Determination of convective heat transfer for fenestration with between-the-glass louvered shades
Abstract
In previous work, a two-dimensional steady laminar natural convection model of a window cavity with between-panes louvers (i.e., slats) was developed by approximating the system as a vertical cavity with isothermal walls at different temperatures, and with rotatable baffles located midway between the walls. The baffles were set to a third temperature so that night-time and day-time conditions, and the effects of low emissivity coatings (low-e), could be considered. It was found that the system is suited to a traditional one-dimensional analysis. A novel approach that allows the use of standard vertical cavity convection correlations and a modified cavity half-width is described, and a cavity modification factor, n∗, is presented. Finally, the n∗ factor and vertical cavity convection correlation are joined with a longwave radiant model, and the results are compared to experimental results. The models show good agreement with experiments.
Cite this version of the work
Michael R. Collins, Syeda Humaira Tasnim, John L. Wright
(2008).
Determination of convective heat transfer for fenestration with between-the-glass louvered shades. UWSpace.
http://hdl.handle.net/10012/11637
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