Exergetic performance analysis of concentric tube heat exchanger with V-cut twisted tape inserts and Al 2 O 3 +MWCNT nanofluid

摘要

This study investigates the performance of Al_(2)O_(3)+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.