Results 161 to 170 of about 2,280 (207)
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Measurement of Voidage of Sinter Ores in the Tubes
Industrial & Engineering Chemistry Research, 2012An industrial vertical tank (cost $200,000) was produced to recover the heat of sinter ores in our laboratory, the voidage along the height direction needs to be studied in order to determine the best height of sintering layer in it. In this paper, the bulk bed voidage of sinter ores in cylindrical polyvinylchloride tube (PVC-U) was measured by the ...
Penggang Zhang +4 more
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Ekofisk Reservoir Voidage and Seabed Subsidence
Journal of Petroleum Technology, 1990Summary Field data describing the time lag between Ekofisk subsidence and reservoirvoidage are given. A method to discriminate between real subsidence variationsand random-data errors and a procedure to derive a contemporary relationshipbetween reservoir voidage and seabed subsidence are presented.
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Elucidation of mean voidage in packed beds
The Canadian Journal of Chemical Engineering, 1991AbstractMean voidage is a global structural property of packed beds and its accurate prediction is therefore of great significance in any plug‐flow type model. A general correlation has been developed which enables this parameter to be evaluated. The work reported here deals with mono‐size non‐porous spherical packing, but also tackles related issues ...
E. A. Foumeny +3 more
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Local Bed Voidage in Spouted Beds
Industrial & Engineering Chemistry Research, 2000The effect of operating conditions (base angle, gas inlet diameter, stagnant bed height, particle diameter, and gas velocity) on longitudinal and radial profiles of bed voidage has been studied in the spout, annulus, and both the fountain core and periphery of spouted beds, by means of an optical fiber probe.
Martin Olazar +4 more
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Investigation of the aggregative fluidized bed voidage
Powder Technology, 1977Abstract The effect of the superficial velocity, the free-falling criterion and the bed diameter on the voidage of aggregative fluidized systems has been investigated. Correlations for calculating the bed voidage of systems with and without wall effect have been proposed.
K. Doichev, G. Boichev
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Radial voidage variation in CFB risers
The Canadian Journal of Chemical Engineering, 2001AbstractA new correlation for estimating local voidage in CFB risers is provided based on data obtained in a riser of diameter 76 mm and height 6 m using FCC particles at superficial gas velocities between 4 and 8 m/s and solids circulation fluxes up to 425 kg/m2s.
Allan S. Issangya +3 more
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Consideration of Voidage Replacement Ratio in Well Placement Optimization
SPE Kuwait International Petroleum Conference and Exhibition, 2012Abstract Determining the optimum location of wells during waterflooding contributes significantly to efficient reservoir management. Often, Voidage Replacement Ratio (VRR) and Net Present Value (NPV) are used as indicators of performance of waterflood projects.
Abeeb A. Awotunde, Najmudeen Sibaweihi
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The voidage problem in gas-electrolyte dispersions
Journal of Applied Electrochemistry, 1987Assessing the ohmic interelectrode resistance of electrochemical reactors with gas evolution requires data for the gas void fraction of gas-electrolyte dispersions. A voidage equation is derived taking account of the internal liquid flow in stationary electrolytes and at small liquid superficial velocities.
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Voidage and particle velocity profiles in a spout‐fluid bed
The Canadian Journal of Chemical Engineering, 2000AbstractDetailed hydodynamic measurements have been obtained for fully cylindrical spout‐fluid beds of 1.3 mm, 1.8 mm and 2.5 mm glass beads in a fully cylindrical column of diameter 152 mm using three different types of optical fibre probes. The reallocation of up to 43% of the air to auxiliary air introduced through the conical base caused some ...
Freitas, Lap +4 more
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Voidage function in particular fluid systems
Powder Technology, 1978Abstract A correlation for the sedimentation velocity of suspended particles in a finite stationary fluid based on dynamic equilibrium of individual particles is presented. This correlation maybe useful over a wide range of Reynolds number and can be extended to obtain a general correlation predicting the pressure drop in fixed bed, provided that ...
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