Low temperature solar energy-biomass energy combined heat and power system

Abstract

The invention relates to a low temperature solar energy-biomass energy combined heat and power system and a generating process. The system comprises a heat transfer fluid (such as heat transfer oil, ionic liquid, and water) circulation loop, a working medium circulation loop of an organic Rankine cycle, a heating furnace smoke discharge pipeline, a hot water heating loop and a cooling water loop. A heating furnace is used for supplementing heat for the heat transfer fluid or used as a standby heat source, and the heating surface uses dimethyl ether, heavy oil, biomass or low-grade cheap fuel made from the biomass; propane (R290), pentafluoropropane (R245fa) and the like are used as circulation working media; the exhaust heat regeneration quantity of the organic Rankine cycle can be adjusted according to the heating demand of a user; and a solar concentrator of the system is a solar concentration and waste heat recovery integrated vacuum flat-plate concentrator with a heat regenerating measure at the bottom, and the waste heat of exhaust smoke of the heating furnace can be recovered while fully using solar energy. The system can directly and efficiently convert a large quantity of low-grade biomass fuel and low-density solar energy into electric energy and supplies heat to users at the same time.

Description

technical field [0001] The invention relates to a cogeneration system and technology utilizing solar energy and biomass energy, which is a new method and technology for efficient utilization of solar energy at low temperature and biomass energy, and belongs to the technical field of energy and environment. Background technique [0002] Electricity production is playing an increasingly important role in industrial and agricultural production. It can be said that electricity supply is the bottleneck of the development of the whole society. For a century, the power industry has been heavily dependent on coal and other fossil fuels, although in recent years with the application of technologies such as supercritical Rankine cycle, the efficiency of coal power has gradually increased (now the latest technology in the world has reached nearly 50% Thermal efficiency), but the power industry is still the main source of serious environmental pollutants such as carbon dioxide and sulfu...

AI Technical Summary

Problems solved by technology

However, the initial investment of high-temperature solar thermal power generation systems is extremely high, often several times that of thermal power generation systems with the same installed capacity. It also has high requirements for equipment and materials, and the installation period is long. These unfavorable factors have seriously restricted high-temperature solar thermal power. Construction and investment of power generation system

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