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AssigneeANR Pipeline Company
InventorsThomas Robert Buchhop, Randall D'Alleva, Ronald Keith Darnell, Jack Ryan Little, Curtis Thomas Pedersen
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A parametric emissions monitoring system for monitoring stationary engine/compressor units coupled to a pipeline provides, in a reciprocating embodiment, reliable and accurate determinations of emission levels for NO.sub.x, CO, and total hydrocarbons (THC) from an emissions matrix primarily as a function of engine speed and engine torque. Validation of the determined emissions level is provided by comparing the values of a set of actual engine operating parameters with a respective value in a set of calculated engine operating parameters to determine whether the deviation of the actual operating parameter from the expected operating parameter is within a defined range, and thus whether the engine is operating within a defined control envelope. Each set of engine operating parameters includes spark ignition timing, fuel rate, and air manifold pressure. When the comparison indicates that the actual engine operating parameters diverge from the respective expected engine operating parameter, the emissions are determined from the emissions matrix, and are subjected to a bias factor being assessed against the NO.sub.x, CO and THC emissions level, the bias factor depending on the severity of the deviation. Moreover, these biased emission levels are further biased relatively up or down depending on selected ambient operating conditions, including relative humidity, power cylinder exhaust temperature deviation, and air manifold temperature.
In an energy conversion system for converting hydrocarbon based fuel into thermal energy to be used in a process wherein the system has associated therewith an emissions matrix, a method of determining parameter values indicative of exhaust emissions produced by the combustion of the fuel by the energy conversion system, said method comprising the steps of:
A method for determining parameter values indicative of exhaust emissions produced by the combustion of hydrocarbon based fuel by a stationary engine having an emissions data structure, said method comprising the steps of:
A system for determining parameter values indicative of the exhaust emissions produced by the combustion of hydrocarbon based fuel by a stationary engine having an emissions matrix, said system comprising:
A method for determining parameter values indicative of the exhaust emissions produced by the combustion of hydrocarbon based fuel by a stationary engine having an emissions data structure, said method comprising the steps of:
Dependencies are inferred from the claim text.