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International Heat Transfer Conference 15

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

A Numerical Model of Transient Thermal Transport Phenomena in a High-Temperature Solid-Gas Reacting System for CO2 Capture Applications

Lindsey D. Yue
Research School of Engineering, The Australian National University, Canberra, ACT, 2601, Australia

Wojciech Lipinski
Research School of Engineering, The Australian National University, Canberra ACT 2601, Australia

DOI: 10.1615/IHTC15.sol.009014
pages 7609-7621


SCHLÜSSELWÖRTER: Solar energy, CO2 capture, Porous media, Mass transfer, Heat transfer, High temperature, Numerical simulation

Abstrakt

A numerical model coupling transient radiative, convective, and conductive heat transfer and mass transfer to chemical kinetics of a heterogeneous solid? reacting system has been developed and applied to a model reaction, the decomposition of calcium carbonate into calcium oxide and carbon dioxide. The model reaction is one of two reactions involved in calcium oxide looping, a proposed thermochemical process suitable for use with concentrated solar radiation for the capture of carbon dioxide. The analyzed system is a single, porous particle in an idealized, reactor–like environment that is subjected to concentrated solar irradiation. The finite volume and explicit Euler methods are used to solve the governing equations numerically. The model predicts the timedependent temperature distributions as well as local solid and fluid phase composition. Complete particle decomposition for the presented simulation case is reached in 35.5 s.

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