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FBM Hudson - Jacketed Vessels
There many examples that show better performance using dimpled jacket of the type “I” instead conventional system such as coil, half-pipe or double wall. With the same pressure inside the jacket the wall thickness is less, so this reduction allows:
- Less costs for row material and working time
- better thermal exchange
- better efficiency
Using dimpled jacket type “I” is possible to cover almost the entire surface, also with nozzles or other disturbing elements.
Thermal exchange rate is higher because it is possible to optimise internal air space to the media and process requirements; it is possible to use free dimple disposal for best fluid dynamic. It is possible to jacket different shapes (cochlea container, formed head, conical bottom etc) with excellent thermal performance also using water or oil as media.
Thin wall thickness are permitted with steam or high pressure in the jacket.
In vessels designed for vacuum or pressure lower than atmosphere, the jacket can be used or contributed for the calculation of the wall thickness as part (finite element calculation) thus reducing the wall thickness for consideration under external pressure.
The jacket shape allows high cycling (pressure and thermal) without fatigue problems. High temperature difference between thermal media and products inside the vessel does not create undesired stresses or troubles to the jacket, due to the different expansion rate. The jacketed technology allows a great thickness reduction for the vessel in comparison to other traditional systems and important prices economy.