{TAIL ~ A low energy consumption apparatus} and method for treating a gas in which a main gas stream is cooled and heat is transferred by {HEAD ~ convection} to a liquid and to a secondary gas stream across a heat transfer surface 
{ TAIL ~ A low energy consumption apparatus } and method for treating a gas in which a main gas stream is cooled and heat is transferred by { HEAD ~ convection } to a liquid and to a secondary gas stream across a heat transfer surface
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