Energy storage device utilizing temperature difference self-driving loop

Abstract

The invention discloses an energy storage device utilizing a temperature difference self-driving loop. The energy storage device comprises low-level heat exchanger, a high-level heat exchanger, a heatexchanging pipe, a connecting pipeline, an energy storage material and a heat-insulating layer. During energy storage, cold energy or heat energy is transmitted to a circulating working medium in theclosed-type self-driving heat exchanging loop through the high-level heat exchanger or the low-level heat exchanger, then the circulating working medium transmits the cold energy or the heat energy to the energy storage material through the heat exchanger pipe, and the cold energy or the heat energy is stored. During energy releasing, the circulating working medium in the closed-type self-drivingheat exchanging loop absorbs the cold energy or the heat energy stored in the energy storage material through the heat exchanging pipe, and the cold energy or the heat energy is released through thelow-level heat exchanger or the high-level heat exchanger. According to the cold storage and heat storage device, the heat energy and the cold energy such as waste heat (cold), valley electric storedheat and stored cold, and solar energy can be stored and released, self-driving operation without power consumption can be achieved, the energy storage device is suitable for various places where theheat energy and the cold energy need to be stored, and the problem that supply and demand of the heat energy and the cold energy are not matched in the aspect of time is solved.

Description

technical field [0001] The invention belongs to the technical field of energy storage, and in particular relates to an energy storage device which utilizes a temperature difference to self-drive a circuit. Background technique [0002] Entering the 21st century, energy is in short supply, and environmental problems caused by pollutant emissions have become increasingly prominent. In my country, energy saving and emission reduction are all set as an important implementation goal in the 11th to 13th five-year plans, and cold storage and heat storage technology has become an important means of energy saving and emission reduction. For example, valley electricity cold storage in summer and valley electricity heat storage technology in winter, solar molten salt thermal storage power generation, and waste heat storage and reuse in industry, the use of heat storage technology can solve the problem of heat energy (cold energy is also called a kind of heat energy) The mismatch betwe...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the shortcomings and deficiencies of the prior art, the present invention discloses an energy storage device, which can store and release heat such as waste heat (cold), valley electricity cold storage and heat storage, and solar energy, and can realize temperature difference self-driven operation without power consumption It can realize fast and efficient energy storage and release, which is suitable for various systems that need to store thermal energy, and solves the mismatch problem of thermal energy supply and demand in time and space

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