| 摘要 |
In a rotary heat exchanger, two groups of tubes are concentrically arranged about a drive shaft and the tubes have ports at their ends which are in communication with inlet and discharge chambers to which respective streams of gas are delivered so that two separate streams of gas may be circulated through the tubes. A solid granular material is supplied into the tubes of one group at one end and, near the other end, the tubes of the first and second groups are interconnected for passing the material from one group to the other.
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