A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Experimental study of free convection in a window with a heated between-panes blind
Highlights • Experimental study of free convection in a between pane blind was performed. • Model included effect of solar radiation by using electrical heaters. • Full temperature field measurements were obtained using laser interferometry. • At widest glazing spacing, temperature field was unsteady, indicating turbulent flow. • Results were compared with a simplified model from the literature.
Abstract An experimental study has been conducted to examine free convection in a window with an enclosed aluminum venetian-type blind. The unique feature of this experiment was that the blind slats were heated electrically to simulate absorbed solar radiation. Convective heat transfer measurements and temperature field visualization were obtained using a Mach–Zehnder laser interferometer. Optical measurements were made for two glazing spacings, two blind slat angles, two blind heat flux levels, and two glazing temperature differences. Both local and average convective heat flux data were obtained in the center region of the tall air-filled enclosure. At the widest glazing spacing, the temperature field was found to be unsteady. For these cases, the temporal fluctuation of the local convective heat transfer was time-averaged using a high speed camera. The experimental results have been compared to a simplified method in the literature for predicting the center-glass heat flux for this configuration.
Experimental study of free convection in a window with a heated between-panes blind
Highlights • Experimental study of free convection in a between pane blind was performed. • Model included effect of solar radiation by using electrical heaters. • Full temperature field measurements were obtained using laser interferometry. • At widest glazing spacing, temperature field was unsteady, indicating turbulent flow. • Results were compared with a simplified model from the literature.
Abstract An experimental study has been conducted to examine free convection in a window with an enclosed aluminum venetian-type blind. The unique feature of this experiment was that the blind slats were heated electrically to simulate absorbed solar radiation. Convective heat transfer measurements and temperature field visualization were obtained using a Mach–Zehnder laser interferometer. Optical measurements were made for two glazing spacings, two blind slat angles, two blind heat flux levels, and two glazing temperature differences. Both local and average convective heat flux data were obtained in the center region of the tall air-filled enclosure. At the widest glazing spacing, the temperature field was found to be unsteady. For these cases, the temporal fluctuation of the local convective heat transfer was time-averaged using a high speed camera. The experimental results have been compared to a simplified method in the literature for predicting the center-glass heat flux for this configuration.
Experimental study of free convection in a window with a heated between-panes blind
Almeida, F. (author) / Naylor, D. (author)
Energy and Buildings ; 43 ; 2647-2655
2011-06-12
9 pages
Article (Journal)
Electronic Resource
English
Experimental study of free convection in a window with a heated between-panes blind
| Online Contents | 2011
Elsevier | 1989
LOCKING DEVICE FOR WINDOW BLIND BETWEEN TWO PANES OF GLASS
| European Patent Office | 2017
Sealed magnetic-controlled window blind between two panes of glass
| European Patent Office | 2016