R-1225ye(E) Refrigerant Blend for Low-GWP Cooling Replacement
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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 refrigerants with zero ozone depletion potential and low global warming potential.
Innovation Solution
Compositions comprising (E)-1,2,3,3,3-pentafluoro-1-propene (R-1225ye(E)), HFO-1234yf, R-32, and a compound selected from R-125 and CO2, or a mixture thereof, are used to replace existing refrigerants in refrigeration, air conditioning, and heat pump systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If HCFCs or HFCs are used as refrigerants, then cooling and heating capabilities are achieved, but ozone depletion and global warming occur
Solution Approach 1:
The patent changes the chemical composition parameters by using HFO-1234yf (with GWP less than 150) in combination with R-1225ye(E), R-32, and R-125 or CO2. This parameter change in refrigerant composition achieves the desired cooling and heating capabilities while reducing the harmful environmental parameters (ODP and GWP) compared to conventional HCFC or HFC refrigerants.
Solution Approach 2:
The patent employs a composite refrigerant formulation combining multiple components: HFO-1234yf as the base refrigerant with low GWP, R-1225ye(E) for performance enhancement, R-32 for efficiency, and R-125 or CO2 as additional components. This composite approach maintains reliable cooling and heating capabilities while achieving low environmental impact, resolving the contradiction between performance and environmental harm.
2Object-generated harmful factors
If new refrigerant compositions are developed to reduce environmental impact, then ozone depletion potential and global warming potential are reduced, but compatibility with existing systems and maintenance of cooling/heating capacity may be compromised
Solution Approach 1:
The patent optimizes the compositional parameters within specific ranges: HFO-1234yf at 5-80 wt%, R-1225ye(E) at 10-40 wt%, R-32 at 5-30 wt%, and R-125 or CO2 at 5-20 wt%. These parameter adjustments ensure that the low GWP requirement is met while maintaining cooling and heating capacities comparable to traditional refrigerants, thus resolving the contradiction between environmental performance and system reliability.
Solution Approach 2:
The patent assigns specific functional roles to different components at optimized concentrations: HFO-1234yf provides the low GWP foundation, R-1225ye(E) enhances performance in specific operating conditions, R-32 contributes to efficiency, and R-125 or CO2 fine-tunes the thermodynamic properties. This localized optimization of each component's contribution ensures both low environmental impact and maintained cooling/heating capacity.
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
These compositions provide effective cooling and heating capabilities while minimizing environmental impact by reducing ozone depletion potential and global warming potential, maintaining comparable cooling and heating capacities to traditional refrigerants.
Implementation Method 1
condensing a composition provided herein and thereafter evaporating said composition
Implementation Method 2
evaporating said composition in the vicinity of a body to be cooled
Implementation Method 3
evaporating a composition provided herein and thereafter condensing said composition in the vicinity of a body to be heated
Implementation Method 4
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)), HFO-1234yf, R-32, and, one or more additional components selected from R-125 and CO2, that are useful in refrigeration, air conditioning, or heat pump systems. Methods of replacing R-22, R-407C, or R-404A in refrigeration, air conditioning, or heat pump systems are also provided.