A Novel Gas Divider using Nonlinear Laminar Flow

John P. Nuszkowski, J. Schwamb, J. Esposito

Producción científica: Articlerevisión exhaustiva

Resumen

Gas dividers are important in emissions measurement since they continuously and accurately mix two gases to create a known gas concentration that is needed in the multi-point calibration of gas analyzers. A novel gas divider was designed using nonlinear laminar flow induced from the density change along the capillary channels due to the high-pressure drop (relative to the inlet gas pressure). The minor losses from entrance and exit effects can be ignored due to the high pressure loss from Hagen-Poiseuille's law relative to the minor losses. Small diameter wires inside of a tube were used to create capillary channels through which gas could flow. The gas divider, using nonlinear laminar flow, showed lower measurement uncertainty at high (90%) dilution levels than using linear laminar flow due to the higher-pressure drop at the same volumetric flow rates. Experiments showed the expected gas concentration from using the gas divider to be within 2% of the measured gas concentrations.
Idioma originalAmerican English
Páginas (desde-hasta)255-260
Número de páginas6
PublicaciónFlow Measurement and Instrumentation
Volumen52
DOI
EstadoPublished - dic 2016

Disciplines

  • Mechanical Engineering

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