Experimental and Numerical Investigation to Evaluate the Performance of U-Longitudinal Finned Tube Heat Exchanger | ||
| Journal of Engineering and Sustainable Development | ||
| Article 1, Volume 18, Issue 5, October 2014, Pages 1-20 | ||
| Authors | ||
| Firas Abd ali Abbas; Sahar Abdul Fattah; Qasim Saleh Mahdi | ||
| Abstract | ||
| Experimental and numerical investigation has been performed in this work to evaluate the performance for U-longitudinal finned tube heat exchanger. Four pairs of U-shaped longitudinal fins were selected and manufactured from copper material and welded on the straight copper tube. The inner tube is inserted inside insulated galvanized tube, sheet and roll insulation (arm flux) and glass wool have been utilized to cover inner and outer surface of galvanized tube for reducing heat losses. Air at various mass flow rates (0.03 to 0.07)kg/sec flows through annuli and de-ionized water at Reynold's numbers ranging from (270 to 1900) flows through the inner tube. Performance of (smooth and finned) tube heat exchanger was investigated experimentally. Experimental results showed (1.744 to 2.534) enhancement ratio when using U-longitudinal fins. Empirical correlations for air, water were represented by Nusselt's number. Numerical simulation has been carried out on present heat exchanger to analyze flow field and heat transfer using FLUENT package 14. The comparison between experimental work and numerical results showed good agreement. | ||
| Keywords | ||
| heat exchanger; finned tube; ANSYS FLUENT | ||
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