The fluid shall have identical properties as R-11 and shall be compatible with Steel, copper, PTFE and shall be non-corrosive, non-toxic. The operating temperature will be up to - 80 degree C. This will not be used as a refrigerant and is to be used a heat trasnfer fluid. The fluid shall be eco freindly (low ODP & low GWP)
Answer:
propane, this used to be the way early freezers and refrigerators were operated, but you do not have to use it as a refrigerant
R-123?
r123
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