ISSN Online: 2377-424X
ISBN Print: 978-1-56700-421-2
International Heat Transfer Conference 15
A Numerical Model of Transient Thermal Transport Phenomena in a High-Temperature Solid-Gas Reacting System for CO2 Capture Applications
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.
SCHLÜSSELWÖRTER:
Solar energy, CO2 capture, Porous media, Mass transfer, Heat transfer, High temperature, Numerical simulation