Abstract: The patented novel shell-and-tube heat exchanger with splitter-and-hole diaphragms was designed to enhance heat transfer in the shell-side, whose performance was experimentally examined in the present paper. Compared with the conventional baffle exchangers, it lowers the total shell-side pressure drop to 45% and the pressure drop over the tube bundle to 84%; meanwhile, it gives heat transfer coefficients of 14% higher than the bafflebundle, and 25% higher than the contracted-expanded-tube bundle of type (II), and 88.6% higher than the ROD baffle bundle at the condition of Re = 104. The exchanger with splitter-and-hole diaphragms is shown to be superior to the others in terms of the generalized performance evaluation criteria, such as characteristic ratio of heat transfer, jH factor, convective heat transfer coefficients underlined by equal friction work, and the surface efficiency.

摘要： 对强化壳方传热的新技术——刺孔膜片式管束做了实验考核,与传统的弓形折流板管束相比,壳方总压降减小了45%,管束在降减小约84%.而在R_e=10~4时壳方传热系数却提高了14%,比相同条件下缩放管(Ⅱ)型管束高25%,比折流杆管束高88.6%.对比相同摩擦功条件下对流传热系数以及表面效率等综合性能评价指标,显示出刺孔膜片式换热器性能优良.