Solid waste-based gradient composite heat storage material and vapor compression coupling system and application method

Abstract

The application provides a solid waste-based gradient composite heat storage material and a steam compression coupling system and an application method, and the system comprises a liquid storage tank, a heat storage material, a heat management unit and a screw pump, the heat management unit comprises a heat exchange device filled with the heat storage material; the liquid storage tank is connected with an input end of a compressor and an inlet of the screw pump respectively, an output end of the compressor is connected with an inlet of a first heat exchange side channel, an outlet of the first heat exchange side channel is connected with the liquid storage tank, an outlet of the screw pump is connected with an inlet of an evaporator, an outlet of the evaporator is connected with an inlet of a second heat exchange side channel of the heat exchange device, an outlet of the second heat exchange side channel is connected with an inlet of a steam turbine and the input end of the compressor respectively, an outlet of the steam turbine is connected with an inlet of a condenser, and an outlet of the condenser is connected with the liquid storage tank; a steam turbine exhaust port and the outlet of the second heat exchange side channel are respectively connected with a heat utilization unit. The application can efficiently, high-capacitively and long-periodically store high-temperature heat energy generated by industrial waste heat or new energy, and realize stable and flexible output of high-quality steam.

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