r-500 retrofit

[mtgiran]

hi

Does anyone knows about r-500 retrofit for centrifugal compressors?
we need an azeotropic refrigerant with low change in chiller.

[Magoo]

from memory r500 is carrene 13, a blend by Carrier. Did not know that they used it in centrifs

[mtgiran]

No it is an azeotropic blend and we are using it in our york chillers with centrifigul compressors

[ptsac]

http://www.epa.gov/ozone/snap/refrigerants/lists/othcent.html
list from 2009.
McQuay centrifugals on r500 were retrofitted to R134a