Heat-input-controlled gas-fired equipment and method

Heat-input-controlled gas-fired equipment and method

Gas-fired equipment comprising a heater having at least one burner and a fuel gas feed line containing a main fuel gas control valve or orifice, and a control system including a compensator designed to prevent changes in heating value of a fuel gas from upsetting the heat input rate to the equipment...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SORENSEN, RONALD C, CHIN, THOMAS G
Format: Patent
Sprache:eng
Schlagworte:
BLASTING
COMBUSTION APPARATUS
COMBUSTION PROCESSES
HEATING
LIGHTING
MECHANICAL ENGINEERING
REGULATING OR CONTROLLING COMBUSTION
WEAPONS
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Beschreibung
Zusammenfassung:Gas-fired equipment comprising a heater having at least one burner and a fuel gas feed line containing a main fuel gas control valve or orifice, and a control system including a compensator designed to prevent changes in heating value of a fuel gas from upsetting the heat input rate to the equipment is disclosed. The compensator is fed signals representing: (1) the pressure P of the fuel gas, and (2) the specific gravity of the fuel gas, G. The compensator then relates these signals so that the heat input rate q is maintained substantially constant in spite of variations in the fuel gas heating value. The relationship established in the compensator is Q/K = F(P,G) (1) where: