Binary refrigerating fluid
Binary compositions of 2,3,3,3-tetrafluoropropene and difluoromethane, and especially to the uses thereof as a heat transfer fluid in compression systems with exchangers operating in counterflow mode or in split flow mode with counterflow tendency. Also, a method of heat transfer in which a binary composition of 2,3,3,3-tetrafluoropropene and difluoromethane is used as refrigerant in compression systems with exchangers in countercurrent mode or in crossed-current mode with countercurrent tendency.
1. A heat pump comprising a refrigerant comprising from 70 to 90 wt. % of 2,3,3,3-tetrafluoropropene and from 10 to 30 wt. % of difluoromethane, wherein the heat pump comprises exchangers operating in countercurrent flow mode or in crossed-current flow mode with countercurrent tendency.
2. The heat pump as claimed in claim 1 , wherein the heat pump is reversible.
3. The heat pump as claimed in claim 1 , wherein the refrigerant comprises from 78 to 84 wt. % of 2,3,3,3-tetrafluoropropene and from 16 to 22 wt. % of difluoromethane.
4. The heat pump as claimed in claim 1 , wherein the refrigerant comprises from 81 to 83 wt. % of 2,3,3,3-tetrafluoropropene and from 17 to 19 wt. % of difluoromethane.
5. The heat pump as claimed in claim 1 , wherein the refrigerant consists of from 70 to 90 wt. % of 2,3,3,3-tetrafluoropropene, from 10 to 30 wt. % of difluoromethane, optionally, a stabilizer, and optionally, a lubricant.
6. The heat pump as claimed in claim 1 , wherein the refrigerant consists of from 78 to 84 wt. % of 2,3,3,3-tetrafluoropropene, from 16 to 22 wt. % of difluoromethane, optionally, a stabilizer, and optionally, a lubricant.
7. The heat pump as claimed in claim 1 , wherein the refrigerant consists of from 81 to 83 wt. % of 2,3,3,3-tetrafluoropropene, from 17 to 19 wt. % of difluoromethane, optionally, a stabilizer, and optionally, a lubricant.
8. The heat pump as claimed in claim 1 , wherein the refrigerant further comprises a stabilizer.
9. The heat pump as claimed in claim 1 , wherein said refrigerant further comprises a lubricant.
10. The heat pump as claimed in claim 9 , wherein the lubricant is mineral oil.
11. The heat pump as claimed in claim 9 , wherein the lubricant is alkylbenzene.
12. The heat pump as claimed in claim 9 , wherein the lubricant is polyalkylene glycol.
13. The heat pump as claimed in claim 9 , wherein the lubricant is polyol ester.
14. The heat pump as claimed in claim 9 , wherein the lubricant is polyvinyl ether.
15. An automobile comprising the heat pump of claim 2 .
16. A heat pump comprising a refrigerant consisting essentially of from 78 to 84 wt. % of 2,3,3,3-tetrafluoropropene and from 16 to 22 wt. % of difluoromethane,
wherein the heat pump comprises a compression system with exchangers operating in crossed-current flow mode with countercurrent tendency.
17. The heat pump as claimed in claim 16 , wherein the heat pump is reversible.
18. The heat pump according to claim 16 , wherein the refrigerant consists essentially of from 81 to 83 wt. % of 2,3,3,3-tetrafluoropropene and from 17 to 19 wt. % of difluoromethane.
19. The heat pump as claimed in claim 16 , wherein the heat pump comprises a compression system with exchangers operating in countercurrent flow mode.
20. The heat pump as claimed in claim 16 , wherein the heat pump comprises a compression system with exchangers operating in crossed-current flow mode with countercurrent tendency.
21. An automobile comprising the heat pump of claim 17 .