D-shaped latent heat storage component

Abstract

The invention provides a D-shaped latent heat storage component which comprises a heating wall surface, a curve-shaped outer wall and two vertical wall surfaces, wherein the inside of the component is filled with a PCM (phase-change material); the outside of the component is coated with a heat preservation layer; and a curve obtained after an outline curve of the curve-shaped outer wall rotates for 90 degrees anticlockwise meets the requirement of a distribution pattern of an Asym2Sig curve in Peak Functions. According to the D-shaped latent heat storage component, more solid-state PCMs can be directly contacted with a high-temperature liquid PCM for heat exchange, and the phenomenon that a large number of the high-temperature liquid PCMs accumulate at the top of a container is avoided, so that vertical temperatures in the container are more uniformly distributed, and a heat exchange dead corner at the bottom of a conventional rectangular container in a melting process is effectively eliminated at the same time; and convective heat exchange intensity in the melting process is effectively enhanced, so that the melting rate of the PCM in the component is increased to the uttermost, the heat storage time is shortened, and the heat storage capacity per unit of time is increased.

Description

technical field [0001] The invention relates to a heat storage component in a heat energy recovery and storage system, in particular to a "D-shaped" latent heat storage component. Background technique [0002] Heat storage device is a very important tool in the field of waste heat recovery, solar energy and other renewable energy utilization. Its main function is to store all kinds of discontinuous waste heat generated in industry and intermittent energy such as solar energy that changes with time when the energy supply is sufficient, and then release it for users when needed. Latent heat storage devices have attracted attention because of their large heat storage per unit volume, relatively constant temperature during the heat storage process, and devices with different temperature ranges to choose from. Plate heat accumulators (corresponding to rectangular heat storage components) have been widely researched and applied due to their simple structure and large heat storage...

AI Technical Summary

Problems solved by technology

However, for this kind of plate heat accumulator composed of rectangular heat storage components, there is a common disadvantage, that is, when the phase change material is selected and the operating conditions are certain, because most phase change materials have a relatively low Thermal conductivity, the existence of heat transfer dead angle, makes the heat transfer performance of the entire heat storage device low, resulting in the inability of the phase change heat storage device to quickly store or release heat, which has become the main factor restricting its development and application. It is undoubtedly of great significance to strengthen the heat transfer process of similar phase change heat accumulators

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