Study on velocity profiles around spiral baffle plates in a horizontal circular tube without inner tubes Chang, Tae-Hyun; Lee, Kwon-Soo; Choi, Yoon-Hwan; Lee, Yeon-Won;
Usually shell and tube heat exchangers are employed to recover energy between fluids. Recently, numerous papers on these heat exchangers have been published; however, the velocity and temperature profiles or comparison of the features of the flow with or without inside tubes have rarely been described. In this research, experimental and numerical studies were carried out to investigate the characteristics of the flow around the spiral baffle plates without inside tubes in a horizontal circular tube using a particle image velocimetry method and ANSYS 14.0~15.0 version (Fluent). The results showed that swirling flow was produced between the spiral baffle plates. The tangential components were strong between the two spiral baffles; however, the axial or radial velocities components were indicating nearly zero. From the spiral motion in the space of the two baffles, it is considered that there were no dead zones between the spiral baffle.
Spiral baffle plate;Particle image velocimetry;Swirling flow;Shell and tube heat exchanger;
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