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HFC-227ea-containing mixed refrigerant for organic 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 flammability, explosion, and high risk, and achieve enhanced safety, excellent flame retardancy, and cycle good performance effect

Inactive Publication Date: 2014-09-10
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 mixed refrigerant for organic Rankine cycle system
  • HFC-227ea-containing mixed refrigerant for organic Rankine cycle system
  • HFC-227ea-containing mixed refrigerant for organic Rankine cycle system

Examples

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preparation example Construction

[0030] 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.

[0031] The following are specific examples:

Embodiment 1

[0033] Take 20% R227ea and 80% R245ca and mix them physically at room temperature as the circulating working fluid.

Embodiment 2

[0035] Take 30% R227ea and 70% R601 and mix them physically at room temperature as a circulating working fluid.

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PUM

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Abstract

A HFC-227ea-containing mixed refrigerant for an organic Rankine cycle system comprises six compositions, and the six compositions are HFC-227ea, R290, HFC-236ea, HFC-245ca, R601 and R601a, and the mixed refrigerant specifically comprises the following combinations according to corresponding mass ratio: R227ea / R245ca (5-95 / 95-5%); R227ea / R236ea / R245ca (5-95 / 2-80 / 3-93%); and R227ea / R245ca / R601 (5-90 / 5-90 / 5-80%). The mixed refrigerant is capable of improving the safety of a mixture added with the mixed refrigerant, and is appropriate in thermal engineering parameters and excellent in cycle performance.

Description

[0001] This patent application is a divisional application of the patent application with application number 201210319364.7. [0002] The filing date of the original application is: August 31, 2012, the application number is 201210319364.7, and the title of the invention is: low-temperature organic Rankine cycle system mixed working fluid containing HFC-227ea. technical field [0003] The invention relates to a mixed working medium. In particular, it relates to a mixed working fluid in an organic Rankine cycle system containing HFC-227ea with an evaporation temperature of 60-130°C. Background technique [0004] 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 ) waste heat heat source, cannot use conventi...

Claims

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Application Information

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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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