Compositions containing fluorine substituted olefins
First Claim
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1. A heat transfer composition comprising:
- (a) a first component comprising difluoromethane (R-32);
(b) a second component selected from group consisting of CF3I, 1,2,3,3,3-pentafluoropropene (HFO-1225), and combinations of these;
(c) and optionally at least one third component selected from the group consisting of fluorinated C2-C3 compounds.
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Abstract
Disclosed are heat transfer compositions, and methods of using and selecting heat transfer compositions, in which the composition comprises a first component comprising difluoromethane (R-32), and at least one second component selected from group consisting of CF3I, 1,2,3,3,3-pentafluoropropene (HFO 1225ye), and combinations of these, and optionally, but preferably, at least one third component selected from the group consisting of fluorinated C2-C3 compounds, including any combination of two or more fluorinated C2-C3 compounds.
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Citations
20 Claims
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1. A heat transfer composition comprising:
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(a) a first component comprising difluoromethane (R-32); (b) a second component selected from group consisting of CF3I, 1,2,3,3,3-pentafluoropropene (HFO-1225), and combinations of these; (c) and optionally at least one third component selected from the group consisting of fluorinated C2-C3 compounds. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of selecting a composition for use in an existing heat transfer system, the method comprising:
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a) analyzing the existing heat transfer system in a manner sufficient to permit approximation of the capacity of the fluid used in the existing heat transfer system; b) approximating the capacity of two or more heat transfer compositions, said two or more compositions comprising; (i) a first component comprising difluoromethane (R-32); (ii) a second component selected from group consisting of CF3I, 1,2,3,3,3-pentafluoropropene (HFO-1225), and combinations of these; (iii) and optionally at least one third component selected from the group consisting of fluorinated C2-C3 compounds; and c) selecting at least one of said two or more of heat transfer compositions for use in the existing heat transfer system.
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Specification