Mixed refrigerant containing 1,1-difluoroethane

A technology of mixing refrigerant and difluoroethane, applied in heat exchange materials, chemical instruments and methods, etc., can solve the problems of environmental damage, excessive GWP value of pure R134a refrigerant, etc., to reduce flammability, reduce The effect of initial investment and high system performance

Inactive Publication Date: 2015-11-11
TIANJIN UNIV
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] What the present invention aims to solve is the technical problem that the GWP value of the pure R134a refrigerant is too large and is destructive to the environment. It provides a new low-GWP mixed refrigerant containing 1,1-difluoroethane (R152a), After mixing R152a with HFO refrigerants, it can reduce the flammability of R152a,

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
  • Mixed refrigerant containing 1,1-difluoroethane
  • Mixed refrigerant containing 1,1-difluoroethane
  • Mixed refrigerant containing 1,1-difluoroethane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: R152a, R134a and R1234yf are uniformly mixed at room temperature at a mass ratio of 10:10:80 using general physical methods to prepare a mixed refrigerant.

Embodiment 2

[0019] Example 2: R152a, R134a and R1234yf are uniformly mixed at room temperature at a mass ratio of 10:30:60 using general physical methods to prepare a mixed refrigerant.

Embodiment 3

[0020] Example 3: R152a, R134a and R1234yf are uniformly mixed at room temperature at a mass ratio of 10:50:40 using general physical methods to prepare a mixed refrigerant.

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 belongs to the technical field of refrigerants and discloses a mixed refrigerant containing 1,1-difluoroethane. 1-difluoroethane(R152a), 2,3,3,3-tetrafluoropropene(R234yf) and 1,1,1,2-tetrafluoroethane(R134a) form a tertiary mixture. The mixed refrigerant can reduce flammability of the R152a and enhance safety performance of the R152a, the dosage of HFO refrigerants can be reduced, the original investment cost of the refrigerant is lowered, and the environmental friendliness and safety performance of the mixed refrigerant are good. Besides, in work of a real system, the filling of the novel mixed refrigerant can be performed by slightly modifying a pure R134a refrigerating system.

Description

technical field [0001] The invention belongs to the technical field of refrigerants, and in particular relates to a mixed refrigerant refrigerant containing 1,1-difluoroethane (R152a). Background technique [0002] In recent years, the international community has formulated a series of laws and regulations to limit the use of high global warming potential (GWP) refrigerants. On May 20, 2014, the European Commission issued regulations on fluorinated greenhouse gases (F-Gas), and the new regulations were officially implemented on January 1, 2015. reduced to one-third of today's levels. To achieve this goal, the supply of hydrofluorocarbons (HFCs) is reduced to one third of 2015 levels by 2030. For some refrigeration air conditioners and other products containing F-Gas, the European Commission has listed a cut-off timetable to impose stricter restrictions on the use of refrigerants through the GWP value, which stipulates that after January 1, 2015, charging Household refrige...

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
IPC IPC(8): C09K5/04
Inventor 李敏霞马一太代宝民陈雪龙
Owner TIANJIN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap