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Keywords: humidity
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Journal Articles
Article Type: Research Papers
J. Heat Transfer. September 2011, 133(9): 092001.
Published Online: July 27, 2011
... ( 1 - X s ) where the equivalent mass transfer coefficient on the basis of humidity difference 14 k inner e = ρ s ρ a k inner H p where ω s is the equilibrium humidity with solution at a given liquid temperature and concentration...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. May 2009, 131(5): 052001.
Published Online: March 18, 2009
... within 5% of a more complicated parallel-flow model currently available in literature. The model was also in good agreement with existing experimental data for a counterflow absorber. 05 12 2007 13 11 2008 18 03 2009 differential equations film flow heat transfer humidity...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. January 2009, 131(1): 011502.
Published Online: October 21, 2008
.... An example of this case is the flow of humid air, in which air is present in high concentration. Vapor condenses at the dew point temperature corresponding to mass fraction of vapor in the gas-vapor mixture and the total pressure. The rate of condensation is controlled by the diffusion of the vapor through...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. December 2007, 129(12): 1627–1637.
Published Online: April 1, 2007
...V. Dharma Rao; V. Murali Krishna; K. V. Sharma; P. K. Sarma The problem of condensation of water vapor from humid air flowing in a duct in turbulent flow is formulated theoretically. Vapor condensing at the dew-point temperature of the vapor-air mixture diffuses to the wall of the duct through...
Journal Articles
Article Type: Technical Papers
J. Heat Transfer. September 2007, 129(9): 1256–1267.
Published Online: December 2, 2006
..., it is found that the heat transfer and mass transfer characteristics are insensitive to changes in fin spacing. The influence of the inlet relative humidity on the heat transfer characteristic is rather small. For one and two row configurations, a considerable increase of the mass transfer characteristic...
Journal Articles
Article Type: Technical Papers
J. Heat Transfer. February 2003, 125(1): 95–102.
Published Online: January 29, 2003
... humidity of air ( V , T a , and ϕ) are studied, and the surface temperature of the cold plate T w is also varied. The considered ranges of these dominant variables are: 2 ⩽ V ⩽ 13 m/s, 20 ⩽ T a ⩽ 35 ° C , 40 percent ⩽ϕ⩽80 percent, and − 13 ⩽ T w ⩽ − 2 ° C . The theoretical model presented by Cheng...
Journal Articles
Article Type: Technical Papers
J. Heat Transfer. December 2002, 124(6): 1001–1008.
Published Online: December 3, 2002
..., without enhanced vapor diffusion. The model simplifies the variation of the relative humidity, from dryness to the field capacity, with a linear increase. The predicted results, compared to experimental data, show the agreement is very good at the temperatures in the range (30–50°C) and acceptable at 70°C...
Journal Articles
Article Type: Technical Papers
J. Heat Transfer. December 2002, 124(6): 1182–1191.
Published Online: December 3, 2002
...P. J. Mago; Dr. S. A. Sherif Whenever humid air comes in contact with a cooling coil whose temperature is below both the dew-point of water vapor in air and the freezing point, frost will form. The nature of the frost forming on the coil will depend to a large measure on the psychrometric...
Journal Articles
Article Type: Technical Papers
J. Heat Transfer. October 2001, 123(5): 827–836.
Published Online: April 2, 2001
... of relative humidity on the fully wet fin efficiency is also small. For partially wet surface, a considerable influence of the relative humidity on the fin efficiency is encountered. Test results for the fully wet fin efficiency agree well with some of the previous studies but disagree with some...
Journal Articles
Article Type: Technical Papers
J. Heat Transfer. November 2000, 122(4): 808–816.
Published Online: May 9, 2000
... the film. The thermal conductivity measurements are sensitive to many other factors such as the thermal contact resistances, anisotropic material properties, surrounding air currents and temperature, and ambient humidity. A comprehensive numerical model was also developed to simulate the heat transfer...