| 摘要 |
<p>Different raw materials e.g. vegetable and animal products, require different drying schedules. The raw material is fed to an oven with independent dry temp. and humidity thermometers linked via cams to automatic relay devices controling heat and moisture input. An overriding temp. cut out may be installed to prevent material damage due to relay failure. The materials may be dried at rates suitable for their individual characteristics, to give an efficient and economic automatic programmed rying unit.</p> |
