METERING OF GAS-SOLID FLOWS

This paper presents experimental test data for the pressure drop and discharge coefficients of obstruction type flow meters in gas-solid turbulent flows. Three different obstruction devices, namely, orifice, nozzle, and venturimeter have been used. The effects of the main parameters of the flow such as Reynolds number, particle loading ratio, particle density, and particle size on the pressure drop and the discharge coefficients of these obstruction devices are examined in detail, and some useful empirical relations are derived. The results show that the pressure drop always increases due to the addition of solid particles to the flow, and there is a strong relation between the pressure drop and the main parameters mentioned earlier. In general the discharge coefficient of these devices was found to decrease with the addition of solids.