| Revue: | Brazilian journal of chemical engineering |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000308963 |
| ISSN: | 0104-6632 |
| Autores: | Lima, D.R1 Farias, S.N Lima, A.G.B |
| Instituciones: | 1Universidade Federal de Campina Grande, Centro de Ciencias e Tecnologia, Campina Grande, Paraiba. Brasil |
| Año: | 2004 |
| Periodo: | Dic |
| Volumen: | 21 |
| Número: | 4 |
| Paginación: | 667-680 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | This work presents an analytical modelling of mass transfer in spheroidal solids using a liquid diffusion model. The diffusion equation, written in cylindrical coordinates, is solved using the Galerkin method with a constant diffusion coefficient and an equilibrium boundary condition at the surface of the solid. Results on the drying kinetics, and moisture content distribution in the solids are presented and analysed. The iso-concentration lines for moisture content show that the drying process is faster in sharp areas,. It was verified that solids with a larger area/volume ratio dry faster. The results obtained are consistent so the model presented can be used to solve diffusion problems such as drying, wetting, heating and cooling of solids with a shape that varies from a circular disk to an infinite cylinder, including a sphere and ellipsoids |
| Disciplinas: | Ingeniería |
| Palabras clave: | Ingeniería mecánica, Secado, Transporte de masa, Esferoides, Método de Galerkin |
| Keyword: | Engineering, Mechanical engineering, Drying, Mass transport, Spheroids, Galerkin method |
| Texte intégral: | Texto completo (Ver HTML) |
