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Title: Fuel Efficiency Controls And Monitoring Systems
Author: Charles Ward
Source: American Gas Association 1987
Year Published: 1987
Abstract: For many years the attempt by Natural Gas Pipeline Company of America (Natural) to compute a specific fuel consumption was rather cumbersome. An average horsepower was determined from operating sheets. The parameters used included an average time operated, average daily pressures (suction, discharge), and an average loading step. The average horsepower was taken from horsepower capacity curves, The horsepower was multiplied by hours operated. Daily fuel consumption was determined from main engine fuel charts. By dividing these values, a specific fuel consumption was determined. The determined value was for several engines, so data were not available for individual units. In 1960, Natural began a program to supercharge most of the mainline compressors. This program included extensive performance testing. A positive meter was installed to measure fuel to the test units. It was decided that all supercharged units would have an individual orifice setting installed in the fuel run. After orifice installation, instrumentation was added to calculate and provide a fuel torque readout. This readout was in percentage of rated load. These torque values then could be compared with those for other units of the same type and running at the same loading conditions. These fuel torque readings could also be compared to curve torque readings from horsepower/ capacity curves.

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