| Revista: | Brazilian journal of chemical engineering |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000308620 |
| ISSN: | 0104-6632 |
| Autors: | Westphalen, D.L1 Maciel, M.R .Wolf2 |
| Institucions: | 1Escola de Engenharia Maua, Departamento de Engenharia Quimica e de Alimentos, Sao Caetano do Sul, Sao Paulo. Brasil 2Universidade Estadual de Campinas, Faculdade de Engenharia Quimica, Campinas, Sao Paulo. Brasil |
| Any: | 1999 |
| Període: | Sep |
| Volum: | 16 |
| Número: | 3 |
| Paginació: | 279-284 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | Pinch Analysis is a methodology that allows the calculation of minimum hot and cold utilities consumption in a process from the knowledge of some data of the hot and cold streams. These energy targets are calculated through the Problem Table Method, that is based on the description of the process using constant heat capacity flowrates. This hypothesis is not valid in certain situations, particularly when phase changes are involved. A modification to Problem Table Method is proposed, that allows the use of enthalpies rigorously calculated from thermodynamic correlations. One case study is provided, where an error of 240% in hot target is verified if phase changes are neglected |
| Disciplines | Química |
| Paraules clau: | Ingeniería química, Análisis Pinch, Cambio de fase, Entalpía |
| Keyword: | Chemistry, Chemical engineering, Pinch analysis, Phase change, Enthalpy |
| Text complet: | Texto completo (Ver HTML) |
