152
Z. Liu et al.
Fig. 12.10 von Mises
distribution under the
maximum pressure on the
plate-side
Fig. 12.11
Load-displacement
relationship when only
shell-side pressure was
applied
12.5 Conclusions
In order to make accurate and effective strength design of plate heat exchangers,
finite element analysis was conducted to evaluate the static strength of a plate
heat exchanger under the different load cases. Two design-by-analysis methods,
namely Elastic Stress Analysis Method and Limit-load Analysis Method were used
to perform stress assessment. Results show that the plate heat exchanger meets the
strength requirements according to ASME VIII-2. It is also found that if applying
Elastic Stress Analysis Method, a lot of SCLs should be specified on components of
the plate heat exchanger and the stresses have to be categorized according to their
effects on the strength failure of the equipment, which significantly complicates the
computation and strength assessment. If applying Limit-load Analysis Method, the
Z. Liu et al.
Fig. 12.10 von Mises
distribution under the
maximum pressure on the
plate-side
Fig. 12.11
Load-displacement
relationship when only
shell-side pressure was
applied
12.5 Conclusions
In order to make accurate and effective strength design of plate heat exchangers,
finite element analysis was conducted to evaluate the static strength of a plate
heat exchanger under the different load cases. Two design-by-analysis methods,
namely Elastic Stress Analysis Method and Limit-load Analysis Method were used
to perform stress assessment. Results show that the plate heat exchanger meets the
strength requirements according to ASME VIII-2. It is also found that if applying
Elastic Stress Analysis Method, a lot of SCLs should be specified on components of
the plate heat exchanger and the stresses have to be categorized according to their
effects on the strength failure of the equipment, which significantly complicates the
computation and strength assessment. If applying Limit-load Analysis Method, the