Composition containing refrigerant and application thereof

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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 compositions with improved characteristics.

Innovation Solution

A refrigerant composition comprising perfluorocarbon (PFC-14), an unsaturated compound (HFO-1132a), and hydrofluorocarbons (HFC-23, HFC-32, HFC-125), with PFC-14 present in 1-15 mass%, offering a low GWP and enhanced refrigeration capacity comparable to or exceeding that of R23, R404A, and R410A.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

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

Engineering Contradiction:

Improveglobal warming potentialVSAvoidrefrigeration capacity

Core Design Contradiction:

Object-affected harmful factorsVSProductivity

Solution Approach 1:

The patent applies composite refrigerant formulation by combining multiple components (HFO-1132a as the base unsaturated compound, PFC-14 for low GWP, and HFCs for performance enhancement) to create a mixed refrigerant composition that achieves both low environmental impact and high refrigeration capacity, resolving the contradiction between reducing GWP and maintaining productivity

Inventive Principle:

Principle #40Composite materials

2Productivity

If HFC-based refrigerants are used, then refrigeration capacity is improved, but environmental harm increases

Engineering Contradiction:

Improverefrigeration capacityVSAvoidenvironmental harm

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The patent changes the chemical composition parameters by introducing HFO-1132a (an unsaturated compound with low GWP) as the primary component and carefully controlling the ratios of PFC-14 and HFC additives, thereby achieving high refrigeration capacity while minimizing environmental harm through optimized compositional parameters

Inventive Principle:

Principle #35Parameter changes

3Object-affected harmful factors

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

Engineering Contradiction:

Improveenvironmental impactVSAvoidrefrigeration capacity

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent uses PFC-14 and specific HFC compounds as intermediary substances that bridge the gap between low-GWP HFO-1132a and high-performance refrigeration requirements, where these intermediary components enhance the refrigeration capacity and thermodynamic properties while maintaining the overall low GWP characteristic of the HFO-based formulation

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentEP3783081B1Composition containing refrigerant and application thereof

Publication Date: 2024.06.12 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.