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Rising Film Evaporator

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Rising Film Evaporator
The rising film evaporator was one of the first continous operation type evaporators that was used in the food industry. This system uses a vertical tube bundle with steam condensing on its outside surface. Liquid on the inside of the tube is brought to a boil with the vapor generated forming a core in the center of the tube. As the fluid moves up the tube, more vapor is formed resulting in a higher central core velocity that forces the remaining liquid to the tube wall. Higher vapor velocities, in turn, result in thinner and more rapidly moving liquid film. This provides higher heat transfer coeficients and shorter product residence time.

The rising film evaporator has vastly improved product quality over previous types of evaporators. In addition, higher heat transfer coeficients have resulted in reduced heat transfer area requirements, thus resulting in a lower initial capital investment.

Evaporator product information is available in our equipment catalog.


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