In the heat transfer chamber there are {TAIL ~ a plurality} of first tubes connecting the feed chamber to the transfer chamber and {HEAD ~ a plurality} of second tubes connecting the transfer chamber to the delivery chamber 
In the heat transfer chamber there are { TAIL ~ a plurality } of first tubes connecting the feed chamber to the transfer chamber and { HEAD ~ a plurality } of second tubes connecting the transfer chamber to the delivery chamber
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH