Heat transfer compositions, methods and systems

Patent metadata

Field	Value
Publication number	US-10781152-B2
Application number	US-201715711431-A
Country	US
Kind code	B2
Filing date	Sep 21, 2017
Priority date	Oct 25, 2002
Publication date	Sep 22, 2020
Grant date	Sep 22, 2020

Abstract

Various compositions, including particularly aerosol compositions, containing fluorinated olefins, including particularly tetra- and penta-fluorpropenes, in a variety of applications are disclosed.

First claim

What is claimed is:

1. A method for producing an automobile air conditioning system for use with 2,3,3,3-tetrafluoropropene (HFO-1234yf) comprising:
(a) providing an automobile vapor compression air conditioning system usable with refrigerant 1,1,1,2-tetrafluoroethane (HFC-134a) and having at least one compressor and at least one condenser; and
(b) providing a heat transfer composition in said system, said heat transfer composition consisting essentially of:
(i) at least about 50% by weight of HFO-1234yf; and
(ii) lubricant consisting essentially of polyalkylene glycol(s), and
(c) operating said automobile vapor compression air conditioning system, wherein (1) during at least a portion of said operating step said condenser operates with said refrigerant in a temperature range that includes 150° F.; (2) said HFO-1234yf and said lubricant are stable when in contact in said vapor compression air conditioning system; and (3) said refrigerant has no substantial acute toxicity as measured by inhalation exposure to mice and rats.

2. The method of claim 1 wherein said lubricant is present in the heat transfer composition in an amount of from about 30% to about 50% by weight.

3. The method of claim 1 wherein said HFO-1234yf is present in the heat transfer composition in an amount of at least about 70% by weight.

4. The method of claim 3 wherein said refrigerant has a Global Warming Potential (GWP) of not greater than about 150.

5. A method of conditioning the air in an automobile using an automobile air conditioning system including at least one compressor, at least one condenser and at least one evaporator, said method comprising:
(a) utilizing in said automobile air conditioning system a heat transfer composition consisting essentially of:
(i) a refrigerant comprising at least about 50% by weight of 2,3,3,3-tetrafluoropropene (HFO-1234yf); and
(ii) lubricant consisting essentially of polyakylene glycol(s); and
(b) removing heat from said HFO-1234yf by condensing said refrigerant in said condenser when said condenser is operating over a temperature range that that includes about 150° F.,
wherein (1) said refrigerant achieves in said system a capacity relative to HFC-134a of about 1 and a Coefficient of Performance (COP) relative to HFC-134a of about 1; (2) said refrigerant has a Global Warming Potential (GWP) of not greater than about 150; and (3) said refrigerant has no substantial acute toxicity as measured by inhalation exposure to mice and rats.

6. The method of claim 5 wherein said lubricant is present in the heat transfer composition in an amount of from about 30% to about 50% by weight.

7. The method of claim 6 wherein said refrigerant has no substantial acute toxicity as measured by inhalation exposure to mice and rats.

8. The method of claim 5 wherein said HFO-1234yf is present in the heat transfer composition in an amount of at least about 70% by weight.

9. A method for providing a system for cooling air in an automobile comprising:
(a) providing in the automobile a vapor compression air conditioning system having at least one compressor and at least one condenser; and
(b) providing in said system a heat transfer composition consisting essentially of:
(i) at least about 50% by weight of 2,3,3,3-tetrafluoropropene (HFO-1234yf); and
(ii) lubricant consisting essentially of polyakylene glycol(s), and
(c) operating said vapor compression automobile air conditioning system, wherein (1) said heat transfer composition has no substantial acute toxicity as measured by inhalation exposure to mice and rats; (2) during said operating step said condenser operates with said refrigerant in a temperature range that includes 150° F. and (3) said system achieves a capacity relative to HFC-134a of about 1 and a Coefficient of Performance (COP) relative to HFC-134a of about 1.

10. The method of claim 9 wherein said refrigerant heat transfer composition has a Global Warming Potential (GWP) of not greater than about 150.

Assignees

• Honeywell Int Inc

Inventors

• Singh Rajiv R
• Pham Hang T
• Shankland Ian

Classifications

• C09K5/044

  comprising halogenated compounds · CPC title

• C07C21/18

  containing fluorine · CPC title

• C09K3/30

  for aerosols (aerosol containers B65D83/14) · CPC title

• C09K2205/106

  Carbon dioxide · CPC title

• C07C19/08 Primary

  containing fluorine · CPC title