Organic Rankine cycle power generation system capable of changing working medium

Abstract

The invention provides an organic Rankine cycle power generation system capable of changing a working medium. The organic Rankine cycle power generation system capable of changing the working medium comprises a main body part and a working medium charging part, the main body part comprises an evaporator, an expansion generator, a condenser and a working medium pump; the evaporator is used for absorbing low-temperature waste heat source heat of an input working medium to generate steam and inputting the steam and the working medium into the expansion generator; the expansion generator is used for doing work and generating power by utilizing steam, discharging the steam and outputting the working medium after power generation; the condenser is used for carrying out heat exchange on the steamdischarged by the expansion generator through cooling liquid to obtain liquid water and output the working medium; the working medium pump is used for conveying the liquid water and the working medium back into the evaporator; the working charging medium part comprises a rectifying tower and an adjusting pump; the rectifying tower is used for separating and recovering the working medium of the main body part and inputting the recovered working medium into a working medium tank for storage; and the adjusting pump is used for adding the working medium from the working medium tank to the main body part and adjusting the type and proportion of the added working medium. The organic Rankine cycle power generation system capable of changing the working medium can adjust the working medium type and the mixing ratio according to the heat source condition, and therefore the optimal power generation efficiency is achieved.

Description

technical field [0001] The invention relates to the technical field of organic Rankine cycle power generation, in particular to an organic Rankine cycle power generation system with variable working fluid. Background technique [0002] Energy is the cornerstone of the progress and development of human society, and the development of a country and society must be accompanied by a large amount of energy consumption. In the 1970s, when the oil crisis broke out, people realized the importance of energy and began to explore the use of new energy and the research of new technologies. In industrial production, a large amount of medium and low temperature waste heat has not been fully utilized, resulting in a large amount of energy and economic losses. With the gradual aggravation of environmental problems and energy shortages, Organic Rankine Cycle (ORC) technology as a As an effective way to recover low-grade heat energy, it has gradually been paid attention to by researchers in ...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a variable working fluid organic rankine cycle power generation system to solve the problems of the existing organic rankine cycle with single type of working fluid, great environmental hazards and poor system operation efficiency

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