Ternary heat-transfer fluids comprising difluoromethane, pentafluoroethane and tetrafluoropropene
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C09K-005/04
F25B-045/00
출원번호
US-0150889
(2016-05-10)
등록번호
US-9488398
(2016-11-08)
우선권정보
FR-10 53671 (2010-05-11)
발명자
/ 주소
Rached, Wissam
출원인 / 주소
ARKEMA FRANCE
대리인 / 주소
Buchanan Ingersoll & Rooney P.C.
인용정보
피인용 횟수 :
2인용 특허 :
18
초록▼
A ternary composition including: from 5 to 50% of difluoromethane; from 2 to 20% of pentafluoroethane; and from 30 to 90% of tetrafluoropropene. The tetrafluoropropene may be 1,3,3,3-tetrafluoropropene or 2,3,3,3-tetrafluoropropene. This composition can be used as a heat-transfer fluid in vapor comp
A ternary composition including: from 5 to 50% of difluoromethane; from 2 to 20% of pentafluoroethane; and from 30 to 90% of tetrafluoropropene. The tetrafluoropropene may be 1,3,3,3-tetrafluoropropene or 2,3,3,3-tetrafluoropropene. This composition can be used as a heat-transfer fluid in vapor compression circuit. A process for heating or cooling a fluid or a body using a vapor compression circuit containing a heat transfer fluid, said process successively including evaporation of the heat transfer fluid, compression of the heat transfer fluid, condensation of the heat fluid and depressurization of the heat transfer fluid, in which the heat transfer fluid is a composition as described.
대표청구항▼
1. A method comprising replacing an initial heat transfer fluid in a heat transfer installation comprising a vapor compression circuit containing the initial heat transfer fluid, said method comprising a step of replacing the initial heat transfer fluid in the vapor compression circuit with a final
1. A method comprising replacing an initial heat transfer fluid in a heat transfer installation comprising a vapor compression circuit containing the initial heat transfer fluid, said method comprising a step of replacing the initial heat transfer fluid in the vapor compression circuit with a final transfer fluid, wherein the initial heat transfer fluid is R404a, R407c or HFC-134a, andwherein the final transfer fluid comprises, in mass percent: from 5% to 50% of difluoromethane;from 2% to 20% of pentafluoroethane; and from 30% to 90% of tetrafluoropropene, wherein the tetrafluoropropene is 1,3,3,3-tetrafluoropropene or 2,3,3,3-tetrafluoropropene. 2. The method as claimed in claim 1, in which the tetrafluoropropene is 1,3,3,3-tetrafluoropropene. 3. The method as claimed in claim 1, in which the tetrafluoropropene is 2,3,3,3-tetrafluoropropene. 4. The method as claimed in claim 1, in which the initial heat transfer fluid is R404a. 5. The method as claimed in claim 1, in which the initial heat transfer fluid is R407c. 6. The method as claimed in claim 1, in which the initial heat transfer fluid is HFC-134a. 7. The method as claimed in claim 1, wherein the initial heat transfer fluid is R404a, and wherein the final transfer fluid comprises, in mass percent: from 15% to 35% of difluoromethane;from 5% to 20% of pentafluoroethane; andfrom 45% to 80% of 2,3,3,3-tetrafluoropropene. 8. The method as claimed in claim 1, wherein the initial heat transfer fluid is R404a, and wherein the final transfer fluid comprises, in mass percent: from 18% to 25% of difluoromethane;from 8% to 20% of pentafluoroethane; andfrom 55% to 74% of 2,3,3,3-tetrafluoropropene. 9. The method as claimed in claim 1, wherein the initial heat transfer fluid is R404a, and wherein the final transfer fluid comprises, in mass percent: from 15% to 50% of difluoromethane;from 5% to 20% of pentafluoroethane; andfrom 30% to 80% of 1,3,3,3-tetrafluoropropene. 10. The method as claimed in claim 1, wherein the initial heat transfer fluid is R404a, and wherein the final transfer fluid comprises, in mass percent: from 30% to 40% of difluoromethane;from 8% to 20% of pentafluoroethane; and40% to 62% of 1,3,3,3-tetrafluoropropene. 11. The method as claimed in claim 1, wherein the initial heat transfer fluid is R134a, and wherein the final transfer fluid comprises, in mass percent: from 5% to 30% of difluoromethane;from 5% to 20% of pentafluoroethane; andfrom 50% to 90% of 1,3,3,3-tetrafluoropropene. 12. The method as claimed in claim 1, wherein the initial heat transfer fluid is R134a, and wherein the final transfer fluid comprises, in mass percent: from 5% to 20% of difluoromethane;from 5% to 20% of pentafluoroethane; andfrom 60% to 90% of 1,3,3,3-tetrafluoropropene. 13. The method as claimed in claim 1, wherein the initial heat transfer fluid is R404a or R407c, and wherein the final transfer fluid comprises, in mass percent: from 20% to 40% of difluoromethane;from 5% to 20% of pentafluoroethane; andfrom 40% to 75% of 1,3,3,3-tetrafluoropropene. 14. The method as claimed in claim 1, wherein the initial heat transfer fluid is R404a or R407c, and wherein the final transfer fluid comprises, in mass percent: from 25% to 40% of difluoromethane;from 5% to 20% of pentafluoroethane; andfrom 40% to 70% of 1,3,3,3-tetrafluoropropene. 15. The method as claimed in claim 1, wherein the initial heat transfer fluid is R404a or R407c, and wherein the final transfer fluid comprises, in mass percent: from 15% to 35% of difluoromethane;from 5% to 20% of pentafluoroethane; andfrom 45% to 80% of 2,3,3,3-tetrafluoropropene. 16. The method as claimed in claim 1, wherein the initial heat transfer fluid is R404a or R407c, and wherein the final transfer fluid comprises, in mass percent: from 18% to 25% of difluoromethane;from 8% to 20% of pentafluoroethane; andfrom 55% to 74% of 2,3,3,3-tetrafluoropropene. 17. The method as claimed in claim 1, wherein the final transfer fluid further comprising one or more additives chosen from the group consisting of lubricants, stabilizers, surfactants, tracer agents, fluorescers, odorants and solubilizers, and mixtures thereof. 18. The method as claimed in claim 1, wherein the final transfer fluid consists of, in mass percent: from 5% to 50% of difluoromethane;from 2% to 20% of pentafluoroethane; andfrom 30% to 90% of tetrafluoropropene, wherein the tetrafluoropropene is 1,3,3,3-tetrafluoropropene or 2,3,3,3-tetrafluoropropene,and, optionally, one or more additives chosen from the group consisting of lubricants, stabilizers, surfactants, tracer agents, fluorescers, odorants and solubilizers, and mixtures thereof.
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