Abstract
Low air-concentrations of various flowing steam-air mixtures have been determined by a sampling loop process. The process depends upon the measurements of the vacuum pressure of the remaining air in the sampling loop after immersing it in an ice-water bath. From the insignificant differences of the estimated air-concentrations for the various experimental runs it can be concluded that the sampling loop process is of satisfactory performance in estimating air traces in flowing steam-air mixtures.
Zusammenfassung
Es wurde der Luftgehalt bei niedrigen Luftkonzentrationen verschiedener strömender Dampf-Luft-Gemische mit Hilfe einer Auffangmethode bestimmt. Die Methode beruht auf Messungen des Druckes der Luft, die nach Auskondensation des Dampfes in einem Eis-Wasserbad verbleibt. Aus den geringen Unterschieden zu den berechneten Luftkonzentrationen verschiedener Experimente kann geschlossen werden, daß diese Auffangmethode zufriedenstellend bei strömenden Dampf-Luft-Gemischen niedriger Luftkonzentration arbeitet.
Similar content being viewed by others
References
Potter, C. J.; Pope, D.; Tanner, D. W.; West, D.: Heat transfer in dropwise condensation. Part 2. Int. J. Heat and Mass Transfer 8 (1965) 247
McCormick, J. L.; Westwater, J. W.: The nucleation sites for dropwise condensation. Chemical Eng. Sci. 20 (1965) 1021
Hampson, H.: The condensation of steam on a tube with filmwise or dropwise condensation and in the presence of a non-condensible gas. Int. Heat-Transfer Conf. ASME (1963) 310
Sparrow, E. M.; Lin, S. H.: Condensation heat transfer in the presence of a non-condensible gas. J. Heat Transfer (C), 86 (1964) 430–436
Rose, J. W.: Condensation of a vapour in the presence of a non-condensible gas. Int. J. Heat and Mass Transfer 12 (1969) 233–237
Denny, V. G.; Mills, A. F.; Jusionis, V. J.: The effect of noncondensible gases on laminar film condensation of liquid metals. J. Heat and Mass Transfer, ASME 93/No. 31971 (1971) 297–304
Abdulhadi, M. I.: Dropwise condensation of different steam-air mixtures on substrates of various materials. Canadian J. Chemical Eng. 57, No. 4 (1979) 451–457
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Abdulhadi, M. Estimation of air traces in steam-air mixtures subjected to dropwise condensation. Wärme- und Stoffübertragung 22, 345–346 (1988). https://doi.org/10.1007/BF01387890
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01387890