• S ADITHYA
• SHANKARAGOUD BIRADAR
• VIJAYKUMAR PATIL
• NAGARJUN R
• Dr. RAMAKRISHNA N HEGDE

: The heat exchangers are used to enhance heat transfer by providing high heat fluxes or heat transfer coefficient.Techniques have been investigated on enhancement of heat transfer rate and decrease in the size and cost of the involving equipment, especially heat exchangers. This project mainly focuses on the numerical analysis of metallic inserts viz., propeller turbulator insert along with nano fluid in a double pipe heat exchanger. The metallic inserts help in increasing the Reynolds number to an optimum value by converting the flow from laminar to partially turbulent nature. The nano fluid due to their particle size can help in absorbing or emitting the heat more effectively than the fluids of size in microns. There are various types of metallic inserts, but the main focus is on a combination of propeller type turbulators and Alumina oxide nano fluid for the purpose of analysis. The numerical outcomes are validated with experimental values. The deviation was found to be within permissible limits, and hence establishing the authenticity of the investigation. The present work aims to investigate heat transfer augmentation using a combination of propeller type metallic turbulators (with 6 number turbulator) and volume concentrations 0.05% of Alumina Oxide nanofluid, for Reynolds number ranging from 500 to 5000. Numerical investigation reveals significant rise in heat transfer to the extent of 34.514% using propeller turbulators fitted with six propellers in 0.05% by volume of Nanofliud. ____________________________________________________

"NUMERICAL INVESTIGATION ON HEAT TRANSFER AUGMENTATION USING ALUMINA NANO FLUID AND METALLIC INSERTS IN DOUBLE PIPE HEAT EXCHANGER", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.265-269, June-2019, Available :http://www.jetir.org/papers/JETIR1906A44.pdf

"NUMERICAL INVESTIGATION ON HEAT TRANSFER AUGMENTATION USING ALUMINA NANO FLUID AND METALLIC INSERTS IN DOUBLE PIPE HEAT EXCHANGER", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp265-269, June-2019, Available at : http://www.jetir.org/papers/JETIR1906A44.pdf