Effect of shell on performance of heat exchanger with trefoil-hole baffle

The periodic whole cross-section model and the unit duct were established, differences between two models discussed. effects of shell wall baffle edges on side performance heat exchanger with trefoil-hole investigated using both models. Thermodynamics in transfer coefficient each tube different position It is found that disparities results numerical decreases increase inner diameter. When diameter 0.8 m, disparity less than 10%, which means baffles become weaker. modified correlations for are introduced to quantitatively reveal thermodynamics variations spacing. fluid-flow velocities at specific locations measured a laser doppler velocimeter system. accuracy simulation method was verified by experimental results.