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A.Mortezania
03-03-2017, 07:05 AM
Dear Friends,

Would you please let me know what is the meaning of this sentence ?
"All refrigeration compressors except centrifugal compressors contain oil"

At centrifugal compressor we do not use oil ?

Sincerely yours.

Brian_UK
03-03-2017, 01:30 PM
Generally the motor is external to the compressor and the shaft bearings are also outside of the refrigerant circuit.

There is a lubrication system but it is <within><correction - outside> the refrigerant circuit.

Download the manual for a Carrier 19XRV chiller and look at the lubrication diagram, it will be helpful.

http://eto.carrier.com/litterature/iom/11989_07_2011_IOM_19XR_LR.pdf

A.Mortezania
04-03-2017, 07:19 PM
Generally the motor is external to the compressor and the shaft bearings are also outside of the refrigerant circuit.

There is a lubrication system but it is within the refrigerant circuit.

Download the manual for a Carrier 19XRV chiller and look at the lubrication diagram, it will be helpful.

http://eto.carrier.com/litterature/iom/11989_07_2011_IOM_19XR_LR.pdf

Thanks a lot Brian_UK.