Single-tank fused salt energy storage heating system and method

Abstract

The invention discloses a single-tank fused salt energy storage heating system and method. The single-tank fused salt energy storage heating system comprises a storage tank module, a heat storage andrelease module and which comprises a fused salt storage tank and a heat preservation base module; the storage tank module comprises a fused salt storage tank and a fused salt circulating pump capableof pumping fused salt from the fused salt storage tank; the heat storage and release module comprises a heat storage loop and a heat release heating loop which are used for respectively carrying out heat storage treatment and heat release heating treatment on the fused salt pumped from the fused salt storage tank and returning the treated fused salt to the fused salt storage tank, a first heat exchanger capable of realizing fused salt heat storage is arranged in the heat storage loop, and a second heat exchanger capable of realizing fused salt heat release and heating is arranged in the heat release loop; and the heat preservation base module is arranged at the bottom of the storage tank module and comprises a heat preservation base layer capable of assisting in heat storage and release. The method adopts the single-tank fused salt energy storage heating system for energy storage heating. Energy storage of the heat preservation basic module and energy storage of the fused salt are combined, energy is reasonably utilized while system safety is guaranteed, the heat storage capacity of the system is increased, the use amount of the fused salt is effectively reduced, and the initial investment of the energy storage system is reduced.

Description

technical field [0001] The invention relates to the technical field of molten salt energy storage, and more specifically, to a single-tank molten salt energy storage heating system and an energy storage heating method thereof. Background technique [0002] As a heat storage medium, molten salt has the advantages of high operating temperature and uniform temperature distribution. As a new type of energy storage technology, molten salt energy storage technology has been practically applied in solar thermal power generation projects at home and abroad. It has been a research hotspot of energy storage technology for several years and is highly sought after by the industry. [0003] At present, there are two main types of molten salt heat storage systems: double-tank heat storage system and single-tank heat storage system. The single-tank heat storage system has a small number of equipment and has a significant cost advantage. The single-tank heat storage system can be divided i...

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Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention combines the characteristics of the thermal insulation foundation of a single-tank storage tank and proceeds from the perspective of rational utilization of energy, provides a method that can solve the problem of energy waste caused by forced ventilation of the storage tank foundation, and further solves the problem of single-tank molten salt The energy storage heating system has problems such as unstable output, difficult equipment selection, and high cost. The single-tank molten salt energy storage heating system and its energy storage further solve the problems of single-tank energy storage system dual-pump configuration, system complexity, and difficulty in salt return. heating method

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