Flow-Induced Noise and Vibration Due to von Karman Streets in Tube-Bank Ducts of Gas Air Heat Exchangers

열공급 보일러 배가스 열교환기 덕트에서 발생하는 과도 소음 현상

When a flow passes a series of parallel ones, vortexes will be formed in the wake after the cylinder. This paper treats the problems of vibration and noise in tube bank of gas flow duct of heat exchanger thermal suppling boiler in combine cycle thermal power plants. The boiler burner type has recently been changed to low Nox burner and begun commercial operation. After more load up operation then 70%, high level noise and vibration were generated at gas flow duct of heat exchanger.