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. The system comprises a vacuum heat pipe type solar heat collector, a fixed bed adsorption type chemical reaction heat reservoir, an integrated condensation evaporator, a vacuum steam-water separator, a thermocline water storage heat exchanger, a heat demand conveying pipeline and a cold demand conveying pipeline, wherein the fixed bed adsorption type chemical reaction heat reservoir and the thermocline water storage heat exchanger are connected with the vacuum heat pipe type solar heat collector;the integrated condensation evaporator is connected with the fixed bed adsorption type chemical reaction heat reservoir and the thermocline water storage heat exchanger; and the vacuum steam-water separator is connected with the integrated condensation evaporator, the fixed bed adsorption type chemical reaction heat reservoir and the thermocline water storage heat exchanger are connected with theheat demand conveying pipeline, and the integrated condensation evaporator is connected with the cold demand conveying pipeline. Compared with the prior art, the system has the advantages of being high in energy utilization efficiency, capable of meeting the continuous energy supply requirement, high in energy storage density, compact in structural arrangement and the like.

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 kind of green, environmentally friendly renewable energy, which is widely used in the fields of photovoltaic energy conversion, photothermal energy conversion and artificial photosynthetic energy conversion. Generally, due to the difference of solar irradiance index in different geographical locations, the deviation of solar radiant energy in different seasons is large. In the northern hemisphere, the solar irradiance index in summer is much higher than that in winter. In summer, people’s demand for cooling is far greater than that for heat. Normally, solar energy can be used to drive the refrigeration cycle to meet the demand for cooling in summer. However, in winter due to the low solar radiation index, it is difficult to meet the demand for heat. 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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