Numerical Modelling and Experimental Validation of Novel Para Winglet Tape for Heat Transfer Enhancement

Thejaraju Rajashekaraiah, Girisha Kanuvanahalli Bettaiah, Parvathy Rajendran (), Mohamed Abbas, Sher Afghan Khan and C. Ahamed Saleel
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Thejaraju Rajashekaraiah: Department of Mechanical Engineering, Visvesvaraya Technological University, Belgaum 590018, Karnataka, India
Girisha Kanuvanahalli Bettaiah: Department of Mechanical Engineering, BGSIT-Adichunchanagiri University BG Nagara, Javarana Hally 571448, Karnataka, India
Parvathy Rajendran: School of Aerospace Engineering, Universiti Sains Malaysia, Engineering Campus, Nibong Tebal 14300, Pulau Pinang, Malaysia
Mohamed Abbas: Electrical Engineering Department, College of Engineering, King Khalid University, Abha 61421, Saudi Arabia
Sher Afghan Khan: Department of Mechanical Engineering, Faculty of Engineering, International Islamic University, Kuala 44000, Lumpur, Malaysia
C. Ahamed Saleel: Department of Mechanical Engineering, College of Engineering, King Khalid University, P.O. Box 394, Abha 61421, Saudi Arabia

Mathematics, 2022, vol. 10, issue 16, 1-19

Abstract: Heat exchangers are predominantly used in the industries of production, manufacturing, power, oil and gas, petroleum, and cooling solutions. The competence of the heat exchanger is optimized through active and passive augmented techniques. The current study revolves around the performance evaluation of Novel Para winglet tape for flow and friction characteristics. Turbulence flow properties from Re of 30,000-to-6000 were explored for three different inclinations and pitches, respectively. Experimental and numerical solutions are derived to showcase the flow behavior over Para winglet tape inserts in the double pipe heat exchanger. Appreciable results were obtained in enhancing the Nusselt number (Nu p ) for a better heat transfer enforcement through the DEX. All case studies also increased when compared to the smooth pipe. Experimentally, the maximum Nu and Nusselt number ratio was observed to be 398.23 and 5.05 times over the plain tube. Similarly, the maximum friction factor and its ratio were observed to be near 0.33 and 8.89 times over the plain tube. Finally, the maximum POI of 2.68 to 2.37 was achieved with 20° inclinations. The experimental and numerical outcomes of Para winglet tape with the higher inclination and shorter pitch were found to be best out of the others.

Keywords: heat exchangers; performance evaluation; experimental; numerical (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2022
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