Comparative Study of Air Flow Measurement Techniques & How They Compare to Lab Tested Results
While testing a Williams Gas Pipeline Clark HBA8 turbocharger at the Kansas State National Gas Machinery Lab, several different methods were used to determine the turbocharger air flow rate. During the test, emissions data was recorded and the results were used to calculate the air flow rate using a carbon balance method as well as EPA Method 19. Also during the test, the air flow rate was directly measured using a Kurz anemometer installed in the turbocharger turbine exhaust. A turbocharger monitoring system was installed during the test and the pitot tube differential pressure data collected by the turbocharger monitoring system was to determine the air flow rate through the turbocharger compressor. All of the flow rate methods were compared to the actual measured flow rate collected by the NGML test cell ASME venture nozzle to determine viable flow testing methods that could then be used in the field. All methods were then used in the field to compare to the turbocharger monitoring system standard.