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A comprehensive numerical model was developed to predict the electrochemical performance of solid oxide fuel cell (SOFC). The multi-component Lattice Boltzmann (LB) model based on kinetic theory for gas mixtures combined with a representative elementary volume (REV) scale LB algorithm based on the Brinkman equation for flows in porous media, the Butler–Volmer equation and Ohm's law were adopted to...
A comparative study on CO 2 gasification kinetics of flax straw char produced by two different processes, namely, torrefaction and pyrolysis was investigated using a TGA (thermogravimetric analyzer). The objective of this research was to investigate the diffusion and surface reactions that occur during the CO 2 gasification of the torrefied and pyrolyzed char particles. Gasification...
Packed column strippers are being used for removing VOCs (volatile organic compounds) contaminants from drinking and industrial waste waters. In order to evaluate the capability of packed towers for reducing the contaminant concentration to its permissible limits, a mathematical mass transfer model is developed. The model, which is based on resistances-in-series approach and considers liquid-vapor...
Nowadays, computer models have contributed to a better understanding and solution of long standing practical combustion problems in HCCI (homogenous charge compression ignition) engines. In this study, a new multi zone model is developed for HCCI engines simulation. Model contains four different types of zones, which are core, boundary layer, zones between them, and crevice zone. Heat and mass transfer...
Solid sorbents are frequently adopted for gas component separation in the chemical industry. Over the last decades, solid sorbents have also been applied for the benefit of indoor air quality and humidity control in modern building design. Adsorptive rotors have been designed for the removal of water vapor, CO and VOCs from indoor environments. Although the adsorption of water vapor by a specific...
Sorption and thermochemical heat storage attracted considerable attention recently because it offers various opportunities in the design of renewable and sustainable energy systems. Heat and mass transfer remains currently the main limitations whose overcoming would facilitate their introduction to the market, a step which has been pointed out as long overdue. In this paper, main aspects regarding...
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