Azeotropic HCFO Blend for Stable Low-GWP Heat Transfer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current azeotropic compositions and azeotropic-like compositions for chlorofluorocarbons are difficult to theoretically determine and require experimental confirmation, and existing substitutes for chlorofluorocarbons have significant global warming potential and environmental impact.
Innovation Solution
A specific azeotropic-like composition comprising 2-chloro-1,3,3,3-tetrafluoropropene (HCFO-1224xe) and 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd) is developed, which maintains a consistent composition ratio in both liquid and gas phases, making it suitable for use as a washing detergent, solvent, foaming agent, coolant, and heating medium, while being non-flammable and environmentally friendly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If hydrofluorocarbons (HFCs) are used as substitutes for chlorofluorocarbons, then ozone layer protection is improved, but global warming potential increases due to long atmospheric life
Solution Approach 1:
The invention changes the chemical composition parameters by using hydrofluoroolefins (HFOs) instead of conventional HFCs. HFOs have different molecular structures with double bonds that enable faster atmospheric degradation, thereby reducing both ozone depletion potential and global warming potential through parameter modification of the refrigerant composition
Solution Approach 2:
The invention creates composite refrigerant mixtures combining HFO-1224xe and HFO-1233zd in specific ratios. This composite approach allows optimization of thermodynamic properties while maintaining low environmental impact, as the synergistic combination achieves desired cooling performance with reduced atmospheric persistence
2Power
If chlorofluorocarbons are used in mixed coolant formulations, then cooling performance is improved, but composition stability deteriorates due to selective evaporation
Solution Approach 1:
The invention selects specific components HFO-1224xe and HFO-1233zd with carefully matched volatility parameters. By adjusting the composition ratio and selecting components with similar evaporation characteristics, the mixture achieves azeotropic or near-azeotropic behavior, preventing composition drift during evaporation while maintaining high cooling performance
3Loss of time
If azeotropic compositions are theoretically determined, then development time is reduced, but accuracy deteriorates due to lack of theoretical models
Solution Approach 1:
The invention performs preliminary experimental work to establish the specific composition ratio of HFO-1224xe and HFO-1233zd that achieves azeotropic behavior. By conducting advance experiments to determine the optimal mixture ratio, the invention eliminates the need for time-consuming theoretical modeling while ensuring high composition accuracy and stability in practical applications
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The azeotropic-like composition effectively maintains a stable composition ratio during vaporization, providing a non-flammable and environmentally benign solution for various applications, reducing global warming potential and improving efficiency in uses such as washing and heat transfer.
Implementation Method 1
it is preferable that the mixture is an azeotropic or azeotropic-like composition, which is volatilized with substantially the same composition ratio as that of a liquid phase
Data Source
AI summary
An azeotropic-like composition containing 2-chloro-1,3,3,3-tetrafluoropropene and 1-chloro-3,3,3-trifluoropropene is provided. The azeotropic-like composition according to the present invention is non-flammable, has little influence on the environment, and has substantially the same composition ratio in the liquid phase and the gas phase. By use of an azeotropic-like composition according to the present invention, a washing detergent, a solvent, a silicone solvent, a foaming agent, a coolant, a heating medium for a heat pump, and a high temperature working fluid that are non-flammable, have little influence on the environment, and have substantially the same composition ratio in a liquid phase and a gas phase thereof may be provided.