| Journal: | Brazilian journal of chemical engineering |
| Database: | PERIÓDICA |
| System number: | 000308620 |
| ISSN: | 0104-6632 |
| Authors: | Westphalen, D.L1 Maciel, M.R .Wolf2 |
| Institutions: | 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 |
| Year: | 1999 |
| Season: | Sep |
| Volumen: | 16 |
| Number: | 3 |
| Pages: | 279-284 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | 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 |
| Keyword: | Ingeniería química, Análisis Pinch, Cambio de fase, Entalpía |
| Keyword: | Chemistry, Chemical engineering, Pinch analysis, Phase change, Enthalpy |
| Full text: | Texto completo (Ver HTML) |
