| 摘要 |
The two heating surfaces of the exchanger are both provided within a jacket. The first heating surface is formed, in part, by blind tubes which project into the casing through which the primary gas flows. The second heating surface is disposed in the space between the feed pipe and the jacket and receives the flow of primary gas after the primary gas has passed over the blind tubes. The secondary gas passes into the interior of the blind tubes while a working medium flows through the second heat exchanger in heat exchange relation with the primary gas. Some of the returning cooled primary gas can be tapped off and supplied as a coolant through the tube plate in which the blind tubes are mounted.
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