Su Dağıtım Sisteminde Yük Kaybını Hesaplamak için Hidrolik Modeller: Konya'da bir örnek çalışma

Öz

Sınırlı doğal su kaynakları ve tüm dünyada hızla artan nüfus nedeniyle su temin sisteminin yönetimi her geçen gün önemli hale gelmektedir. Ancak su dağıtım sistemlerinin çeşitli teknik sorunları vardır ve sistemdeki enerji kaybı bu sorunlardan biri sayılabilir. Bu çalışmada, Konya ili Yaka ilçesinde belirlenmiş bir alanın su dağıtım sistemi Hardy-Cross yöntemi ve su dağıtım sistemlerinin hidrolik modellemesinde sıklıkla kullanılan hidrolik simülasyon yazılımları EPANET ve WaterCAD kullanılarak incelenmiştir. Çalışmada EPANET ve WaterCAD için belirlenen alanın aynı verileri kullanılmıştır. Hesaplamalar, EPANET'te hesaplanan yük kaybının, su şebekesinde PVC borular kullanıldığında sırasıyla WaterCAD ve Hardy-Cross tarafından hesaplanandan %3,5 ve %16,2 daha düşük olduğunu göstermiştir. Su şebekesinde polietilen borular kullanıldığında, EPANET'te hesaplanan yük kaybı WaterCAD ve Hardy-Cross tarafından hesaplanandan sırasıyla %3,8 ve %26,6 daha düşük olarak bulunmuştur. Su dağıtım sistemi için model olarak WaterCAD ve Hardy-Cross seçilmesi durumunda, yük kaybını azaltmak için boru çapının artırılması gerektiğinden proje maliyeti bir miktar artacaktır. Yük kayıpları karşılaştırıldığında, EPANET'in WaterCAD ve Hardy-Cross'tan daha verimli olduğu sonucuna varılabilir.

Anahtar Kelimeler

• EPANET
• Hardy-Cross
• Model
• WaterCAD
• Su dağıtım sistemi

Hydraulic Models for Calculating Head Loss in Water Distribution System: a case study in Konya

Öz

The management of the water supply system becomes crucial day by day because of limited natural water sources and rapidly increasing population all over the world. However, the water distribution systems have various technical problems and the energy loss in the system can be counted one of these problems. In this study, the water distribution system of a designated area in the Yaka district of Konya was examined using Hardy-Cross method and, the hydraulic simulation softwares EPANET, and WaterCAD which are used in hydraulic modeling of the water distribution systems frequently. The same data of designated area were used for EPANET and WaterCAD in the study. The calculations demonstrated that the head loss calculated in EPANET is 3.5% and %16.2 lower than that calculated by WaterCAD and Hardy-Cross, repectively when PVC pipes were used in the water network. When polyethelene pipes were used in the water network, the head loss calculated in EPANET is 3.8% and %26.6 lower than that calculated by WaterCAD and Hardy-Cross, repectively. In the case of choosing WaterCAD and Hardy-Cross as the model for water distribution system, the project cost would increase slightly due to increasing the diameter of the pipes for reducing the head loss. It can be concluded that by comparing the head losses, EPANET is more efficient than WaterCAD and Hardy-Cross.

Anahtar Kelimeler

• EPANET
• Hardy-Cross
• Model
• WaterCAD
• Water distribution system

Kaynakça

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