{HEAD ~ A total gas stream} is subjected to {TAIL ~ initial sensible cooling} along a moisture impervious surface of a heat exchange element 
is subjected to
{ HEAD ~ A total gas stream } is subjected to { TAIL ~ initial sensible cooling } along a moisture impervious surface of a heat exchange element
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH