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