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Tetrafluoropropylene-containing mixture refrigerant

A technology of mixing refrigerant and tetrafluoropropylene, applied in the field of refrigeration and low temperature, can solve the problem of poor mutual solubility between refrigerant and lubricating oil, and achieve the effects of good mutual solubility, high energy efficiency and good environmental performance

Active Publication Date: 2015-04-22
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented new type of refrigzer for use at temperatures below 30C uses specific types of chemicals called perflourooctanes (PFOS) or trichlorofluorovinolone(TFF). These compounds improve its properties such as reducing volatilization during storage when stored under pressure. They have excellent compatibility with common oils like mineral oil that make up most commonly available coolants. Additionally they provide better heat transfer than traditional freons without adding extra weight compared to some older systems. Overall these technical results lead to an environmentally friendly alternative to current chilled water based refrigrators while maintaining their effectiveness over time.

Problems solved by technology

The technical problem addressed by this patented research relates to developing environmental friendliness and efficiency improvements over traditional chemical coolers that use CFC/HCFC compounds like dichlorodifroanone (DDM).

Method used

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  • Tetrafluoropropylene-containing mixture refrigerant

Examples

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Embodiment 1

[0033] Example 1: R1234ze(E) with a molar concentration of 10% and propane with a molar concentration of 90% were physically mixed at room temperature to obtain a mixed refrigerant containing tetrafluoropropene.

Embodiment 2

[0034] Example 2: R1234yf with a molar concentration of 80% and propylene with a molar concentration of 20% were physically mixed at room temperature to obtain a mixed refrigerant containing tetrafluoropropylene.

Embodiment 3

[0035] Example 3: R1234ze(E) with a molar concentration of 65% and isobutane with a molar concentration of 35% were physically mixed at room temperature to obtain a mixed refrigerant containing tetrafluoropropene.

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Abstract

The invention provides a tetrafluoropropylene-containing mixture refrigerant. According to the invention, because hydrocarbon substances such as propane, propylene, iso-butane, butane, 1-butylene and iso-butylene are added in tetrafluoropropylene, the intersolubility of the refrigerant and lubricating oil is improved; besides, hydrofluorocarbon type substances containing multiple fluorine atoms, such as trifluoro-iodomethane, difluoromethane, 1,1-difluoroethane, 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, 1,1,1,2,3,3,3-heptafluoropropane, 1,1,1,3,3,3-hexafluoropropane, 1,1,1,2,3,3-hexafluoropropane and 1,1,1,3,3-perfluoropropane are added in the mixture, so that the flammability of the refrigerant can be reduced.

Description

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Claims

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Application Information

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Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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