Session: DA-01-01 The Roger F. Reedy Memorial Symposium on Design & Analysis of Pressure Vessels and Components - 1

Paper Number: 106688

106688 - Study on the Calculation Method of Fluid Distributor of Corner-Corner Typed in Heat Exchangers 

The fluid distributor of corner-corner typed (named in ASME) are more and more frequently adopted in large high effective condenser or large efficient heat exchanger because of its advantages of space saving, easy manufacture and high steam flux. But, it is pointed out that high local stresses due to discontinuity at its right angle connection would lead to fracture failure. Meanwhile, the fluid distributor as the element in shell side of heat exchanger, its axial axial stiffness would affect the tubesheets, shell and tube bundle of the fixed-tubesheet heat exchanger based on the mechanical model and theory in ASME code. Unfortunately, there is no scientific and effective solution so far.

In this paper, the structure character and loads of the fluid distributor were described and its risk in design was analyzed. An analytical solution based on elastic shell and plate theory was put forward for the fluid distributor under inner pressure and/or axial forces. The detailed calculation method was presented to resolve the overall strength, local stresses, stress trend curves for each component and its overall axial stiffness. Meanwhile, the method can be programed for effective design. Finally, the method was verified by numerical simulation. The results indicate that the method developed in this paper is valid and accurate enough to resolve the current design problems. It is recommended that the relevant codes should consider the problems described in this paper.

Presenting Author: Guodong Zhu China Special Equipment Inspection and Research Institute

Presenting Author Biography: Guo-Dong Zhu, born in 1974, is currently an associate professor. He received his PhD degree of Power Engineering and Engineering Thermal Physics, Beijing University of Chemical Technology, China. His research interests include analysis of pressure vessels, with emphasis on heat exchangers, for Chinese national code - Heat exchangers and CIWG ASME PVP VIII.
Tel: +86-10-59068951; E-mail: zhugd@sina.com

Authors:

Guodong Zhu China Special Equipment Inspection and Research Institute
Libin Song China Special Equipment Inspection and Research Institute
Yanfeng Zhang Lanpec Technologies Limited (Shanghai)
Tian Xie Beijing Sinohytec Co.,Ltd.