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Impact of particle size dispersity on thermal conductivity of packed beds: Measurement, numerical simulation, prediction
Author(s) -
Tsotsas Evangelos,
Schlünder ErnstUlrich
Publication year - 1991
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.270140610
Subject(s) - dispersity , thermal conductivity , porosity , materials science , particle size , particle (ecology) , packed bed , mechanics , spheres , thermal , computer simulation , conductivity , thermodynamics , composite material , chemical engineering , chemistry , physics , engineering , geology , polymer chemistry , oceanography , astronomy
The influence of particle size dispersity on thermal conductivity of packed beds without fluid flow is investigated. For this purpose, new experimental data for bi‐ and polydispersed packings are presented and data from the literature reviewed. All data are tabulated. The results of numerical calculations carried out for regular arrangements of spheres are also discussed. The impact of particle size dispersity on thermal conductivity is shown to be primarily due to the change in bed porosity. Thus, prediction can be carried out in the same way as for monodispersed packings if based on the actual bed porosity. A model developed by Schlünder and co‐workers is revised and recommended for practical application.