Experimental Investigation on Convective Heat Transfer Analysis in a Circular Tube with Internal Threads of Different Pitches
Pradip Ramdas Bodade1, Dinesh Kumar Koli2
1Pradip Ramdas Bodade, Anna University, Chennai, (Tamil Nadu), India.
2Dinesh Kumar Koli, Anna University, Chennai, (Tamil Nadu), India.
Manuscript received on September 20, 2013. | Revised Manuscript received on October 05, 2013. | Manuscript published on October 30, 2013. | PP: 280-284 | Volume-3, Issue-1, October 2013. | Retrieval Number: A2256103113/2013©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The present work focus on Experimental investigation of heat transfer and friction factor characteristics of horizontal circular pipe using internal threads of pitch 1 cm and 0.5cm with air as the working fluid. The flow regime is selected for this study with the Reynolds number range 17,000 to 30,000. The horizontal aluminum pipe was subjected to constant and uniform heat flux. The experimental data obtained were compared with those obtained from plain Horizontal pipe. The effects of internal threads of varying pitch on heat transfer and friction factor were presented. Based on the same pumping power consumption, the pipe with internal threads possesses the highest performance factors for turbulent flow. The heat transfer coefficient enhancement for internal threads is higher than that for plain pipe for a given Reynolds number. The use of internal threads improved the performance of horizontal circular pipe.
Keywords: Enhancement, Internal threads, Heat transfer and turbulent flow.