Published Paper Details:

Tubesheet of the Shell and tube heat exchangers designed as per part UHX of ASME Pressure vessels codes. In the past, the tubesheet was designed by this analytical method irrespective of tube layout. However this analytical method does not holds good for NTIW type Tube layout. This research work presents design and analysis of NTIW tubesheet shell and tube type heat exchanger using ASME code formula, TEMA Standards and FEA analysis. After completion of design calculation and stress results by analysis, the stresses at various location on tubesheet i.e. at perforated and non-perforated region has been evaluated. In this research, design has been carried out in PV Elite 2017 software. Design data and other important things were provided by the external guide as per requirement. Design has been carried out as per ASME Section viii, Div.1, UHX-13 and according to TEMA Standard. After completion of design, analytical calculation of NTIW tubesheet was performed in PV Elite software and then after the analytical design report for NTIW tubesheet was generated. After design and analytical calculation, FEA analysis has been carried out in Ansys. For analysis, to overcome the higher hardware requirements of computer as the numbers of tubes are 6992, the criteria of equivalent perforated material given in ASME Section VIII, Div.2, part 5, Annexure 5E utilized for analysis. So in this research we have compare different stresses at different location of perforated and non-perforated regions using FEA analysis. So after studying the the results, it is observed that the stress induced in analysis are higher and deformation is also higher. So it can be concluded from the comparison of the results that the analytical method does not provide the reliable design of tubesheet as per UHX. Hence, the tubesheet thickness can be increased and the stress for same design condition shall be evaluated.