The method 4 wherein {HEAD ~ the ethane or propane constituent} of the multicomponent refrigerant is replaced with ethylene or {TAIL ~ propylene}, respectively 
The method 4 wherein { HEAD ~ the ethane or propane constituent } of the multicomponent refrigerant is replaced with ethylene or { TAIL ~ propylene } , respectively
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH