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Low-temperature waste heat power generation system

A technology of power generation system and low temperature waste heat, which is applied in the field of organic Rankine cycle system and can solve the problems of low efficiency of the cycle system and so on.

Inactive Publication Date: 2012-10-17
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to solve the problem of inefficiency in the circulatory system, people have been searching for the ideal technical solution

Method used

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  • Low-temperature waste heat power generation system
  • Low-temperature waste heat power generation system
  • Low-temperature waste heat power generation system

Examples

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Effect test

Embodiment 1

[0017] Such as figure 2 As shown, a low-temperature waste heat power generation system includes an evaporator 1, an expander 3, a condenser 6, a working medium pump 7 and an ejector 5, wherein the outlets of the working medium pump 7 are respectively connected to the evaporator 1 The inlet of the working fluid and the high-pressure inlet of the ejector 5, the outlet of the working fluid of the evaporator 1 is connected to the inlet of the expander 3, and the outlet of the expander 3 is connected to the low-pressure inlet of the ejector 5 , the expander 3 is connected to the generator 4, the medium pressure outlet of the ejector 5 is connected to the inlet of the condenser 6, and the outlet of the condenser 6 is connected to the inlet of the working medium pump 7.

[0018] The system adopts a closed Rankine cycle, and uses organic liquid R245fa instead of water as a circulating working medium to improve heat exchange efficiency. The organic working medium enters the evaporator...

Embodiment 2

[0029] The difference between this implementation and embodiment 1 is: as image 3 As shown, a low temperature waste heat power generation system, the outlet of the working medium pump 7 is connected to the working medium inlet of the evaporator 1, and the working medium outlet of the evaporator 1 is respectively connected to the high pressure inlet of the ejector 5 and the Describe the inlet of the expander 3.

[0030] In the circulation process of the present invention, the liquid working medium is boosted in the working medium pump 7, enters the evaporator 1 and absorbs heat from the low-temperature heat source 2 to generate organic vapor, a part of the organic vapor enters the high-pressure inlet of the ejector 5, and a part of the organic vapor Push the expander 3 to rotate and do work, and drive the generator 4 to generate electricity. The organic vapor that has done work in the expander 3 becomes exhaust gas and enters the low-pressure inlet of the injector 5. The orga...

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Abstract

The invention provides a low-temperature waste heat power generation system, comprising an evaporator, an expansion machine, a power generator, a condenser, a working medium pump and an injector, wherein the power generator is connected with the expansion machine, an outlet of the working medium pump is connected with an inlet of the evaporator, an outlet of the evaporator is connected with an inlet of the expansion machine, the outlet of the working medium pump or the outlet of the evaporator is connected with a high-pressure inlet of the injector, an outlet of the expansion machine is connected with a low-voltage inlet of the injector, a middle-pressure outlet of the injector is connected with an inlet of the condenser, and an outlet of the condenser is connected with the inlet of the working medium pump. The low-temperature waste heat power generation system disclosed by the invention has the advantages of scientific design, strong practicability, high power generation efficiency and high low-temperature waste heat utilization rate.

Description

technical field [0001] The invention relates to an organic Rankine cycle system, in particular to a low-temperature waste heat power generation system. Background technique [0002] The organic Rankine cycle is a closed Rankine cycle with low-boiling point organic matter as the working fluid. Due to its low evaporation and condensation temperature, high thermal efficiency and relatively simple equipment, it is considered to be an effective low-temperature waste heat power generation technology. like figure 1 As shown: the traditional organic Rankine cycle system is composed of evaporator 1 , expander 3 , generator 4 connected to the expander 3 , condenser 6 and working medium pump 7 . The liquid working medium absorbs heat from the low-temperature heat source 2 in the evaporator to generate organic vapor. The organic vapor drives the expander to rotate and do work, driving the generator to generate electricity. The exhausted gas that has done work in the expander enters the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K25/10
Inventor 魏新利马新灵孟祥睿王慧
Owner ZHENGZHOU UNIV
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