| Title |
The Analysis of Fluid Pressure in Polybutylene Piping System |
| Keywords |
Water hammer ; 수격현상 ; Valve closure ; 밸브폐쇄 ; Pressure wave propagation speed ; 압력파 전파속도 ; Pressure rise ; 압력상승 ; Polybutylene pipe ; 폴리부틸렌관 |
| Abstract |
This study is to investigate the pressure wave characteristics and the maxi-mum pressure rise generated by instantaneous valve closure at the end of the straightening polybutylene piping system. Experiments were conducted under the following conditions: initial pressure 1∼5bar, flow velocity 0.5∼3.0m/s and water temperature 25℃. Results indicated that the peak pressure generated by quick valve closure reached Joukowsky's value. We also found that the maximum pressure rise and the pressure history depended on not only initial steady pressure but also flow velocity. |