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Heat and mass transfer in packed beds
Abstract
Eddy mass diffusivities, effective thermal conductivities, and wall heat transfer coefficients were measured in an 8‐in. tube packed with 1/2‐ and 3/4‐in. glass spheres. Superficial mass velocities ranged from 110 to 1,640 Ib./(hr.) (sq. ft.), corresponding to modified Reynolds numbers of 100 to 2,000. Air was the main stream fluid in all cases. The modified Peclet group (D p V/E*td) was found to be constant at a value of about 12 in the region of fully developed turbulence. At lower Reynolds numbers this group varied with the flow rate. Effective thermal conductivities were correlated by an equation. Modified Peclet numbers for heat transfer were about 25% less than those for mass transfer. The wall heat transfer coefficient varied with the superficial mass velocity as hw = 0.090 (Go0.75). An explanation is suggested for the similarity in velocity dependence between these values and those for turbulent flow in an empty tube, based on channeling at the wall.
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Citations
Cited by
Thermal dispersion in a porous medium
Hsu, C. T., & Cheng, P. (1990) · International Journal of Heat and Mass Transfer · doi:10.1016/0017-9310(90)90015-m · Cited by 686
Zhang, P., Xiao, X., & Ma, Z. W. (2016) · Applied Energy · doi:10.1016/j.apenergy.2015.12.043 · Cited by 555
Recent advances in application of nanofluids in heat transfer devices: A critical review
Sajid, M. U., & Ali, H. M. (2019) · Renewable and Sustainable Energy Reviews · doi:10.1016/j.rser.2018.12.057 · Cited by 544
TauFactor: An open-source application for calculating tortuosity factors from tomographic data
Cooper, S. J., Bertei, A., Shearing, P. R., Kilner, J. A., & Brandon, N. P. (2016) · SoftwareX · doi:10.1016/j.softx.2016.09.002 · Cited by 429
de Wasch, A. P., & Froment, G. F. (1972) · Chemical Engineering Science · doi:10.1016/0009-2509(72)87012-x · Cited by 391
Metadata
- Authors
- Plautz, D. A., & Johnstone, H. F.
- Venue
- AIChE Journal
- Publisher
- Wiley
- Published
- 1955-06
- Volume
- 1
- Issue
- 2
- Pages
- 193-199
- ISSN
- 0001-1541 (ISSN-L)
- 1547-5905
- OpenAlex
- W1988963719
- Cited by
- 969
- References
- 0
- FWCI
- 3.62
- Type
- journal article
- Language
- en
- Open access
- closed
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- Plautz, D. A., & Johnstone, H. F. (1955). Heat and mass transfer in packed beds. AIChE Journal. https://doi.org/10.1002/aic.690010211
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