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1. (WO2010077898) TRANS-CHLORO-3,3,3-TRIFLUOROPROPENE FOR USE IN CHILLER APPLICATIONS
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CLAIMS

We Claim:

1. A method for producing refrigeration comprising compressing a refrigerant composition comprising 1233zd(E), wherein said compressing occurs within a centrifugal chiller system.

2. The method of claim 1 wherein the COP is between 4.7 and 4.96.

3. The method of claim 1 wherein the refrigerant composition comprises at least 50 wt% 1233zd(E) based on total weight of the composition.

4. The method of claim 1 wherein the refrigerant composition comprises at least 70 wt% 1233zd(E) based on total weight of the composition.

5. The method of claim 1 wherein said refrigerant composition comprises a hydrofluoroolefin consisting essentially of 1233zd, wherein a majority of said 1233zd is 1233zd(E).

6. The method of claim 5 wherein said 1233zd consists of 1233zd(E) and 1233zd(Z) in a ratio of about 2: 1 to about 99: 1.

7. The method of claim 6 wherein said ratio is about 4: 1 to about 19:1.

8. A method for producing refrigeration comprising compressing a refrigerant comprising at least 50 wt% of 1233zd(E) in a chiller and thereafter evaporating the refrigerant in the vicinity of a body to be cooled.

9. The method of claim 8 wherein said refrigerant consists essentially of 1233zd(E).

0. A centrifugal chiller system comprising:

a. a centrifugal compressor; and

b. a refrigerant comprising 1233zd(E), wherein said refrigerant is disposed within said centrifugal compressor.