单弓形和螺旋形折流板换热器的数值模拟及性能分析

SIMULATION AND ANALYSIS OF PERFORMANCE OF SINGLE SEGMENTAL BAFFLES AND HELICAL BAFFLES HEAT EXCHANGER

运用CFD数值模拟方法对比了相同操作参数单弓形折流板换热器和螺旋形折流板换热器的性能,并对不同介质下两种折流板换热器壳程的流动阻力和传热效果进行分析比较。结果表明,螺旋形折流板换热器的传热性能明显优于单弓形折流板换热器,而且壳程压力损失更小。

The Computational Fluid Dynamics （CFD） method has been applied to simulate both shell-side fluid in single segmental baffles and helical baffles heat exchangers under the same operational parameters. The shell-side pressure drop and heat transfer effect of single segmental baffles and helical baffles heat exchangers were analyzed and compared. The results show that the pressure drop raises in both single segmental baffles and helical baffles heat exchangers with the increase of mass flow rate. And the heat transfer performance of helical baffles heat exchangers is much better than that of single segmental baffles heat exchangers, and shell-side pressure drop is much lower.