| 摘要 |
<p>A fuel cooler comprises an inner tube (1) and a jacket tube (2) arranged concentrically therewith. The inner tube (1) has helical ribs on its inner surface and helically encircling outer ribs (1'). The inlet orifice (4) and outlet orifice (6) for the fuel are arranged at opposite ends of the cooler. A coolant flows axially through the inner tube (1), whilst the fuel is conveyed, via the inlet orifice (4) and the outlet orifice (6), through the annular space (3) between the inner tube (1) and jacket tube (2). <IMAGE></p> |
