Heat-pump-type energy-storage, power-supply and heat-supply method and device

Abstract

The invention provides a heat-pump-type energy-storage, power-supply and heat-supply method and device. According to the heat-pump-type energy-storage, power-supply and heat-supply method and device,a refrigerating heat-storage mode and a heat-supply and power-supply mode are included. When the refrigerating heat-storage mode is adopted, normal-temperature work gas is subjected to adiabatic compression through a compressor, then conducts equal-pressure heat release through a heat storage system, then enters a turbine to conduct adiabatic expansion to do external work, then conducts equal-pressure heat absorption through a cold storage system, and finally serves as a cold source supply to be released to the outside world; and the heat-pump-type energy-storage, power-supply and heat-supplydevice is sequentially connected with a gas inlet device, the compressor, a first heat exchanger, the heat storage system, the turbine, a second heat exchanger, the cold storage system and a gas outlet device in series in the moving direction of the work gas; and on the contrary, the heat-supply and power-supply mode is adopted. Through the method and device with the mutually-reversible function of refrigerating heat-storage and power-supply and heat-supply, the problems of wind abandoning and light abandoning in photovoltaic power generation and wind energy power generation are solved, and the problems such as large diurnal temperature variation in the western region is get rid of while heat storage and power supply are achieved; and warm gas is provided for a community while cold gas isprovided for an enterprise or a factory in the daytime and power supplying is conducted in the nighttime.

Description

technical field [0001] The present invention relates to an energy storage method and its device, in particular to a heat pump energy storage method and device for power supply and heat supply. Background technique [0002] Green energy represented by solar energy and wind energy is a long-term trend of energy development. Green energy has environmental protection and inexhaustible advantages. However, since green energy is generally affected by natural conditions such as weather, seasons, and sunshine, it is difficult to provide stable Energy output, making it difficult to output electricity that matches the grid. Therefore, the problems of abandoning wind and light in green energy are very serious at this stage. In order to allow green energy to output electricity that is evenly distributed in time, it is a better solution to adopt certain energy storage technologies and exchange space for time. On the other hand, the northwestern region of my country has strong sunshine ...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the disadvantages of low efficiency of the traditional electric heating heat storage medium energy storage method, and at the same time solve the problems of wind and light abandonment in photovoltaic power generation and wind power generation, and provide a high-efficiency heat pump energy storage power supply Thermal method and device thereof

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