Exergetic performance analysis of concentric tube heat exchanger with V-cut twisted tape inserts and Al₂O₃+MWCNT nanofluid
by Sumit Kumar Singh; Mayaram Sahu; Weon Gyu Shin
International Journal of Exergy (IJEX), Vol. 42, No. 1, 2023

Abstract: This study investigates the performance of Al₂O₃+MWCNT hybrid nanofluid of volume concentration of 0.01% in concentric tube heat exchangers using V-cut twisted tape inserts. The effect of various flow rates (5-25 lpm) and geometric parameters (V-cut depth ratio, V-cut width ratio, and Twist ratio) on exergetic performance parameters were analysed. Results revealed that exergy and irreversibility rate increase with twist and depth ratios while decreasing with width ratio. Second law efficiency increases with twist and width ratios but declined with the depth ratio. Altering the V-cut inserts affects thermal and frictional entropy generation. These findings can optimise heat exchanger design for industrial applications.

Online publication date: Tue, 17-Oct-2023

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