decrease forcing frequencies (decrease crossflow velocity) Decrease crossflow velocity (use multi-segmental baffles, different shell type etc) And Tube Heat Exchanger Design Service HTRI Heat Exchanger Designing Service. Increase tube natural frequency (decrease unsupported tube span, increase tube OD/thickness etc) Vessel Jacket Head FEA Analysis Service Finite Element Analysis Service. Increase damping of tubes (increase baffle thickness, decrease tube-baffle hole clearence etc) Generally vibration troubleshooting is handled by concentrating on following: To take care of shellside DP, increase baffle cut, increase tube pitch with corresponding increase in shell ID to have same number of tubes (subject to limitation of shell ID in your plant)
HTRI SOFTWARE DIMPLED JACKET SERIES
In NTIW design, you can increase baffle spacing to limit pressure drop but add support plates to increase natural frequency of tubesĢ) Try 2 E shells in series with NTIW designģ) In your design, decrease baffle spacing to TEMA levels. HTRI’s calculation methods are backed by 50 years of extensive research and data collected on industrially relevant heat transfer equipment. I would use following options:ġ) Check if NTIW design is possible in F shell. HTRI Xchanger Suite, from the global leader in process heat transfer and heat exchanger technology, includes components for heat transfer and associated calculations of heat exchangers and fired heaters.
However, you are using F shell and U tubes to counter temperature cross. Have vessel with an external ASME Section VIII Appendix 17 designed ss dimpled jacket assembly which is showing all the classic signs of age (30 yrs) with fatigue cracks developing at the toe of the condensate outlet nozzle, around some of the plug welds and at the jacket boundary welds.
HTRI SOFTWARE DIMPLED JACKET PC
Single Segmental baffles, increased pitch ratio Popular Antivirus Software Kaspersky Antivirus - PC Best PC Multidevice Monthly Cost: 59.99 Up View Plans Bitdefender Antivirus - PC Best PC Antivirus 2020 Monthly Cost: 39.99 Up View Plans Webroot Antivirus - PC Best for PC Webcams Monthly Cost: 39. Single Segmental baffles, different combinations However, you can not decrease baffle spacing as you are already constrained by shellside pressure drop.įor E shells we proceed in following hierarchy: Your main problem for vibration is due to large central spacing and hence lower natural frequency.