System for the measurement and control of the heat input to a gas burner
AssigneeThe Babcock & Wilcox Company
InventorsAzmi Kaya, Marion A. Keyes, IV, Michael P. Lukas
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Abstract
A system for the measurement and control of the rate of BTU input to a gas burner wherein a signal is generated corresponding to the square root of the product of the burner inlet pressure multiplied by the in-situ density olf the gas, which, multiplied by a signal of constant value, corresponds to the mass flow of gas to the burner. This signal is then multiplied by a second signal of constant value to generate a signal corresponding to the rate of BTU input to the burner and which is compared with a set point signal to regulate the mass flow of gas to the burner as required to maintain the rate of BTU input to the burner at set point.
Claims4
In a system for the measurement of the rate of BTU input to a gas burner discharging into a furnace at atmospheric pressure, comprising, means generating a first signal proportional to burner inlet gauge pressure, means generating a second signal proportional to the in-situ density of the gas at the burner inlet and means responsive to the first and second signals generating a third signal proportional to the square root of the product of the first signal multiplied by the second signal which represents the weight rate of gas flow to the burner, means generating a constant value signal proportional to the BTU per pound of the gas and means responsive to said third and constant value signals generating a fourth signal proportional to the product of said third and constant value signals which represents the rate of BTU input to the burner.
Dependencies are inferred from the claim text.