A high-density solar energy storage and continuous energy supply system

Abstract

The invention relates to a high-density solar energy storage and continuous energy supply system, comprising a vacuum heat pipe solar heat collector, a fixed bed adsorption chemical reaction heat storage device, an integrated condensation evaporator, a vacuum steam-water separator, and a thermocline water storage The heat exchanger, the heat demand transmission pipeline and the cold demand transmission pipeline, the fixed bed adsorption chemical reaction heat storage device and the thermocline water storage heat exchanger are respectively connected with the vacuum heat pipe solar heat collector; The integrated condensing evaporator is connected to the fixed bed adsorption chemical reaction heat storage and the thermocline water storage heat exchanger respectively; the vacuum steam-water separator is connected to the integrated condensing evaporator, and the fixed bed adsorption chemical reaction heat storage The heat exchanger and the thermocline water storage heat exchanger are respectively connected to the heat demand transmission pipeline, and the integrated condensing evaporator is connected to the cold demand transmission pipeline. Compared with the prior art, the invention has the advantages of high energy utilization efficiency, meeting continuous energy supply requirements, high energy storage density, and compact structure arrangement.

Description

technical field [0001] The invention relates to the technical field of solar energy storage, in particular to a high-density solar energy storage and continuous energy supply system. Background technique [0002] Solar energy is a green and environmentally friendly renewable energy, which is widely used in the fields of photoelectric energy conversion, photothermal energy conversion and artificial photosynthetic energy conversion. Generally, due to the difference in solar radiation index in different geographical locations, the solar radiation energy varies greatly in different seasons, and the solar radiation index in summer in the northern hemisphere is much higher than that in winter. In summer, people's demand for cooling is far greater than that for heat. Usually, solar energy can be used to drive refrigeration cycles in summer to meet the demand for cooling, but in winter, it is difficult to meet the demand for heat due to the low solar radiation index. demand. There...

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Problems solved by technology

This technology uses adsorption chemical reaction to store solar energy, which has the advantages of high storage density and small heat dissipation loss. The system is designed with cooling towers, high and low pressure evaporators / condensers, and uses the heat of the high-temperature heat storage condenser in winter for low-temperature heat release. The heat source of the evaporator, this design does increase the energy storage density at low temperatures, but when the system does not use heat in summer, the heat of the high-temperature heat storage condenser needs to be released to the environment through the cooling tower, which equivalently reduces the overall energy. usage efficiency

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