| 摘要 |
<p>Fresh air (5) flows to the material storage vessel (1) via the heat exchanger (4) and heater (21). Now hot, it passes through the material, drying it, and then out through a duct (17, 18, 19). This duct is the hot side of the heat exchanger (4). The air (5) supply duct (6) connects to the casing (9) housing the heat exchanger. This casing has a partition (10) forming two spaces (11, 12) through which the cold air flows, reversing its direction between them. Each space (11, 12) contains a duct section (18, 19) for the return air, which heats the cold, in-going air. The supply- and the return air flow co- or counter-currently, in this heat exchanger.</p> |
