Heat-Cycle Working Fluid Blend for Low-GWP R410A Replacement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current working fluids for heat cycles, such as R410A, have high global warming potential (GWP) and limited refrigerating capacity, and existing alternatives like HFO-1234yf have low refrigerating capacity and cannot replace R410A in conventional air-conditioning systems.
Innovation Solution
A working fluid composition combining HFO-1123 and HFO-1234yf in specific proportions, ranging from 70 to 100 mass%, with HFO-1123 from 35 to 95 mass%, to achieve balanced refrigerating capacity and low GWP, suitable for replacing R410A in conventional systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If HFO-1234yf is used as a working fluid to reduce GWP, then global warming potential is reduced, but refrigerating capacity becomes insufficient
Solution Approach 1:
The patent combines HFO-1234yf with HFO-1123 in a specific mass ratio (70:30 to 100:0) to create a blended working fluid. This merging allows the composition to inherit the low GWP特性 of HFO-1234yf while gaining sufficient refrigerating capacity from HFO-1123, thereby resolving the contradiction between environmental protection and cooling performance.
Solution Approach 2:
The patent creates a composite working fluid system by combining two different HFO compounds (HFO-1234yf and HFO-1123) in optimized proportions. This composite approach enables the working fluid to exhibit both low global warming potential and adequate refrigerating capacity, which neither component can achieve alone at the required performance level.
2Quantity of substance
If HFO-1123 is used to increase refrigerating capacity, then cooling performance is improved, but critical temperature becomes too low for conventional systems
Solution Approach 1:
The patent merges HFO-1123 (which provides high refrigerating capacity) with HFO-1234yf (which has higher critical temperature) in a controlled mass ratio. This combination allows the working fluid to achieve sufficient cooling performance from HFO-1123 while the HFO-1234yf component raises the overall critical temperature to levels suitable for conventional air-conditioning systems.
3Quantity of substance
If R410A is used to achieve high refrigerating capacity, then cooling performance is improved, but global warming potential increases significantly
Solution Approach 1:
The patent changes the chemical composition parameters by replacing HFC components (high GWP) with HFO components (low GWP). Specifically, it uses HFO-1234yf and HFO-1123 with GWPs of 150 and 143 respectively, compared to R410A's GWP of 2088, thereby dramatically reducing environmental harm while maintaining refrigerating capacity through optimized blending ratios.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
To provide a working fluid for heat cycle having a low global warming potential, which can replace R410A, a composition for a heat cycle system comprising it, and a heat cycle system employing the composition. A working fluid for heat cycle, which comprises trifluoroethylene and 2,3,3,3-tetrafluoropropene, wherein the total proportion of trifluoroethylene and 2,3,3,3-tetrafluoropropene based on the entire amount of the working fluid is from 70 to 100 mass%, and the proportion of trifluoroethylene based on the total amount of trifluoroethylene and 2,3,3,3-tetrafluoropropene is from 35 to 95 mass%, a composition for a heat cycle system comprising the working fluid for heat cycle, and a heat cycle system employing the composition.