Heat transfer methods using heat transfer compositions containing trans-1,3,3,3-tetrafluoropropene
CAFCFirst Claim
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1. A method of transferring heat to or from a body in a vapor compression system comprising:
- (a) providing in at least a portion of said system a heat transfer composition comprising at least about 5% by weight of trans-1,3,3,3-tetrafluoropropene and lubricant comprising polyol ester; and
(b) causing heat to be transferred to or from trans-1,3,3,3-tetrafluoropropene and into or from said body by heat transfer contact between said trans-1,3,3,3-tetrafluoropropene and the body.
1 Assignment
1 Petition
Accused Products
Abstract
Disclosed are methods of transferring heat to or from a fluid or body comprising causing heat to be transferred to or from a composition comprising at least trans-1,3,3,3-tetrafluorpropene.
83 Citations
15 Claims
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1. A method of transferring heat to or from a body in a vapor compression system comprising:
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(a) providing in at least a portion of said system a heat transfer composition comprising at least about 5% by weight of trans-1,3,3,3-tetrafluoropropene and lubricant comprising polyol ester; and (b) causing heat to be transferred to or from trans-1,3,3,3-tetrafluoropropene and into or from said body by heat transfer contact between said trans-1,3,3,3-tetrafluoropropene and the body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of cooling a body in a heat transfer system by transferring heat from the body to at least a portion of a heat transfer fluid contained in the system, the method comprising;
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(a) providing in the system a heat transfer fluid comprising at least about 5% by weight of trans-1,3,3,3-tetrafluoropropene and from about 30by weight to about 50% by weight of polyol ester lubricant, wherein in at least a portion of said system said trans-1,3,3,3-tetrafluoropropene is in a gas phase at a first pressure and at a first temperature; (b) removing heat from said trans-1,3,3,3-tetrafluoropropene provided at said first temperature by condensing at least a portion of said trans-1,3,3,3-tetrafluoropropene to produce at least a portion of said heat transfer fluid in a liquid phase at about said first pressure; (c) reducing the pressure of at least a portion of said liquid heat transfer fluid from step (b) to produce a heat transfer fluid at a second temperature substantially below said first temperature and a second pressure substantially below said first pressure; (d) cooling the body by bringing said body into heat transfer contact with said heat transfer fluid at about said second temperature produced in step (c); and (e) providing at least a portion of said fluid at said first pressure in said step (a) by compressing said heat transfer fluid provided in step (d) from about said second pressure to about said first pressure. - View Dependent Claims (10, 11, 15)
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12. A method of cooling a body by transferring heat from the body to a heat transfer fluid, the method comprising;
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(a) providing a heat transfer fluid comprising at least about 5% by weight of trans-1,3,3,3-tetrafluoropropene and polyol ester lubricant; (b) compressing at least a portion of said heat transfer fluid to produce a heat transfer fluid comprising at least a portion of said trans-1,3,3,3-tetrafluoropropene at a first pressure and at a first temperature; (c) removing heat from said fluid provided at said first temperature by step (b) by condensing at least a portion of said heat transfer fluid to produce at least a portion of said heat transfer fluid in a liquid phase at about said first pressure; (d) reducing the pressure of at least a portion of said liquid heat transfer fluid from step (c) to produce a heat transfer fluid at a second temperature substantially below said first temperature and a second pressure substantially below said first pressure; (e) cooling the body by evaporating at least a portion of said heat transfer fluid produced at said second temperature in step (d); and (f) providing at least a portion of said fluid at said first pressure in said step (a) by compressing said evaporated heat transfer fluid provided in step (e) from about said second pressure to about said first pressure. - View Dependent Claims (13, 14)
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Specification