Composition containing refrigerant and application thereof

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Current refrigerants, such as R23, R404A, and R410A, have limitations in terms of global warming potential (GWP) and refrigeration capacity, necessitating the development of alternative refrigerants with lower GWP and higher coefficient of performance (COP) and refrigeration capacity.

Innovation Solution

A composition comprising perfluorocarbons (PFCs) like PFC-14, unsaturated compounds like HFO-1132a, and hydrofluorocarbons (HFCs) such as HFC-23, HFC-32, and HFC-125, which together form a refrigerant with a low GWP and enhanced refrigeration capacity and COP, suitable for use in refrigeration systems.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If conventional refrigerants like R23, R404A, and R410A are used, then refrigeration capacity and COP are maintained, but global warming potential (GWP) increases

Engineering Contradiction:
Improveglobal warming potentialVSAvoidrefrigeration capacity
Core Design Contradiction:
Object-affected harmful factorsVSProductivity

Solution Approach 1:

The patent applies composite materials by formulating a mixed refrigerant composition containing multiple fluorocarbon compounds (HFC-32, HFC-125, HFC-134a, HFC-143a) in specific proportions. This composite refrigerant blend achieves low GWP (≤7000) while maintaining high refrigeration capacity and COP, resolving the contradiction between environmental harm and productivity

Inventive Principle:
Principle #40Composite materials

2Object-affected harmful factors

If alternative refrigerants with lower GWP are developed, then environmental impact is reduced, but refrigeration capacity and COP may be compromised

Engineering Contradiction:
Improveenvironmental impactVSAvoidcoefficient of performance
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent applies parameter changes by precisely controlling the compositional ratios of multiple refrigerant components (HFC-32: 10-50 mass%, HFC-125: 20-60 mass%, HFC-134a: 5-30 mass%, HFC-143a: 5-30 mass%). This optimization of compositional parameters achieves both low GWP and high COP, simultaneously improving environmental impact and reliability

Inventive Principle:
Principle #35Parameter changes

3Object-affected harmful factors

If single-refrigerant alternatives like HFC-23 are used, then GWP is reduced, but refrigeration capacity decreases

Engineering Contradiction:
ImproveGWPVSAvoidrefrigeration capacity
Core Design Contradiction:
Object-affected harmful factorsVSProductivity

Solution Approach 1:

The patent applies merging by combining multiple refrigerant components (HFC-32, HFC-125, HFC-134a, HFC-143a) into a unified mixed refrigerant system. This combination leverages the complementary strengths of each component to achieve both low GWP and high refrigeration capacity, overcoming the limitations of single-refrigerant alternatives

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS11306234B2Composition containing refrigerant and application thereof
Publication Date: 2022.04.19 DAIKIN INDUSTRIES LTD

AI summary

The present invention provides a composition containing a refrigerant having characteristics equal to or higher than those of R23. Specifically, the present invention provides a composition containing a refrigerant, wherein the refrigerant contains (a) at least one perfluorocarbon (PFC) selected from the group consisting of PFC-14, PFC-116, PFC-c216, PFC-218, PFC-c318, and PFC-31-10, and (b) an unsaturated compound.