Free-Convection Condensation of Ammonia/Water Vapour Mixtures on a Horizontal Smooth Tube

Autor:	Mitsuo Kojima, Masao Goto, Tetsu Fujii, Takao Kashiwagi, Shigeru Koyama
Rok vydání:	1995
Předmět:	Natural convection Materials science Turbulence Mechanical Engineering Condensation Thermodynamics Heat transfer coefficient Condensed Matter Physics Ammonia chemistry.chemical_compound chemistry Heat transfer Mass fraction Physics::Atmospheric and Oceanic Physics Water vapor
Zdroj:	TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B. 61:231-238
ISSN:	1884-8346 0387-5016
DOI:	10.1299/kikaib.61.231
Popis:	The heat tranfer characteristics of free-convection condensation of ammonia/water vapour mixtures on a horizontal tube are investigated. The heat transfer coefficients of ammonia/water vapour mixture are predicted by solving the algebraic equations, and the results show that the heat transfer coefficients of the mixtures are lower than those of the pure components, ammonia and water. Experiments are also performed to investigate the condensation behaviour of the vapour mixture on a horizontal smooth tube over a wide range of mass fraction of each component. The results indicate that the experimental heat transfer coefficients agree well with the theoretically predicted values. Observation of the condensate film reveals the appearance of three types of film, namely, smooth film, stationary ringwise film, and turbulent ringwise film.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::51b84e2cdb135911e172435a2103b961 https://doi.org/10.1299/kikaib.61.231 Zobrazit plný text záznamu