Method of preventing recirculation pump cavitation and forced re

Details Method of preventing recirculation pump cavitation and forced re Method of preventing recirculation pump cavitation and forced re

1979-03-30

1981-07-14

Yuen, Henry C.

Liquid heaters and vaporizers

Circulation

With start-up operations

415 1, 417 18, 122406R, F22D 700

Patent

active

042780519

ABSTRACT:
A method of preventing a recirculation pump cavitation and a forced recirculation type steam-generating apparatus are disclosed in which water is forcibly circulated by a recirculation pump. The pressure of the steam-generating section of the steam-generating apparatus and the temperature of water at the suction side of the recirculation pump are detected. The rotational speed of the recirculation pump is reduced to a predetermined speed level when the difference between the saturation temperature associated with the detected pressure and the water temperature is reduced below a predetermined value, thus preventing the cavitation which otherwise might occur in the recirculation pump.

REFERENCES:
patent: 2613655 (1952-10-01), Waeselynck
patent: 2849989 (1958-09-01), Vorkanf
patent: 3617151 (1971-11-01), Scroggins
patent: 4003671 (1977-01-01), Huse et al.

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