Process and a control system for controlling the exit temperatur

Details Process and a control system for controlling the exit temperatur Process and a control system for controlling the exit temperatur

1975-09-26

1977-06-28

Sprague, Kenneth W.

Liquid heaters and vaporizers

Steam treatment

Automatic heat regulation of superheater

122487, 236 14, F22G 512

Patent

active

040318630

ABSTRACT:
Measurements of the instantaneous flow of heat delivered to the vapor generator and the quantity of vapor flowing momentarily through the contact heating surface are made and the resultant signals are compared by subtraction or division to obtain a comparison signal. The comparison signal is then imposed on a control element in the form of a valve to cause an injection of more or less water into the vapor flowing into the heating surface in order to regulate the exit temperature of the vapor.

REFERENCES:
patent: 2966896 (1961-01-01), Vogler
patent: 3089308 (1963-05-01), Halle
patent: 3096744 (1963-07-01), Profos
patent: 3134367 (1964-05-01), Halle
patent: 3175541 (1965-03-01), Hottenstine

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