Fluoroalkene Compatibilizer Composition for Refrigerant Lubricant Solubility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current fluorocarbon-based refrigerants, such as CFCs and HFCs, pose environmental concerns due to ozone depletion and high global warming potentials, and their non-chlorine substitutes often lack lubricant compatibility, flammability, and toxicity issues, leading to inefficiencies and safety concerns in refrigeration and heat transfer systems.
Innovation Solution
The use of 1,1,1-trifluoro-3-chloropropene (HFCO-1233zd) as a compatibilizer, which is non-flammable, has low toxicity, and exhibits low ozone depletion and global warming potentials, enhancing lubricant solubility and system efficiency without requiring major engineering changes to conventional vapor compression technology.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If non-chlorine-containing refrigerants (HFCs) are used to replace CFCs, then ozone depletion potential is reduced, but lubricant compatibility deteriorates
Solution Approach 1:
The patent modifies the chemical structure of fluorocarbon refrigerants by introducing specific molecular configurations (such as HFO-1234yf, HFO-1225ye, and their blends with HFC-134a) to change the physical and chemical parameters of the refrigerant-lubricant interaction, thereby improving solubility and compatibility while maintaining low ODP
Solution Approach 2:
The patent employs composite refrigerant formulations by blending multiple fluorocarbon components (HFO-1234yf, HFO-1225ye, HFC-134a) in specific ratios to achieve synergistic effects that simultaneously provide low ozone depletion potential and improved lubricant compatibility that single components cannot achieve alone
2Object-affected harmful factors
If HFC refrigerants are used to replace CFCs, then environmental safety is improved, but global warming potential increases
Solution Approach 1:
The patent selects fluorocarbon components with specific molecular weights and structures (HFO-1234yf with 6 carbons, HFO-1225ye with 5 carbons) that have inherently lower GWP values compared to traditional HFCs, while maintaining the necessary thermodynamic properties for refrigeration cycles
3Power
If fluorocarbon-based refrigerants are used, then heat transfer efficiency is improved, but flammability and toxicity issues arise
Solution Approach 1:
The patent introduces fluorine atoms at specific positions in the carbon chain structure of the refrigerant molecules, creating localized regions with different chemical properties that enhance heat transfer efficiency while the overall molecular structure maintains non-flammability and low toxicity characteristics
Data Source
AI summary
Use as a compatibilising agent of a composition comprising at least one fluoroalkene having the Formula I: XCFzR3-7 (I) where X is a C2 to C5 unsaturated, substituted or unsubstituted, radical, each R is independently Cl, F, Br, I or H, and z is 1 to 3.