Vibration of high-efficiency heat exchangers
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Hello everyone. High-efficiency heat exchangers are often used in modern designs. These devices feature small tube diameters on the equipment side and larger tube diameters on the pipeline side, which results in good heat exchange efficiency; however, this process is quite intense and often causes vibrations throughout the entire structure. I would like to ask for your advice on this issue – are there any solutions or approaches that can be adopted? At present, it can only be addressed by adding supports, but the effect is not significant. Due to stress issues, it cannot be connected directly. The more turns there are, the more noticeable the vibration.
It is usually a shock absorber pad, or a shock absorber
Heat exchange equipment that relies solely on increasing flow rates to achieve high heat transfer performance incurs significant pressure drop and energy consumption losses. Moreover, vibration poses a threat to the equipment’s service life and can lead to accidents. The root cause of the problem described by the original poster lies in design flaws in the heat exchanger itself; relying on external shock absorption measures is only a temporary solution. To address the issue properly, it is necessary to examine whether there are any problems with the original equipment based on the actual process parameters in use. For the sake of safe operation and energy savings, it is recommended to consider replacing the equipment.
One method to reduce vibration is to use dampers, namely support-layered dampers installed at both ends of the high-efficiency heat exchanger; these dampers can change the resonance characteristics to a non-polar form, thereby **reducing the amplitude of vibrations**. Additionally, flexible guide vanes can be considered; they can effectively reduce the impact of the fluid on the pipes, thereby minimizing vibrations. It is also possible to consider using multi-stage step fans, with variable speed to reduce the pressure difference and minimize shocks.