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HFC-227ea-containing low-temperature organic mixed working medium for Rankine cycle system

A technology of hfc-227ea and mixed working fluid, which is applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of high risk, flammability and explosion, and achieve the effect of enhancing safety and excellent cycle performance

Inactive Publication Date: 2012-12-12
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although alkanes have good cycle thermal performance, they are extremely flammable and explosive, and have high risks, which limits their further promotion and use.

Method used

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  • HFC-227ea-containing low-temperature organic mixed working medium for Rankine cycle system
  • HFC-227ea-containing low-temperature organic mixed working medium for Rankine cycle system
  • HFC-227ea-containing low-temperature organic mixed working medium for Rankine cycle system

Examples

Experimental program
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preparation example Construction

[0038] The preparation method of the mixed working medium of the present invention is to physically mix the above-mentioned component substances according to different mass ratios at normal temperature.

[0039] The following are specific examples:

Embodiment 1

[0041] Take 20% R227ea and 80% R245ca and mix them physically at room temperature as the circulating working fluid.

Embodiment 2

[0043] Take 30% R227ea and 70% R601 and mix them physically at room temperature as the circulating working fluid.

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Abstract

The invention relates to an HFC-227ea-containing low-temperature organic mixed working medium for a Rankine cycle system, which comprises the following six components: HFC-227ea, R290, HFC-236ea, HFC-245ca, R601 and R601a. The mixed working medium specifically comprises the following components in percentage by mass: R227ea / R245ca (5-95 / 95-5%); R227ea / R601 (5-95 / 95-5%); R227ea / R601a (5-95 / 95-5%); R227ea / R236ea / R245ca (5-95 / 2-80 / 3-93%); R227ea / R236ea / R601 (5-90 / 5-80 / 5-90%); R227ea / R236ea / R601a (5-90 / 3-80 / 5-92%%); R227ea / R245ca / R601 (5-90 / 5-90 / 5-80%); and R227ea / R290 / R601a (5-95 / 0-90 / 5-90%). The invention can enhance the safety of the mixture, and has the advantages of proper heat engineering parameters and favorable cycle performance.

Description

technical field [0001] The invention relates to a mixed working medium. In particular, it relates to a low-temperature organic Rankine cycle system mixed working fluid containing HFC-227ea with an evaporation temperature of 60-130°C. Background technique [0002] Nowadays, the issue of energy saving and emission reduction has attracted more and more attention from all walks of life, and various energy-saving new technologies and equipment have emerged continuously. However, low-temperature waste heat power generation technology is not yet mature enough, because for low-temperature ) The waste heat source cannot be generated by conventional power generation technology. The low boiling point organic Rankine cycle system just makes up for this deficiency. This system can be used for low-temperature waste heat recovery, which can generate electricity or be used as a driving force to drive pumps and fans. In addition, my country's energy utilization rate is low, and in the pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/04
Inventor 李惟毅谈西锋张海佳任慧琴
Owner TIANJIN UNIV
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