Composition containing refrigerant including r32, r125, r143a, and r134a and refrigeration method using said composition, method for operating refrigerator, and refrigerator
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Solution Overview
Problem
Current refrigerants, such as R404A, have high global warming potential (GWP) and there is a need for alternatives with equivalent refrigerating capacity but with a lower GWP.
Innovation Solution
A composition of difluoromethane (R32), pentafluoroethane (R125), 1,1,1-trifluoroethane (R143a), and 1,1,1,2-tetrafluoroethane (R134a) in specific concentrations is developed, offering a refrigerant with refrigerating capacity equivalent to R404A and a GWP of 2500 or less.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If R404A refrigerant is used, then refrigerating capacity is maintained, but global warming potential increases
Solution Approach 1:
The patent applies parameter changes by modifying the compositional ratios of HFC components in the refrigerant mixture. Specifically, it optimizes the proportions of R32, R125, R143a, and R134a to achieve a balance between refrigerating capacity and GWP, creating a refrigerant blend that meets both performance requirements and environmental standards.
Solution Approach 2:
The patent employs composite materials by formulating a multi-component HFC refrigerant blend. The composition combines four different hydrofluorocarbon compounds (R32, R125, R143a, and R134a) in specific ratios to create a composite refrigerant mixture that achieves both high refrigerating capacity and reduced GWP compared to conventional refrigerants like R404A.
2Object-affected harmful factors
If alternative refrigerants with low GWP are developed, then environmental impact is reduced, but refrigerating capacity equivalent to R404A is not yet achieved
Solution Approach 1:
The patent systematically varies the compositional parameters of the HFC blend to optimize performance. By adjusting the ratios of R32, R125, R143a, and R134a, the invention identifies specific compositional ranges that simultaneously achieve low GWP (2500 or less) and high refrigerating capacity (95% or more of R404A), resolving the trade-off between environmental friendliness and productivity.
Data Source
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AI summary
Provided is a composition containing a refrigerant that has a refrigerating capacity equivalent to that of widely used R404A, and a low GWP. The composition contains a refrigerant that contains difluoromethane (R32), pentafluoroethane (R125), 1,1,1-trifluoroethane (R143a), and 1,1,1,2-tetrafluoroethane (R134a) in specific concentrations.