Smulasi Kinerja Pompa Pada Sistem Jaringan Air Bersih

• Main Author: Perpustakaan UGM, i-lib
• Format: Article NonPeerReviewed
• Published: [Yogyakarta] : Universitas Gadjah Mada 2006
• Subjects: Jurnal i-lib UGM
• Online Access: https://repository.ugm.ac.id/25507/; http://i-lib.ugm.ac.id/jurnal/download.php?dataId=8502
• Institution: Universitas Gadjah Mada

Distribution main is the most important part of water distribution system as most of the investment of distribution system is allocated for it. Yet, for years engineers tend to take the design and construction of the system lightly. Many assumptions and simplifications have made the distribution main work unsatisfactorily. The need for pumping stations for example, is faced by most water companies. The operation for pumping stations may consume a large part of the total operation budget. Such situation should become the central consideration of the engineers. There are many possibilities of water transmission and distribution system designs that require pumping station. The use of tanks is an option that may improve pumping station efficiency. The layout of the system play an important role in cutting the operational cost. This paper discuss about mathematical modelling to simulate distribution system comprising reservoir, pipes, pumps, tanks, and demand-nodes. The demand fluctuation is based on Directorate General Cipta Katy(' Department of Public Work Indonesia (CK) average maximum daily peak and the demand coefficient fluctuation according to Gupta. Pump performance is based on a simple quadratic equation. The pipe flow model is based on Darcy-Weisbach equation, where the friction factors are defined dynamically depending on Reynold number. Six lay out of simple distribution mains yet represent the more complex situation of real distribution systems are tested to study pump performance (efficiency) on these different situations. The results show that the model has been able to simulate the pump characteristic in respond to demand as well as tank water level fluctuations. The existence of the tank significantly improve the efficiency of the pumps. Pump efficiency is slightly reduced when by pass pipe is installed from upstream to down stream of the tank. Finally, installation of a tank near and down stream of distribution area may improve pressure fluctuation at demand-nodes.