Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Non-flammable mixed refrigerant applicable to temperature zone from -60 to -100 DEG C

A mixed refrigerant and temperature zone technology, applied in the direction of heat exchange materials, chemical instruments and methods, can solve the problems of low flammability and high greenhouse effect

Inactive Publication Date: 2017-11-21
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
View PDF6 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of this, it is necessary to address the defects in the prior art and provide a non-flammable mixed refrigerant suitable for the temperature range of -60 to -100°C, aiming to solve the problem of cryogenic mixed refrigerants provided by the prior art. Technical issues with low flammability and high greenhouse effect

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Non-flammable mixed refrigerant applicable to temperature zone from -60 to -100 DEG C
  • Non-flammable mixed refrigerant applicable to temperature zone from -60 to -100 DEG C
  • Non-flammable mixed refrigerant applicable to temperature zone from -60 to -100 DEG C

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0029] Prepare the non-flammable multi-component mixed refrigerant of the present invention that operates in the temperature range of -70°C. The minimum heat transfer temperature difference inside the heat exchanger is 1K, and the ambient temperature is 27°C. The working medium concentration and performance of the non-flammable multi-component mixed refrigerant are shown in the table below :

[0030]

Embodiment 4-6

[0032] Prepare a non-flammable multi-component mixed refrigerant that operates in the temperature range of -86°C. The minimum heat transfer temperature difference inside the heat exchanger is 1K, and the ambient temperature is 27°C. The concentration and performance of the non-flammable multi-component mixed refrigerant are shown in the following table:

[0033]

[0034]

Embodiment 7-9

[0036] Prepare a non-flammable multi-component mixed refrigerant that operates in the temperature range of -100°C. The minimum heat transfer temperature difference inside the heat exchanger is 1K, and the ambient temperature is 27°C. The concentration and performance of the non-flammable multi-component mixed refrigerant are shown in the following table:

[0037]

[0038]

[0039]In the above embodiments, the regenerative refrigeration system with non-flammable mixed refrigerants can safely and efficiently realize cooling in the temperature range of -60 to -100°C. Compared with the existing cryogenic mixed refrigerants, it has no Flammability, and the overall low greenhouse effect, no ozone depletion effect, has significant advantages.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a non-flammable mixed refrigerant applicable to a temperature zone from -60 to -100 DEG C. The non-flammable mixed refrigerant comprises at least one selected from a group consisting of cis-1,1,1,4,4,4-hexafluorobutene, trans-1,1,1,4,4,4-hexafluorobutene, 1-chloro-3,3,3-trifluoropropene, cis-1,3,3,3-tetrafluoropropene, 1,1,1,2,2,3,4,5,5,5-decafluoropentane, perfluorobutane and perfluoropentane, at least one selected from a group consisting of perfluoropropane, pentafluoroethane, 1,1,2,2-tetrafluoroethane, 1,1,1,2-tetrafluoroethane, difluoromethane, 1,1,1-trifluoroethane, trifluoroiodomethane, 1,1,1,2,3,3,3-heptafluoropropane, 1,1,1,2,3,3-hexafluoropropane and 1,1,1,3,3-pentafluoropropane, at least one selected from a group consisting of trifluoromethane and perfluoroethane, and perfluoromethane. The non-flammable mixed refrigerant provided by the invention can safely and efficiently realize cooling in a temperature range of -60 to -100 DEG C, does not have flammability at all, and is low in overall greenhouse effect and free of ozone depletion effect.

Description

technical field [0001] The invention belongs to the technical field of refrigerants, and in particular relates to a nonflammable mixed refrigerant suitable for a temperature range of -60 to -100 DEG C. Background technique [0002] At present, multivariate mixed working fluid throttling refrigerators using heat recovery measures have been widely used in the fields of energy, chemical industry, and low-temperature engineering to realize deep cooling of devices and liquefaction of industrial gases, such as low-temperature refrigerators and natural gas liquefaction. In addition to the refrigeration system process and hardware facilities such as compressors and heat exchangers, the most critical part of this refrigeration technology is the multi-component mixed refrigerant. [0003] Due to the limitations of the basic physical parameters such as the boiling point and freezing point temperature of the components, and other physical and chemical properties such as the flammability...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/04
CPCC09K5/045C09K2205/122C09K2205/126C09K2205/128C09K2205/22
Inventor 公茂琼赵延兴
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com