Preferably, the temperature of the air supplied to the first zone is 40° to 80° C. below the air supplied to {HEAD ~ the following zone} or {TAIL ~ zones} 
Preferably , the temperature of the air supplied to the first zone is 40 ° to 80 ° C. below the air supplied to { HEAD ~ the following zone } or { TAIL ~ zones }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL