A flow passageway of fluid on the side of the shell is composed of annular spaces formed between the outer circumference of {HEAD ~ the heat transfer tubes} and the inner circumferences of {TAIL ~ the holes} in the baffle plates 
A flow passageway of fluid on the side of the shell is composed of annular spaces formed between the outer circumference of { HEAD ~ the heat transfer tubes } and the inner circumferences of { TAIL ~ the holes } in the baffle plates
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH