Chemical Industry and Chemical Engineering Quarterly 2015 Volume 21, Issue 3, Pages: 419-427
https://doi.org/10.2298/CICEQ140618044P
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Pressure drop in packed beds of spherical particles at ambient and elevated air temperatures
Pešić Radojica (Faculty of Technology and Metallurgy, Belgrade)
Kaluđerović-Radoičić Tatjana (Faculty of Technology and Metallurgy, Belgrade)
Bošković-Vragolović Nevenka (Faculty of Technology and Metallurgy, Belgrade)
Arsenijević Zorana (IChTM - Department for Catalysis and Chemical Engineering, Belgrade)
Grbavčić Željko (Faculty of Technology and Metallurgy, Belgrade)
The aim of this work was the experimental investigation of the particle
friction factor for air flow through packed bed of particles at ambient and
elevated temperatures. The experiments were performed by measuring the
pressure drop across the packed bed, heated to the desired temperature by hot
air. Glass spherical particles of seven different diameters were used. The
temperature range of the air flowing through the packed bed was from 20ºC to
350ºC and the bed voidages were from 0.3574 to 0.4303. The obtained results
were correlated using a number of available literature correlations. The
overall best fit of all of the experimental data was obtained using Ergun [1]
equation, with mean absolute deviation of 10.90%. Ergun`s equation gave
somewhat better results in correlating the data at ambient temperature with
mean absolute deviation of 9.77%, while correlation of the data at elevated
temperatures gave mean absolute deviation of 12.38%. The vast majority of the
correlations used gave better results when applied to ambient temperature
data than to the data at elevated temperatures. Based on the results
obtained, Ergun [1] equation is proposed for friction factor calculation both
at ambient and at elevated temperatures.
Keywords: Pressure drop, packed bed, elevated temperature
Projekat Ministarstva nauke
Republike Srbije, br. ON172022