Numerical Study of the Enhancement of Flow Uniformity in a Tray Dryer Chamber
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The flow field inside a large-capacity air tray dryer chamber was examined by computational fluid dynamics. Thenumerical results for the original chamber showed that the velocity distribution is significantly inhomogeneous, and the products arenot expected to be dried uniformly. Guide vanes were installed in the drying chamber to reduce the low-velocity region and increasethe spatial homogeneity of the velocity above the product. The numerical simulations showed that the flow uniformity is increasedsignificantly by modification of the flow field owing to these guide vanes. In addition, the attachment of a solid plate to the bottom ofthe upper trays can enhance the uniformity of the flow further. Finally, the effects of the permeability of trays on the flow field werealso examined.
Abstract
The flow field inside a large-capacity air tray dryer chamber was examined by computational fluid dynamics. Thenumerical results for the original chamber showed that the velocity distribution is significantly inhomogeneous, and the products arenot expected to be dried uniformly. Guide vanes were installed in the drying chamber to reduce the low-velocity region and increasethe spatial homogeneity of the velocity above the product. The numerical simulations showed that the flow uniformity is increasedsignificantly by modification of the flow field owing to these guide vanes. In addition, the attachment of a solid plate to the bottom ofthe upper trays can enhance the uniformity of the flow further. Finally, the effects of the permeability of trays on the flow field werealso examined.
참고문헌 (9)
- 엄용균, "상자식 농수산물 건조기의 열풍 균일분배구조 실현을 위한 유동해석", 설비공학 논문집, 18(1), pp.7~16 (2006), 대한설비공학회
- Norton, T., "Computational fluid dynamics (CFD)–an effective and efficient design and analysis tool for the food industry: a review", Trends in Food Science & Technology, 17, pp.600~620 (2006)
- Scott, G., "The application of computational fluid dynamics in the food industry", Trends in Food Science & Technology, 8, pp.119~124 (1997)
- Xia, B., "Applications of computational fluid dynamics (CFD) in the food industry: a review", Computers and electronics in agriculture, 34, pp.5~24 (2002)
- Mirade, P. -S., "Prediction of the air velocity field in modern meat dryers using unsteady computational fluid dynamics (CFD) models", Journal of Food Engineering, 60, pp.41~48 (2003)
- Margaris, D. P., "Dried product quality improvement by air flow manipulation in tray dryers", Journal of Food Engineering, 75, pp.542~550 (2006)
- Mathioulakis, E., "Simulation of air movement in a dryer by computa tional fluid dynamics: application for the drying of fruits", Journal of Food Engineering, 36, pp.183~200 (1998)
- Amanlou, Y., "Applying CFD for designing a new fruit cabinet dryer", Journal of Food Engineering, 101, pp.8~15 (2010)
- Lefèvrea, F., "A Flat Plate Heat Pipe with Screen Meshes for the Cooling of Electronic Components", 10th International heat pipe symposium, pp.29~34 (2011)