Stream surfaces, volume flow rate between

From the definition of the axisymmetric stream function and elementary continuity considerations, the volume flow rate between any two stream surfaces is simply IttA I. It follows that the mass flux of particles intercepted by the spherical collector is... 

By its physical meaning, the difference 2n y/- - y/2) is equal to the volume flow rate of liquid between two stream surfaces y/ = y/i and y/ = y/2. If the particles distribution far from the sphere is homogeneous, with mass concentration / q, the mass flux of the particles to the sphere is equal to... 

Activity tests - A detailed description of the two apparatuses has been reported elsewhere [7], Experiments were carried out in the presence of steam and SO2 at varying temperature in the range 300-390°C, that is under realistic conditions of power plant flue gas treatment. In DeNOx tests the feed stream consisted of 500 ppm NO, 550 ppm T 3, 500 ppm SO2, 10% by volume H2O and 2% by volume O2 in N2. The SO2 oxidation activity was measured in a dedicated apparatus wherein 1000 ppm SO2, 10% H2O, 2% O2 were fed in a N2 stream. Total flow rates were such that the resulting values of Area Velocity, AV (the ratio between the volumetric flow rate and the geometric surface of the monolith), equaled 33 or 10 mNTP/h (NTP = 273K and 1 atm). 

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