Non-azeotropic mixed working medium direct contact type heat exchange power generation system

Abstract

The invention provides a non-azeotropic mixed working medium direct contact type heat exchange power generation system, and belongs to the technical field of energy and environment. The non-azeotropicmixed working medium direct contact type heat exchange power generation system comprises a turbine expander, a condenser, a liquid storage tank, a pressure stabilization tank, a dispersed phase working medium flow circulation loop and a continuous phase fluid flow circulation loop which are connected in sequence, wherein the turbine expander, the condenser, the liquid storage tank, the pressure stabilization tank and a direct contact type evaporator are connected in series to form the dispersed phase working medium flow circulation loop, and a heat source and the direct contact type evaporator are connected in series to form the continuous phase fluid flow circulation loop; the continuous phase fluid and the dispersed phase working medium are subjected to heat exchange in the direct contact type evaporator, the dispersed phase working medium enters the turbine expander to drive a power generator to generate electricity, and after acting, the waste steam is condensed into the liquid storage tank to complete circulation; and the continuous phase fluid returns to the heat source to complete circulation. The continuous phase fluid and the dispersed phase working medium are in direct contact heat exchange, the heat exchange process and the phase change separation process are simultaneously carried out, the gas-liquid two-phase flow is violently disturbed, the heat transfer area isincreased, the heat resistance is reduced, the heat energy utilization rate and heat exchange efficiency are high, the circulation process is close to lorentz circulation, and the power generation efficiency of the system is improved.

Description

technical field [0001] The invention belongs to the field of energy and environment technology, and more specifically relates to a non-azeotropic mixed working fluid direct contact heat exchange power generation system. Background technique [0002] The non-azeotropic working fluid is composed of two or more pure organic working fluids with different boiling points. Due to the different boiling points of each component, the components are constantly changing during the phase transition process, and the evaporation or condensation temperature also changes accordingly. Therefore, there is a temperature glide during the phase transition of the zeotropic mixture, and the difference between the dew point temperature and the bubble point temperature is called the glide temperature. According to the temperature glide characteristics of the non-azeotropic mixed working fluid, in the countercurrent heat exchanger, the temperature curve between the heat exchange fluid and the working ...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a non-azeotropic mixed working medium direct contact heat exchange power generation system, aiming to solve the technical problems of low heat transfer performance and poor cycle efficiency of the current zeotropic mixed working medium system

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