| Title |
A Numerical Study on the Dynamic Characteristics of Water Hammer Arresters for Building Service Applications |
| Keywords |
Water hammer ; 워터햄머 ; Water supply system ; 급수계통 ; Water hammer arrester ; 워터햄머흡수기 ; Building services ; 건축설비 |
| Abstract |
Dynamic characteristics of water hammer arresters installed in a building water supply system have been investigated numerically by utilizing a commercial code that employs the method of characteristics. Some preliminary results with those arresters produced in this study agree well with the previously reported. Then, the arresters have been incorporated into a water supply pipe system of a 59 m2 apartment unit constructed by a leading construction company, and their dynamic characteristics, especially on the reduction in the water hammer pressure, are investigated. It is found that the setting of the arresters in the pipe system, which is recommended by the company, may not be proper for reducing the pressure to less than 1082.0 kPa when quick-closure valves in the pipe system are closed within 30 ms at the static pressure of 542.6 kPa. More arresters in the system may be required to meet a pressure criteria. |