Dual fibre optical probe measurements of solids volume fraction in a circulating fluidized bed
Journal article, 2005

The calibration of a dual fibre optical probe was experimentally investigated in a circulating fluidized bed. The particle volume fraction registered by the optical probe was compared to pressure drop measurements for a range of operating conditions. A theoretical calibration theory was applied to the probe signal to obtain the local and instantaneous particle volume fraction. It was found that glare points on the particles and the beam length from the probe to the particle determines the curvature of the calibration function to a large extent.

Solids volume fraction

Optical probe measurement

Circulating fluidized bed


Anna Magnusson


Robert Rundqvist


Alf-Erik Almstedt

Chalmers, Applied Mechanics, Combustion and Multiphase Flow

Filip Johnsson

Chalmers, Energy and Environment, Energy Technology

Powder Technology

0032-5910 (ISSN)

Vol. 151 1-3 19-26

Subject Categories

Mechanical Engineering



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