| 摘要 |
An all ceramic heat exchanger for heating ambient air from hot waste fumes. In the preferred embodiment, the inlet and outlet tube walls for the ambient air are formed with removable inserts having bell-shaped openings formed therein. Central tube walls include an internal passageway formed therein and serve the dual purpose of supporting the matrix of transversely extending tubes and directing the flow of ambient air to other zones of the heat exchanger.
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