Effect of holes placed on the perforated finned heat exchanger at different angles on the Nusselt and Reynolds numbers

Saad, Muhammad

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dc.contributor.author	Saad, Muhammad
dc.date.accessioned	2021-10-07T04:57:07Z
dc.date.available	2021-10-07T04:57:07Z
dc.date.issued	2017-11-15
dc.identifier.citation	 Karabacak R (1992). The effects of fin parameters on the radiation and free convection heat transfer from a finned horizontal cylindrical heater. Energy Conversion Manage.., 33: 997-1005.  Karabacak R (1996). Experimental relationships for heat flux, Nusselts number and temperature difference in a finned heater. Energ. Conversion and Manage., 37: 591-597.  Kayansayan N (1993). Thermal characteristics of fin – and – tube heat exchanger cooled by natural convection. Exp.erimental Thermal and Fluid Science. 7: 177-188.  Leu JS, Liu MS, Liaw JS, Wang CC (2001). A numerical investigation of louvered fin and tube heat exchangers having circular and oval tube configurations. Int.ernational J.ournal of Heat and Mass Transfer. 44: 4235-4243.  Souidi N, Bontemps A (2001). Countercurrent gas – liquid flow in plate – fin heat exchangers with plain and perforated fins. Int.ernational J.al of Heat and Fluid Flow. 22: 450-459.  Wang CC, Hwang YM, Lin YT (2001). Empirical correlations for heat transfer and flow friction characteristic of harringbone wavy fin and tube heat exchangers. Int. J. Refrigeration. 25: 673-680.  Wierzbowski M, Stasiek J (2002). Liquid crystal technique application for heat transfer investigation in a fin – tube heat exchanger element. Exp. Thermal and Fluid Sci., 26: 319-323.  Xiao Q, Tao WQ (1990). Effect of fin spacing on heat transfer and pressure drop of two – row corrugated – fin and tube heat exchangers. Int. Commun. Heat Mass Transfer. 17: 577-586.  Yakar G (2007). The effect of turbulence created in fin-tube type heat exchangers with perforated fin on heat transfer and pressure drop. PhD dissertation, Pamukkale University, Denizli, Turkey.  Yakut K, Sahin B (2004). Flow – induced vibration analysis of conical rings Used for heat transfer enhancement in heat exchangers. Appl. Energy. 78: 273-288.  Yan WM, Sheen PJ (2000). Heat transfer and friction characteristics of fin – and – tube heat exchangers. Heat Mass Transfer. 43: 1651- 1659	en_US
dc.identifier.uri	http://hdl.handle.net/123456789/1113
dc.description	Supervised by Dr. Arafat Ahmed, Department of Mechanical and Chemical Engineering (MCE), Islamic University of Technology (IUT), Board Bazar, Gazipur-1704, Bangladesh.	en_US
dc.description.abstract	In this research, 6mm diameter holes were opened on each circular fin on a heating tube in order to increase convective heat transfer. This is different from the other studies in the literature. These holes were placed on the circular fin in such a way as to follow each other at the same chosen angle. The holes created turbulence in a region near the heating tube surface on the bottom of the fin. Experiment were performed to analyze the effect of this turbulence on heat transfer and pressure drop. These experiment were performed at six different angular position in order to determine the best angular positioning. In addition, a perforated finned heater was compared with an imperforated finned heater to observe the differences. When Nud values were considered for the same airflow rate and the same Red, the Nud value of the heater with holes was found to be 2.43% higher than the Nud value of the heater without holes. However, there was a 3.84% decrease in pressure.	en_US
dc.language.iso	en	en_US
dc.publisher	Department of Mechanical and Production Engineering (MPE),Islamic University of Technology(IUT), Board Bazar, Gazipur, Bangladesh	en_US
dc.subject	Heat exchanger, heat transfer, convection	en_US
dc.title	Effect of holes placed on the perforated finned heat exchanger at different angles on the Nusselt and Reynolds numbers	en_US
dc.type	Thesis	en_US