Thermoelectricity energy storage distributed heat supply system

Abstract

The invention discloses a thermoelectricity energy storage distributed heat supply system. The thermoelectricity energy storage distributed heat supply system comprises a heat pump system, a heat storage system and a heat supply system body. The heat pump system comprises a motor, a compressor, a heat storage heat exchanger and an evaporator. The heat storage system comprises a low-temperature storage tank and a high-temperature storage tank. An output shaft of the motor is connected with a drive shaft of the compressor. A working medium outlet of the compressor communicates with a heat releasing side inlet of the heat storage heat exchanger. A heat releasing side outlet of the heat storage heat exchanger communicates with a heat absorbing side inlet of the evaporator. A heat absorbing side outlet of the evaporator communicates with a working medium inlet of the compressor. A heat absorbing side outlet of the heat storage heat exchanger communicates with a medium inlet of the high-temperature storage tank. A medium outlet of the high-temperature storage tank communicates with a heat releasing side inlet of the heat supply system body. A heat releasing side outlet of the heat supply system body communicates with a medium inlet of the low-temperature storage tank. A medium outlet of the low-temperature storage tank communicates with a heat absorbing side inlet of the heat storage heat exchanger. By means of the system, electric power or renewable energy source electric power generated when a power grid load is in the trough can be stored.

Description

technical field [0001] The invention belongs to the field of distributed energy storage heating, and relates to a thermoelectric energy storage distributed heating system. Background technique [0002] Affected by the laws of human production and life, the fluctuation of grid load has obvious peak and valley characteristics. Thermal power plants need to undertake the responsibility of peak regulation and often need to operate with variable load. Thermal power plants are less efficient under low-load operation, resulting in increased coal consumption and pollutant emissions for power supply. [0003] In recent decades, renewable energy such as wind energy, solar energy, and tidal energy has developed rapidly as a clean energy source, and its proportion in the world's energy structure is getting higher and higher. The installed capacity of renewable energy in my country has increased rapidly. However, renewable energy sources such as wind energy and solar energy have discont...

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Problems solved by technology

However, renewable energy sources such as wind energy and solar energy have discontinuous, unstable, and uncontrollable unsteady characteristics. In addition, the dislocation contradiction between the distribution of high-quality wind and light resources in my country and the distribution of the center of gravity of power loads leads to the abandonment of wind and light. The problem has always been accompanied by the development of my country's wind power and photovoltaic industries, resulting in huge energy waste. Therefore, there is an urgent need for a system that can store power from low-load grids or renewable energy to achieve rational use of power.

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