US2016046850A1PendingUtilityA1

Low gwp heat transfer compositions containing difluoromethane, a fluorinated ethane and 1,3,3,3-tetrafluoropropene

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Assignee: HONEYWELL INT INCPriority: Jul 13, 2011Filed: Oct 23, 2015Published: Feb 18, 2016
Est. expiryJul 13, 2031(~5 yrs left)· nominal 20-yr term from priority
Inventors:Samuel F. Yana MottaMark W. SpatzChristopher J. Seeton
C09K 5/045C09K 2205/122C09K 2205/126C09K 2205/22
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PatentIndex Score
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Claims

Abstract

Heat transfer compositions, methods and use wherein the composition comprising: (a) from about 5 to about 20% by weight of HFC-32; (b) from about 70% to about 90% by weight of HFI-1234ze; and (c) from about 5% to less than about 20% by weight of HFC-152a and/or HFC-134a.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A heat transfer composition comprising: (a) HFO-1234ze; (b) HFC-32; and (c) HFC-152a, the amount of HFC-152a present in the composition being less than about 20% by weight of the composition and not less than about 5% of the composition. 
     
     
         2 . The heat transfer composition of  claim 1  wherein said composition has a GWP of not greater than 150. 
     
     
         3 . The heat transfer composition of  claim 1  wherein said composition has a GWP of not greater than 100. 
     
     
         4 . The heat transfer composition of  claim 1  wherein said composition has a hazard value of less than about 7. 
     
     
         5 . The heat transfer composition of  claim 1  wherein said composition has a hazard value of less than about 4. 
     
     
         6 . The heat transfer composition of  claim 1  wherein said composition has a hazard value of not greater than about 2. 
     
     
         7 . The heat transfer composition of  claim 1  wherein said composition has a burning velocity of less than 10. 
     
     
         8 . The heat transfer composition of  claim 1  wherein said composition has a capacity relative to HFC-134a under MAC conditions of from about 90% to about 105%. 
     
     
         9 . The heat transfer composition of  claim 1  wherein said composition has a capacity relative to HFC-134a under MAC conditions of from about 95% to about 101%. 
     
     
         10 . The heat transfer composition of  claim 1  wherein said composition has a COP relative to HFC134a under MAC conditions of from about 98% to about 102%. 
     
     
         11 . The heat transfer composition of  claim 1  wherein said composition has a COP relative to HFC134a under MAC conditions of from about 100%. 
     
     
         12 . The heat transfer composition of  claim 1  wherein said composition comprises from about 70% to about 90% by weight of HFO-1234ze. 
     
     
         13 . The heat transfer composition of  claim 12  wherein said HFO-1234ze consists essentially of trans-HFO1234ze. 
     
     
         14 . The heat transfer composition of  claim 1  wherein said composition comprises from about 5% to about 20% by weight of HFC-32. 
     
     
         15 . The heat transfer composition of  claim 1  wherein said composition further comprises HFC-134a in an amount of up to about 6% by weight. 
     
     
         16 . The heat transfer composition of  claim 1  wherein said HFC-152a is present in the composition in an amount of not greater than about 15% by weight. 
     
     
         17 . The heat transfer composition of  claim 1  wherein HFO-1234ze is provided in an amount between about 75% and about 79% by weight, HFC-152a is provided in an amount of about 15% by weight and HFC-32 is provided in an amount between about 6% and about 10% by weight. 
     
     
         18 . An air conditioning system comprising a heat transfer composition according to  claim 1 . 
     
     
         19 . A mobile air conditioning system comprising a heat transfer composition according to  claim 1 . 
     
     
         20 . An air conditioning system in a passenger car or for the passenger compartment of a truck comprising a heat transfer composition according to  claim 1 . 
     
     
         21 . A heat transfer composition comprising: (a) HFO-1234ze; (b) HFC-32; and (c) HFC-134a, the amount of HFC-134a present in the composition being less than about 6% by weight of the composition and not less than about 3% of the composition. 
     
     
         22 . The heat transfer composition of  claim 21  wherein said composition has a GWP of not greater than 150. 
     
     
         23 . The heat transfer composition of  claim 21  wherein said composition has a GWP of not greater than 100. 
     
     
         24 . The heat transfer composition of  claim 21  wherein said composition has a hazard value of less than about 7. 
     
     
         25 . The heat transfer composition of  claim 21  wherein said composition has a hazard value of less than about 4. 
     
     
         26 . The heat transfer composition of  claim 21  wherein said composition has a hazard value of not greater than about 2. 
     
     
         27 . The heat transfer composition of  claim 21  wherein said composition has a burning velocity of less than 10. 
     
     
         28 . The heat transfer composition of  claim 21  wherein said composition has a capacity relative to HFC-134a under MAC conditions of from about 90% to about 105%. 
     
     
         29 . The heat transfer composition of  claim 21  wherein said composition has a capacity relative to HFC-134a under MAC conditions of from about 95% to about 101%. 
     
     
         30 . The heat transfer composition of  claim 21  wherein said composition has a COP relative to HFC134a under MAC conditions of from about 98% to about 102%. 
     
     
         31 . The heat transfer composition of  claim 21  wherein said composition has a COP relative to HFC134a under MAC conditions of from about 100%. 
     
     
         32 . The heat transfer composition of  claim 21  wherein said composition comprises from about 83% to about 88% by weight of HFO-1234ze. 
     
     
         33 . The heat transfer composition of  claim 32  wherein said HFO-1234ze consists essentially of trans-HFO1234ze. 
     
     
         34 . The heat transfer composition of  claim 21  wherein said composition comprises from about 8% to about 12% by weight of HFC-32. 
     
     
         35 . The heat transfer composition of  claim 21  wherein HFO-1234ze is provided in an amount between about 85% and about 86% by weight, HFC-134a is provided in an amount of about 4.5% by weight and HFC-32 is provided in an amount between about 9.5% and about 10.5% by weight. 
     
     
         36 . An air conditioning system comprising a heat transfer composition according to  claim 21 . 
     
     
         37 . A mobile air conditioning system comprising a heat transfer composition according to  claims 21 . 
     
     
         38 . An air conditioning system in a passenger car or for the passenger compartment of a truck comprising a heat transfer composition according to  claim 21 .

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