Four-Component Refrigerant Composition for Low-GWP Cooling Systems
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Solution Overview
Problem
Current refrigerants like R410A have high global warming potential (GWP), necessitating the development of low-GWP alternatives for air conditioning systems.
Innovation Solution
A refrigerant composition comprising trans-1,2-difluoroethylene (HFO-1132(E)), difluoromethane (R32), 1,3,3,3-tetrafluoropropene (R1234ze), and carbon dioxide (CO2), which offers a balance of low GWP and high refrigerating capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If R410A is used as refrigerant, then refrigerating capacity is maintained, but global warming potential increases
Solution Approach 1:
The patent applies composite refrigerant formulation by combining multiple components (HFO-1132(E), R32, R1234ze, and CO2) in specific proportions to create a mixed refrigerant that achieves low GWP while maintaining adequate refrigerating capacity. This composite approach allows the refrigerant mixture to balance environmental performance with cooling effectiveness
Solution Approach 2:
The patent modifies refrigerant composition parameters by selecting specific components with low GWP characteristics and determining optimal concentration ranges for each component. By adjusting the compositional parameters within specified ranges, the refrigerant achieves the dual goal of reduced environmental impact and maintained refrigerating capacity
2Object-affected harmful factors
If R32 is used to reduce GWP, then global warming potential decreases, but refrigerating capacity becomes insufficient
Solution Approach 1:
The patent enhances R32 by formulating it as part of a composite refrigerant mixture containing HFO-1132(E), R1234ze, and CO2 in specific proportions. This composite formulation compensates for R32's insufficient refrigerating capacity while maintaining its low GWP advantage, achieving a balance between environmental performance and cooling effectiveness
Solution Approach 2:
The patent merges R32 with other refrigerant components (HFO-1132(E), R1234ze, and CO2) to create a synergistic mixture. The combination allows the low-GWP characteristics of R32 to be preserved while the collective mixture provides enhanced refrigerating capacity that neither component could achieve alone
Data Source
AI summary
An object is to provide a novel low-GWP mixed refrigerant.Provided as a means for a solution is a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132(E)), difluoromethane (R32), 1,3,3,3-tetrafluoropropene (R1234ze), and carbon dioxide.