By using the CFD software

numerical model of a small scale shell-and-tube heat exchanger was established

and the influence of inclined angle(0°

5°

10°

15°

30° and 45°) of the baffle on internal flow field and heat transfer effect of the heat exchanger was studied. The results show that

the temperature rise rate and the total heat transfer rate are affected by the inclination angle of the baffle at different inlet flow velocities(0.1

0.2

0.3

0.4 and 0.5 m/s). The pressure drop decreases with the increase of the inclination angle at different inlet flow velocities. A smaller pressure drop rate

a larger temperature rise rate

and a larger total heat transfer rate could be obtained when the inclination angle is 5°.