Phase change heat storage heat exchanger and system thereof

Abstract

The invention relates to the technical field of solar thermal power generation and discloses a phase change heat storage heat exchanger and a system thereof. The phase change heat storage heat exchanger comprises a vertical type heat storage heat exchanger tank body, a plurality of heat storage material packaging bodies used for packaging phase change heat storage media and vertically arranged inthe tank body of the heat storage tank, multi-hole densely arranged spraying devices arranged above the heat storage material packaging bodies and used for spraying phase change heat exchanging mediato the heat storage material packaging bodies, and a phase change heat exchanging device arranged above the multi-hole densely arranged spraying devices and used for generating steam, wherein the phase change heat storage media are fused salt with the phase change temperature being 180 DEG C, and are used for storing heat or releasing heat. According to the phase change heat storage heat exchanger, the filling rate of the heat storage tank is increased, the 180 DEG C fused salt is adopted as the heat storage media, and the manufacturing cost is reduced while the heat storage efficiency is improved. A steam generator/heat exchanger is arranged in the heat storage tank, a heat storage and heat exchange integrated system is firmed, and the investment of a heat exchanging pipe and a tank bodydevice of the steam generator is substantially reduced.

Description

technical field [0001] The invention relates to the technical field of solar thermal power generation systems, in particular to a heat storage heat exchanger using 180°C phase-change molten salt and a system thereof. Background technique [0002] Solar energy is a huge treasure house of energy, but the energy density of solar radiation reaching the surface of the earth is very low, and is affected by regular changes in geography, day and night, and seasons, as well as random factors such as cloudy, sunny, cloud, and rain. It is also constantly changing, with notable rarities, discontinuities, and instability. In order to better become a high-quality alternative energy source, improve system power generation efficiency, improve system power generation stability and reliability, and reduce power generation costs, in solar thermal power generation, it is necessary to set up efficient solar thermal collectors and thermal energy storage ( TES (thermal energy storage) device, whe...

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