Method and apparatus for controlling steam temperature at a boil

Details Method and apparatus for controlling steam temperature at a boil Method and apparatus for controlling steam temperature at a boil

1979-02-16

1980-12-30

Yuen, Henry C.

Liquid heaters and vaporizers

Steam treatment

Boilers with superheaters

122479R, 122487, 236 14, 318561, F22G 500

Patent

active

042417015

ABSTRACT:
Boiler outlet temperature in a sliding pressure operation is controlled in a routine way by varying the fluid or heat distribution in the boiler. The effect a change in pressure has on steam temperature is anticipated by supplying a feedforward signal to the temperature control system from drum pressure so as to minimize temperature variations at the boiler outlet.

REFERENCES:
patent: 2526898 (1950-10-01), Powell et al.
patent: 2806192 (1957-09-01), Bristol
patent: 3515102 (1970-06-01), Hamilton, Jr.
patent: 3601588 (1971-08-01), Bristol
patent: 3758762 (1973-09-01), Littman et al.
patent: 3902111 (1975-08-01), Pfisterer, Jr.
patent: 4015548 (1977-04-01), Schuss
patent: 4031863 (1977-06-01), Laubli

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