Evaluation of the rohsenow correlation through experimental pool boiling of halocarbon refrigerants on cylindrical surfaces
AUTOR(ES)
Jabardo, J. M. Saiz, Silva, E. Fockink da, Ribatski, G., Barros, S. F. de
FONTE
Journal of the Brazilian Society of Mechanical Sciences and Engineering
DATA DE PUBLICAÇÃO
2004-06
RESUMO
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.
Documentos Relacionados
- Efeito da geometria na ebulição nucleada de refrigerantes halogenados em tubos horizontais
- Experimental and theoretical study of pool boiling heat transfer to amine solutions
- Estudo teórico-experimental da perda de pressão durante a ebulição convectiva de refrigerantes halogenados no interior de microcanais circulares
- An Experimental Evaluation of Genetic Correlation
- Correlation between catalytic activity and bonding and coordination number of atoms and molecules on transition metal surfaces: Theory and experimental evidence