Journal Article10.1016/0009-2509(74)80059-X
Equivalence of one- and two-phase models for heat transfer processes in packed beds: one dimensional theory
D. Vortmeyer,R.J. Schaefer +1 more
233
TL;DR: In this article, the axial effective thermal conductivity in the one-phase model and the heat transfer coefficient in the twophase model were derived without assuming that the solid and gas temperatures are equal.
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About: This article is published in Chemical Engineering Science. The article was published on 01 Feb 1974. The article focuses on the topics: Heat transfer & Heat transfer coefficient.
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Citations
Thermal energy storage technologies and systems for concentrating solar power plants
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Theoretical prediction of effective heat transfer parameters in packed beds
TL;DR: In this article, a theory for predicting the effective axial and radial thermal conductivities and the apparent wall heat transfer coefficient for fluid flow through packed beds is derived from a two-phase continuum model containing the essential underlying and independently measurable heat transfer processes.
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One- and Two-Equation Models for Transient Diffusion Processes in Two-Phase Systems
Michel Quintard,Stephen Whitaker +1 more
TL;DR: In this paper, the authors examined the process of transient heat conduction for a two-phase system in terms of the method of volume averaging, and compared results from the two-equation model with results from a single-phase model.
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Reverse-Flow Operation in Fixed Bed Catalytic Reactors
TL;DR: The transition from the usual steady-state mode of continuous processes toward forced unsteady state conditions (FUSC) has been discussed in chemical engineering literature since the beginning of the 1960s as mentioned in this paper.
322
A numerical study of interfacial convective heat transfer coefficient in two-energy equation model for convection in porous media
TL;DR: In this article, a numerical experiment was conducted to determine the interfacial convective heat transfer coefficient in the two-energy equation model for convection in porous media, which is needed when the local thermal equilibrium between the fluid and solid phases breaks down.
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References
Heat transfer: A liquid flowing through a porous prism
TL;DR: The problem of finding the temperature distributions has been solved assuming the well-known laws governing the transfer of heat from a liquid in turbulent motion to a solid and the use of some interesting mathematical functions which are related to theWell-known Bessel Functions.
751
Longitudinal dispersion mechanisms in packed beds
TL;DR: In this paper, a theoretical study of longitudinal dispersion mechanisms during steady flow of a fluid through unconsolidated spherical beads is presented, and the exact solution, involving an infinite integral, is approximated to an error function form.
50
Moving reaction zones in fixed bed reactors under the influence of various parameters
D. Vortmeyer,W. Jahnel +1 more
TL;DR: In this paper, a fixed bed catalytic reactor with a fast exothermic reaction was considered and a solution of the interdependent and unsteady state set of the energy and material balance differential equations was obtained.
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