Distributed solar energy combined heating/cooling-power system

Abstract

The invention relates to a distributed solar energy combined heating / cooling-power system, comprising a concentrator, a heat absorber on the focus of the concentrator, a heat exchanger and a heat storage water tank, wherein the heat exchanger and the heat storage water tank are circularly connected and a circulating water pump is arranged between the heat exchanger and the heat storage water tank; and the heat storage water tank is also circularly connected with a waste heat refrigerating device. The system also comprises a generating system, electric conversion equipment and a heat regenerator, wherein through closed Brayton circulation generation, the generating system comprises a turbomachine, a generator and a compressor which are connected in sequence; the generator is connected with the electric conversion equipment; and the gas in the heat absorber passes through the turbomachine, the heat regenerator, the heat exchanger and the compressor in sequence and finally returns to the heat absorber via the heat regenerator, thus forming a circulation loop. The system utilizes the solar energy and through closed Brayton circulation generation, uses the circulating waste heat for direct heating or refrigerating by way of refrigerating with lithium bromide waste heat, thus realizing combined heating / cooling-power and improving the utilization efficiency of the solar energy.

Description

technical field [0001] The invention relates to the field of solar energy utilization and the field of building heating, ventilating and air-conditioning, in particular to a distributed solar heating / cooling-electricity combined power supply system. Background technique [0002] Currently electricity is mainly generated by fossil energy (coal, oil and natural gas), but there are two problems as follows. On the one hand, fossil energy is non-renewable and faces the problem of gradual depletion; on the other hand, the use of fossil energy will generate a large amount of pollution emissions. Modern public buildings and many families use air-conditioning systems to achieve a comfortable living and working environment. Usually, the central air-conditioning system is driven by electricity or oil or gas boilers, and it is difficult to realize the joint supply of heat / cooling and electricity at the same time. Some small heating / cooling-electricity cogeneration systems are realized...

AI Technical Summary

Problems solved by technology

Developed countries have carried out relevant research work on solar thermal power cycle power generation and large-scale experiments in desert areas, but have not yet combined it with cooling / heating for combined heat / cold-power supply in urban buildings

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