| 摘要 |
The turbulence generator (2) comprises a sheet metal and a foam structure which is fixed on the sheet metal. The foam structure comprises metal foam, ceramic foam, a carbon foam, glass foam or plastic foam, such as polyurethane foam. The metal foam is provided from the group of the metal foam which is made of metal, such as iron, carbide, cobalt, niobium, silicon, titanium, chromium, nickel, magnesium, vanadium, tin, copper, aluminum or an alloy, such as an iron alloy, a copper alloy, a chromium alloy, aluminum alloy or a nickel alloy. |
