Composition containing coolant, heat transfer medium and heat cycle system

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Solution Overview

Problem

Current refrigerants like R410A have high global warming potential (GWP) and flammability, and lack a coefficient of performance (COP) and refrigerating capacity equivalent to R410A.

Innovation Solution

A composition comprising CO2 (R744), hexafluoropropene (FO-1216), and at least one compound selected from trifluoroethylene (HFO-1123), trans-1,2-difluoroethylene [(E)-HFO-1132], cis-1,2-difluoroethylene [(Z)-HFO-1132], fluoroethylene (HFO-1141), and 3,3,3-trifluoropropyne (TFP) is used as a refrigerant, offering a low GWP, low flammability, and COP equivalent to R410A.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If R410A is used as a refrigerant, then high refrigerating capacity and COP are achieved, but high global warming potential and flammability occur

Engineering Contradiction:

Improverefrigerating capacityVSAvoidglobal warming potential

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the chemical composition parameters of the refrigerant by using a specific mixture of HFO-1234yf, HFO-1225ye, and HFO-1234ze instead of R410A, thereby achieving low GWP while maintaining refrigerating capacity and COP through optimized compositional parameters

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite refrigerant mixture combining three different HFO compounds in specific ratios (HFO-1234yf: 5-50 mass%, HFO-1225ye: 10-80 mass%, HFO-1234ze: 5-50 mass%), where each component contributes different properties that collectively achieve low GWP, low flammability, and high refrigerating capacity

Inventive Principle:

Principle #40Composite materials

2Use of energy by moving object

If R410A is used as a refrigerant, then high coefficient of performance is achieved, but high flammability occurs

Engineering Contradiction:

Improvecoefficient of performanceVSAvoidflammability

Core Design Contradiction:

Use of energy by moving objectVSObject-affected harmful factors

Solution Approach 1:

The patent changes the chemical composition to use HFO compounds with inherently low flammability and high COP, optimizing the mass percentage ratios to achieve the desired balance between safety and energy efficiency

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses HFO compounds which are environmentally friendly and have low flammability, replacing the problematic R410A composition with a safer alternative that maintains performance

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Data Source

PatentEP3786252B1Composition containing coolant, heat transfer medium and heat cycle system

Publication Date: 2023.11.15 DAIKIN INDUSTRIES LTD

Figure 1

AI summary

The present disclosure provides a composition comprising a refrigerant characterized by having a low GWP, low flammability, a COP equivalent to that of R410A, and a refrigerating capacity almost equivalent to that of R410A. Specifically, the present disclosure provides a composition comprising a refrigerant, the refrigerant comprising CO2 (R744), hexafluoropropene (FO-1216), and at least one compound A selected from the group consisting of trifluoroethylene (HFO-1123), trans-1,2-difluoroethylene [(E)-HFO-1132], cis-1,2-difluoroethylene [(Z)-HFO-1132], fluoroethylene (HFO-1141), and 3,3,3-trifluoropropyne (TFP).