Refrigerant Composition with CF3I and CO2 to Replace High-GWP R410A
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Solution Overview
Problem
Existing refrigerants like R410A have a high global warming potential (GWP) and lack alternative compositions with equivalent or superior performance in terms of coefficient of performance (COP) and refrigerating capacity (Cap) to serve as replacements.
Innovation Solution
A refrigerant composition comprising CF3I, CO2 (R744), and at least one compound A selected from trifluoroethylene (HFO-1123), trans-1,2-difluoroethylene [(E)-HFO-1132], cis-1,2-difluoroethylene [(Z)—HFO-1132], fluoroethylene (HFO-1141), and 3,3,3-trifluoropropyne (TFP), optionally with HFC-32, and additional compounds B, to achieve a low GWP and maintain or exceed the performance of R410A.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If R410A is used as refrigerant, then cooling performance is maintained, but global warming potential is high
Solution Approach 1:
The patent changes the chemical composition parameters of the refrigerant by replacing R410A (R32/R125 mixture) with a new composition containing CF3I, CO2, and HFO compounds. This parameter change reduces GWP from 2088 to below 150 while maintaining cooling performance through careful selection of component ratios and properties.
Solution Approach 2:
The patent creates a composite refrigerant composition by combining multiple substances (CF3I, CO2, and HFO compounds) into a new refrigerant mixture. This composite approach allows the system to achieve low GWP while maintaining the required cooling capacity and COP through synergistic effects of the components.
2Object-affected harmful factors
If R32 is used to reduce GWP, then environmental impact is reduced, but alternative compositions with equivalent performance are lacking
Solution Approach 1:
The patent segments the refrigerant composition into distinct functional components: CF3I as the primary refrigerant agent, CO2 as a secondary component, and HFO compounds as performance enhancers. This segmentation allows each component to contribute specific properties that collectively achieve low GWP and high performance.
Solution Approach 2:
The patent creates a universal refrigerant composition that can serve multiple functions: achieving low GWP, maintaining cooling capacity, providing appropriate operating pressure characteristics, and ensuring compatibility with existing refrigeration systems. The combination of CF3I, CO2, and HFO compounds provides multi-functionality that makes this composition a versatile alternative to both R410A and R32.
Data Source
AI summary
The present invention provides a composition comprising a refrigerant (mixed refrigerant) having three types of performance, i.e., a coefficient of performance (COP) and refrigerating capacity (Cap) that are equivalent to or higher than those of R410A, and a sufficiently low GWP. Specifically, the present invention provides a composition comprising a refrigerant, the refrigerant comprising CF3I, CO2 (R744), and at least one compound A selected from the group consisting of trifluoroethylene (HFO-1123), trans-1,2-difluoroethylene [(E)-HFO-1132], cis-1,2-difluoroethylene [(Z)—HFO-1132], fluoroethylene (HFO-1141), and 3,3,3-trifluoropropyne (TFP).