Low GWP refrigerant blends
AssigneeRPL Holdings Limited
InventorsJohn Edward Poole, Richard Llewellyn Powell
Life of this patent
Estimating the term…
Abstract
Non-ozone depleting and non-flammable refrigerant compositions with GWPs less than 1050 which may replace HFC404A, HFC507 and HFC410A in refrigeration and air-conditioning systems.
Claims11
A nonflammable, zeotropic refrigerant composition, consisting essentially of one of the following compositions wherein percentages are by mass:
- (a)
- R125
- 9.5%
- carbon dioxide
- 9%
- R1234ze(E)
- 58%
- R227ea
- 7%
- R32
- 9.5%
- R134a
- 7%
- wherein the percentages are by mass ;
- (b)
- R125
- 11%
- carbon dioxide
- 11%
- R1234ze(E)
- 57%
- R227ea
- 7%
- R32
- 11%
- R134a
- 3%
- wherein the percentages are by mass ;
- (c)
- R125
- 18%
- carbon dioxide
- 11%
- R1234ze(E)
- 44%
- R227ea
- 6%
- R32
- 17%
- R134a
- 4%
- wherein the percentages are by mass ;
- (d)
- R125
- 11%
- carbon dioxide
- 11%
- R1234ze(E)
- 55%
- R227ea
- 7%
- R32
- 11%
- R134a
- 5%
- wherein the percentages are by mass ;
- (e)
- R125
- 13%
- carbon dioxide
- 11%
- R1234ze(E)
- 53%
- R227ea
- 7%
- R32
- 13%
- R134a
- 3%
- wherein the percentages are by mass ;
- (f)
- R125
- 13%
- carbon dioxide
- 11%
- R1234ze(E)
- 55%
- R227ea
- 7%
- R32
- 13%
- R134a
- 1%
- wherein the percentages are by mass ;
- (g)
- R125
- 14%
- carbon dioxide
- 11%
- R1234ze(E)
- 51%
- R227ea
- 7%
- R32
- 14%
- R134a
- 3%
- wherein the percentages are by mass ;
- (i)
- R125
- 10.5%
- carbon dioxide
- 11%
- R1234ze(E)
- 57%
- R227ea
- 7%
- R32
- 10.5%
- R134a
- 4%
- wherein the percentages are by mass ;
- (j)
- R125
- 10.5%
- carbon dioxide
- 11%
- R1234ze(E)
- 58%
- R227ea
- 7%
- R32
- 10.5%
- R134a
- 3%
- wherein the percentages are by mass ;
- (k)
- R125
- 11.5%
- carbon dioxide
- 10%
- R1234ze(E)
- 57%
- R227ea
- 7%
- R32
- 11.5%
- R134a
- 3%
- wherein the percentages are by mass ;
- (l)
- R125
- 11.5%
- carbon dioxide
- 10%
- R1234ze(E)
- 56%
- R227ea
- 8%
- R32
- 11.5%
- R134a
- 3%
- wherein the percentages are by mass ;
- and
- R125
- 14%
- carbon dioxide
- 11%
- R1234ze(E)
- 55%
- R227ea
- 7%
- R32
- 13%
- R134(a)
- 0%.
A nonflammable, zeotropic refrigerant corn position composition, consisting essentially of one of the following compositions wherein percentages are by mass:
- (a)
- R125
- 19%
- carbon dioxide
- 10%
- R1234ze(E)
- 44%
- R227ea
- 3%
- R32
- 17%
- R134a
- 7%;
- wherein the percentages are by mass ;
- (b)
- R125
- 18%
- carbon dioxide
- 11%
- R1234ze(E)
- 44%
- R227ea
- 7%
- R32
- 17%
- R134a
- 3%
- wherein the percentages are by mass ;
- and
- (c)
- R125
- 18%
- carbon dioxide
- 11%
- R1234ze(E)
- 44%
- R227ea
- 6%
- R32
- 17%
- R134a
- 4%
- wherein the percentages are by mass .
A refrigerant composition, consisting essentially of one of the following compositions wherein percentages are by mass:
- R125
- 18.7%
- carbon dioxide
- 10.3%
- R1234ze(E)
- 43.3%
- R227ea
- 3%
- R32
- 17.2%
- R134a
- 7.4%;
- R125
- 18%
- carbon dioxide
- 10.9%
- R1234ze(E)
- 43.8%
- R227ea
- 5.8%
- R32
- 17.4%
- R134a
- 4.2%;
- R125
- 19%
- carbon dioxide
- 10%
- R1234ze(E)
- 44%
- R227ea
- 3%
- R32
- 17%
- R134a
- 7%;
- R125
- 18%
- carbon dioxide
- 11%
- R1234ze(E)
- 44%
- R227ea
- 6%
- R32
- 17%
- R134a
- 7%;
- R125
- 17%
- carbon dioxide
- 11%
- R1234ze(E)
- 22%
- R1234yf
- 22%
- R227ea
- 3%
- R32
- 17%
- R134a
- 10%;
- R125
- 17%
- carbon dioxide
- 11%
- R1234ze(E)
- 0%
- R1234yf
- 41%
- R227ea
- 0%
- R32
- 17%
- R134a
- 14%;
- R125
- 11.4%
- carbon dioxide
- 10.4%
- R1234ze(E)
- 56.1%
- R227ea
- 7.4%
- R32
- 11.4%
- R134a
- 3.3%;
- R125
- 11%
- carbon dioxide
- 11%
- R1234ze(E)
- 57%
- R227ea
- 7%
- R32
- 11%
- R134a
- 3%;
- R125
- 13%
- carbon dioxide
- 11%
- R1234ze(E)
- 53%
- R227ea
- 7%
- R32
- 13%
- R134a
- 3%;
- R125
- 12%
- carbon dioxide
- 9%
- R1234ze(E)
- 28%
- R1234yf
- 30%
- R227ea
- 5%
- R32
- 11%
- R134a
- 5%;
- R125
- 14%
- carbon dioxide
- 11%
- R1234ze(E)
- 51%
- R227ea
- 7%
- R32
- 14%
- R134a
- 3%;
- and
- R125
- 14%
- carbon dioxide
- 11%
- R1234ze(E)
- 0%
- R1234yf
- 48%
- R227ea
- 8%
- R32
- 14%
- R134a
- 5%.
A refrigerant composition, consisting essentially of one of the following compositions:
- carbon dioxide
- 9-11%
- an HFO selected from the group consisting of
- 40-60%
- R1234yf and R1234ze(E) and mixtures thereof
- R32
- 10-20%
- R125
- 10-20%
- R227ea
- 0-8%
- R134a
- 3-14%
- wherein the percentages are by mass and are selected from the ranges quoted to total 100%.
A refrigerant composition having a GWP not exceeding 1050, consisting essentially of:
- carbon dioxide
- 1-30%
- R1234ze(E)
- 30-70%
- R32
- 1-30%
- R125
- 1-30%
- R227ea
- 1-15%
- R134a
- 1-30%
- wherein the percentages are by mass and are selected from the ranges quoted to total 10%.
Dependencies are inferred from the claim text.