Plate type evaporator

Details Plate type evaporator Plate type evaporator

1981-01-27

1983-02-01

Richter, Sheldon J.

Heat exchange

Recirculation

165113, 165114, 165DIG10, F28B 908, F28B 902

Patent

active

043710344

ABSTRACT:
A plate type evaporator comprising a plurality of vertically extending plate elements assembled face-to-face to define therebetween alternate channels for a heating medium and for a liquid to be evaporated. In order to accelerate the nuclear boiling of the liquid in the liquid channels, the heat transfer surface of each plate element has a plurality of vertically extending transversely spaced ridges projecting toward the associated liquid channel, such ridges being in contact with the heat transfer surface of the opposed plate element to provide areas of contact assisting in the evolution of vapor bubbles and divide the liquid channel into narrow sections assisting in the generation of vapor, such sections also assuring that even in deeper places in the liquid channel, vapor bubbles will be generated without yielding to the liquid pressure; alternatively, each plate element has a porous layer formed on its heat transfer surface facing the liquid channel. These heat transfer constructions permit attainment of even higher boiling heat transfer if the liquid in the liquid channels is caused to circulate.

REFERENCES:
patent: 3097630 (1963-07-01), Kinyon et al.
patent: 3384154 (1968-05-01), Milton
patent: 4082606 (1978-04-01), Houston et al.
patent: 4141410 (1979-02-01), Takada

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