The modular heat exchanger can include U shaped fittings to interconnect said flow tubes so {HEAD ~ a number} of {TAIL ~ modules} can be placed in series to circumferentially extend around large tanks or the like 
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The modular heat exchanger can include U shaped fittings to interconnect said flow tubes so { HEAD ~ a number } of { TAIL ~ modules } can be placed in series to circumferentially extend around large tanks or the like
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH