Composition containing refrigerant, use of same, refrigerator comprising same, and method for operating said refrigerator
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Solution Overview
Problem
Current refrigerants for heat cycles, such as R410A, face challenges in high-temperature operations and have higher Global Warming Potential (GWP), necessitating a more efficient and environmentally friendly alternative with improved refrigerating capacity and stability.
Innovation Solution
A composition comprising a refrigerant mixture of HFO-1123 and HFO-1234yf, with a total content of 99.5 mass % or more, optimized within specific ratios to achieve low GWP, high critical temperature, and resistance to disproportionation reactions, even under abnormal operating conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If R410A is used as a refrigerant, then refrigerating capacity is improved, but Global Warming Potential increases and high-temperature operation stability deteriorates
Solution Approach 1:
The patent changes the chemical composition parameters by using HFO-1123 and HFO-1234yf with specific ratios (42.5-46.1 mass% HFO-1123 and 53.9-57.5 mass% HFO-1234yf) to achieve low GWP while maintaining refrigerating capacity. This parameter optimization resolves the contradiction between productivity and environmental harm.
Solution Approach 2:
The patent creates a composite refrigerant mixture combining HFO-1123 and HFO-1234yf in specific proportions. This composite approach leverages the complementary properties of both components to achieve low GWP and high refrigerating capacity simultaneously, resolving the contradiction between environmental friendliness and productivity.
2Productivity
If conventional refrigerants are used, then refrigerating capacity is maintained, but stability under high-temperature conditions deteriorates
Solution Approach 1:
The patent optimizes the compositional parameters of HFO-1123 and HFO-1234yf to achieve a critical temperature of 75.3°C or higher, which ensures stability under high-temperature conditions while maintaining refrigerating capacity. This parameter optimization resolves the contradiction between productivity and reliability.
3Object-affected harmful factors
If refrigerant composition is optimized for low GWP, then environmental friendliness is improved, but refrigerating capacity may deteriorate
Solution Approach 1:
The patent precisely optimizes the mass ratio parameters of HFO-1123 (42.5-46.1%) and HFO-1234yf (53.9-57.5%) to achieve the lowest possible GWP while maintaining refrigerating capacity at 97.5% or higher of R410A. This parameter optimization resolves the contradiction between environmental friendliness and productivity.
Solution Approach 2:
The patent develops a composite refrigerant system where HFO-1123 provides low GWP properties and HFO-1234yf contributes to refrigerating capacity. The synergistic combination resolves the contradiction between reducing environmental harm and maintaining productivity.
4Reliability
If refrigerant composition is adjusted for high critical temperature, then high-temperature stability is improved, but resistance to disproportionation reactions may deteriorate
Solution Approach 1:
The patent optimizes the compositional parameters to achieve a critical temperature of 75.3°C or higher while maintaining resistance to disproportionation reactions through the specific combination of HFO-1123 and HFO-1234yf. This parameter optimization resolves the contradiction between reliability and compositional stability.
Data Source
AI summary
An object is to provide a novel low-GWP mixed refrigerant. As a solution thereof, provided is a composition comprising a refrigerant, the refrigerant comprising HFO-1123 and HFO-1234yf, wherein the total content of HFO-1123 and HFO-1234yf is 99.5 mass % or more based on the entire refrigerant, and the content of HFO-1123 is 42.5 to 46.1 mass % and the content of HFO-1234yf is 53.9 to 57.5 mass % based on the sum of HFO-1123 and HFO-1234yf.