability to heat sources is poor. Design the waste heat boiler properly, and then provide steam or hot water to the mobile heat storage and heating device, which increases the investment in equipment; 2) Heat storage and heat supply need to transfer heat through a heat transfer medium, there are many heat exchange links, and the heat The attenuation is large, and the heat charging and heat release time is long; 3) Part of the heat storage body is an integral heat storage and heat supply device. Steam or water completes heat storage and heat extraction through coils buried in the heat storage body, and steam The temperature of the condensed water discharged during the heat storage of the heat storage coil is as high as 80°C, resulting in a low utilization rate of heat resources; when the cold water passes through the coil buried in the heat storage body to obtain heat, the air blockage phenomenon is serious and cannot be carried out smoothly. take heat

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