Organic Rankine circulating system of internally-disposed heat pump using mixed organic working medium

Abstract

Discloses is an organic Rankine circulating system of an internally-disposed heat pump using a mixed organic working medium. A mixed organic working medium input end of an expander is connected with an output end of an ejector through a pipeline while an output end of the same is connected with an input end of an ORC condenser through a pipeline, an output end of the ORC condenser is connected with an input end of a gas-liquid separator through a pipeline, a liquid-phase output end of the gas-liquid separator is connected with an input end of a working medium pump through a pipeline, an output end of the working medium pump is connected with an input end of a high-temperature evaporator through a pipeline, a gas-phase output end of the gas-liquid separator is connected with a third port of a four-way valve through a pipeline, a first port of the four-way valve is connected with an input end of the ejector through a pipeline while a second port of the same is connected with one end of a heat pump condenser through a pipeline, a fourth port of the four-way valve is connected with one end of a lower-temperature evaporator through a pipeline, an output end of the high-temperature evaporator is connected with the input end of the ejector through a pipeline, and the other end of the lower-temperature evaporator is connected with one end of the heat pump condenser through a pipeline. By the organic Rankine circulating system, adjusting of ingredient concentration of the mixed organic working medium in a same system is realized.

Description

technical field [0001] The invention relates to an organic Rankine cycle system. In particular, it relates to an organic Rankine cycle system using a built-in heat pump mixed with organic working fluid. Background technique [0002] With the increasing pressure on energy and the environment, low-grade waste heat from industrial life, waste heat and renewable heat have gradually attracted people's attention due to their huge amount. Organic Rankine Cycle (ORC) system, as a technology that can efficiently and environmentally friendly convert low-grade thermal energy into electrical energy, has become a hotspot in the research of low-grade energy utilization. [0003] Heat pump is an efficient heating and cooling technology. Using heat pump technology, it can often generate heat or cold that is several times the input energy. Under suitable conditions, the combination of heat pump and organic rankine cycle technology for cogeneration of heat, power and cooling can make up for...

AI Technical Summary

Problems solved by technology

However, when the mixed organic working fluid is applied to the system, the system cannot flexibly adjust the component concentration of the mixed organic working fluid to adapt to the characteristics of the heat transfer cycle and power generation cycle in the system.

At the same time, in the process of life and production, users often have the demand for heating and cooling at the same time, such as indoor air conditioning and domestic hot water demand at the same time, and the existing systems often cannot meet this demand

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