An exhaust annular gap is formed between the intermediate and outer cylinders such that hot exhaust gases flow through {TAIL ~ the exhaust annular gap} and {HEAD ~ heat} is transferred from the hot exhaust gases to the cathode air stream 
An exhaust annular gap is formed between the intermediate and outer cylinders such that hot exhaust gases flow through { TAIL ~ the exhaust annular gap } and { HEAD ~ heat } is transferred from the hot exhaust gases to the cathode air stream
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH