Optimization of Concentric Pipe Heat Exchanger as Per Asme Code using Finite Element Analysis

Abstract

The dissertation work describes the optimization & FEA of concentric pipe heat exchanger. It is proposed to study the abnormal behaviourof concentric pipe heat exchanger when hot & cold fluids are passed through pipes. The concentric pipe heat exchanger using material SA 516 Grade 70 which is discussed in this report has covered making the (thickness) optimization of inner pipe, tubesheets, and nozzlesas per ASME Code in order to reduce induced von-mises stress & deflection in the concentric pipe heat exchanger. Deflection & Von-mises stress inducedin concentric pipe heat exchangerat different stagesanalyzed in ANSYS 15.0. UHX 14 Case is solved with hot fluid 250? C & cold fluid 100? C are passed through pipe to know behaviour of heat exchanger in terms of von-mises stress & deformation. Finally at different temperature the behaviour of heat exchanger is analyzed & compared ANSYS results with experimental results for validation. It is observed that there is good agreement between ANSYS & experimental results.