The air cooling system 17 wherein {TAIL ~ said first and second heat exchange means} comprise {HEAD ~ tube type heat exchangers} 
The air cooling system 17 wherein { TAIL ~ said first and second heat exchange means } comprise { HEAD ~ tube type heat exchangers }
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD