| Journal: | Journal of the Brazilian Society of Mechanical Sciences and Engineering |
| Database: | PERIÓDICA |
| System number: | 000312224 |
| ISSN: | 1678-5878 |
| Authors: | Jabardo, J.M. Saiz1 Silva, E. Fockink da Ribatski, G Barros, S.F. de |
| Institutions: | 1Universidade de Sao Paulo, Departamento de Engenharia Mecanica, Sao Carlos, Sao Paulo. Brasil |
| Year: | 2004 |
| Season: | Abr-Jun |
| Volumen: | 26 |
| Number: | 2 |
| Pages: | 218-230 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental |
| English abstract | This paper reports results from an investigation on the performance of the Rohsenow's type of correlation when applied to the nucleate boiling of halocarbon refrigerants over cylindrical surfaces of different material. Experimental data for refrigerants R-11, R-123, R-12, and R-134a have been raised and fitted according to two different procedures. It has been determined that exponents m and n are weakly affected by the refrigerant, and surface material and finishing. Liquid/surface combinations and surface roughness affect the coefficient Csf. A correlation has been developed for Csf in terms of the liquid/surface combination and surface roughness. The resulting correlation has been evaluated through the experimental data used in the fitting process and results obtained elsewhere. Deviations of correlation with respect to the experimental heat transfer coefficient are within acceptable ranges |
| Disciplines: | Ingeniería |
| Keyword: | Ingeniería mecánica, Ingeniería química, Organohalógeno, Refrigerantes, Cilindros, Ebullición nucleada, Rohsenow |
| Keyword: | Engineering, Chemical engineering, Mechanical engineering, Halocarbon, Refrigerants, Cylinders, Nucleate boiling, Rohsenow |
| Full text: | Texto completo (Ver HTML) |
