Heat transfer compositions comprising r-1225ye(e)
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Solution Overview
Problem
Current refrigerants, such as HCFCs and HFCs, contribute to ozone depletion and global warming, necessitating the development of alternatives with no ozone depletion potential and low global warming impact.
Innovation Solution
A composition comprising (E)-1,2,3,3,3-pentafluoro-1-propene (R-1225ye(E)), R-134a, and R-1234ze(E) is proposed for use in refrigeration, air conditioning, and heat pump systems, offering a replacement for existing refrigerants while maintaining cooling and heating capacities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If HCFCs or HFCs are used as refrigerants, then cooling and heating performance is maintained, but ozone depletion and global warming occur
Solution Approach 1:
The patent changes the chemical composition parameters by using HFO-1225ye(E) as the primary component (at least 50 wt%) instead of traditional HCFCs or HFCs. This chemical substitution maintains the refrigerant's thermodynamic properties and cooling/heating performance while eliminating ozone depletion potential and significantly reducing global warming potential, thus resolving the contradiction between environmental harm and performance reliability
Solution Approach 2:
The patent creates a composite refrigerant composition by combining HFO-1225ye(E) with other compatible refrigerants (such as HFO-1234ze(E), HFC-134a, or HFC-125) in specific ratios. This composite approach allows the mixture to maintain the desired cooling and heating performance characteristics while achieving low GWP and zero ODP, effectively resolving the contradiction between environmental protection and system reliability
2Object-affected harmful factors
If new refrigerant compositions are developed to reduce environmental impact, then global warming potential is reduced, but compatibility with existing systems and performance may be compromised
Solution Approach 1:
The patent adjusts the compositional parameters by formulating HFO-1225ye(E) as the dominant component (at least 50 wt%) with specific amounts of complementary refrigerants. This parameter optimization ensures the new composition achieves low GWP while maintaining thermodynamic performance and compatibility with existing refrigeration system components, thereby resolving the contradiction between environmental benefits and system adaptability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The composition provides comparable cooling and heating performance to existing refrigerants with significantly reduced global warming potential, making it a suitable replacement that addresses environmental concerns.
Implementation Method 1
condensing a composition provided herein and thereafter evaporating said composition in the vicinity of a body to be cooled
Implementation Method 2
evaporating a composition provided herein and thereafter condensing said composition in the vicinity of a body to be heated
Data Source
AI summary
The present application relates to compositions comprising (E)-1,2,3,3,3-pentafluoro-1-propene (i.e., R-1225ye(E) or HFO-1225ye(E)) that are useful in refrigeration, air conditioning, or heat pump systems. Methods of replacing R-1234ze(E) in refrigeration, air conditioning, or heat pump systems are also provided.