Without the circulating pump 72 to force {HEAD ~ convection} of {TAIL ~ the heated liquid} in the shell 12, the heat exchanger 10 would lose much of its efficiency 
of
Without the circulating pump 72 to force { HEAD ~ convection } of { TAIL ~ the heated liquid } in the shell 12 , the heat exchanger 10 would lose much of its efficiency
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH