Pelton turbine model performance assessment

U ovom radu opisana je energija vode i njena uloga u radu vodnih turbina. Objašnjena je svrha vodnih turbina zajedno sa njihovom podjelom ovisno o tipu konstruckija i principu rada. Za neke najznačajnije i najzastupljenije vodne turbine ukratko su opisane njihove karakterisitke i dijelovi konstrukcije. Provedena su četiri eksperimentalna mjerenja na modelu H19 Pelton trubine zasnivana na modelskim ispitivanjima i teoriji sličnosti. Svako od mjerenja provedeno je u različitim uvjetima sa početno zadanim tlakom i protokom, a vrijednosti koje je bile potrebno izmjeriti su broj okretaja i sile na dinamometrima.This paper describes the energy of water and its role in the operation of water turbines. The purpose of water turbines together with their division depending on the type of construction and the principle of operation is explained. For some of the most significant and represented water turbines, their characteristics and construction parts are briefly described. Four experimental measurements were performed on the H19 Pelton tube model based on model tests and similarity theory. Each of the measurements was performed under different conditions with an initial set pressure and flow, and the values that needed to be measured were the number of revolutions and the forces on the dynamometers. Laboratory measurements were followed by a calculation of torques, mechanical and hydraulic power, and utility