Wake frequency calculation of Thermowells for Heat Exchanger Shell and Tube side nozzles are required or not. In practice we do not undertake these calculations. I am not having suitable reasons for this. The nozzle is designed keeping in mind vibration associated with velocity of the flluid, then why we don't undertake vibration calculations for Thermowells. Can any one help me clarify this?
It all depends on the conditions. If the velocity is less than 0.64m/s [2.1ft/sec] then a calculation - according to the ASME 19.3 standard - is not required. I have never heard, or come across a WFC for a heat exchanger, but there's always a first time.