Experimental Investigation to Enhance the Heat Transfer in Heat Exchanger by Made Groove in Outer Surface of the Inner Tube
Abstract
This study deals with experimental work implementing to recover the benefit by changing the shape of the tube in heat exchanger (HE) and improving the heat transfer using water as the working fluid. The experimental tests were carried out in build and design a complete test system for counter flow heat exchanger. The tested system consisting of a copper tube with (1m) length (17.05) mm inner diameter (19.05) mm outer diameter, fixed concentric within the outer tube was made of a material PVC. With an “inner diameter (ID) (43 mm) and outer diameter (OD) (50 mm)” isolated from the outside by using insulating material to reduce heat loss. The modify tube was manufacture containing transverse grooves with the depth equivalent to the half thickness of the copper tube. The distance between the grooves on the outer surface of the copper tube is take as a ratio between (0.5, 1) from the outer tube diameter. The laboratory experiment use the hot water at a flow rate ranging between (1-5) LPM, passes in the inner copper tube. As well as the cooling water with the mass flow rate ranging between (3-7) LPM. Three temperatures were the hot fluid are the adoption of (40, 50 and 60) oC and (25) oC the cold fluid. The experiment result showed that the improvement for temperature difference ranging from (14.94 % to 43.2 %) for both corrugated tubes with respect to smooth tube.
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References
2. Kevin M. Lunsford, “Increasing Heat Exchanger Performance”, Bryan Research and Engineering, Inc. – Technical Papers, Bryan, Texas, 1998.
3. B. Chandra Sekhar, D. Krishnaiah, F. Anand Raju, “Thermal Analysis of Multi Tube Pass Shell and Tube Heat Exchanger”, International Journal of Innovative Research in Science, Engineering and Technology, vol. 3, Issue 11, November 2014, Pages 17605-17612.
4. K. Boomsma, D. Poulikakos, F. Zwick, “ Metal foams as compact high performance heat exchangers”, Mechanics of Materials, Vol. 35, Issue 12, December 2003, Pages 1161–1176.
5. N. Sahiti, F. Durst, A. Dewan, “Heat transfer enhancement by pin elements”, IJHMT, vol. 48, Issues 23–24, November 2005, Pages 4738–4747.
6. Simin Wang, Jian Wen, Yanzhong Li, “An experimental investigation of heat transfer enhancement for a shell and tube heat exchanger”, Applied Thermal Engineering, Vol. 29, Issues 11–12, August 2009, Pages 2433–2438.
7. Chinaruk Thianponga, Petpices Eiamsa-arda, Khwanchit Wongchareeb, Smith Eiamsa-ardc, “ Compound heat transfer enhancement of a dimpled tube with a twisted tape swirl generator”, International Communications in Heat and Mass Transfer, Vol. 36, Issue 7, August 2009, Pages 698–704.
8. Qasim J. M. Slaiman, Abbas N. Znad, “Enhancement of Heat Transfer in The Tube-Sid of A Double Pipe Heat Exchanger by Wire Coils”, Nahrain University, College of Engineering Journal (NUCEJ), Vol.16, No.1, 2013, pp.51-57.
9. Yunus A. Cengel, “heat transfer”, 2nd edition by Mc Graw Hill International Edition companies, 2003.
10. Ramesh K. Shah, Dušan P. Sekulič, “Fundamentals of Heat Exchanger Design”, Jon Wiley & Sons, 2003.
11. J. P. Hollman, “ Heat Transfer”, Department of Mechanical Engineering, Southern Methodist University, 10th edition by Mc Graw. Hill International Edition companies, 2010.
