Title: Experimental Study of Water HammerPhenomena in Drinking Water PipelineDistribution Using Video Camera Method
Abstract: The huge energy potencies in the pressure release chamber on the drinking water pipeline distribution can be utilized by
installing the micro hydropower turbine. The problem that may be occurred is the water hammer effect which is caused by sudden closure
of a valve or malfunction of the turbine. Water hammer means a transient condition of fluid that is occurred while hydraulic operation. An
initial steady state hydraulic flow suddenly changes because of valve off or clogging. This transient wave leads to a high pressure change
dramatically that may damage the penstock, break the seal or break the turbine. Therefore prevention of water hammer phenomena should
be taken in account properly. This research is an experimental study on micro hydropower turbine in the laboratory scale intended to
provide solutions for reducing water hammer effect. The research is conducted to observe the effect of time closure of the valve to water
hammer and the solution due to installation of bifurcation pipe as a release valve before the turbine inlet. This research proposes a simple
method by using a video camera and slow motion playback to observe the water hammer effect, so that the pressure transient can be
captured. This research resulted that the method using video camera and slow motion playback can be used effectively to visualize the pressure transient, and the water hammer effect can be reduced with the delaying of time closure of the valve. The bifurcation did not give
significant result in reducing the water hammer effect compared to pipe with turbine without bifurcation. These results are also comparable with the theoretical calculation.
Index Terms— bifurcation pipe, drinking water pipeline, micro hydro, turbine, water hammer, valve closure, video camera.
Publication Year: 2013
Publication Date: 2013-02-02
Language: en
Type: article
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Cited By Count: 1
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