Sizing and analysis of a ram turbine system

Zaključna naloga opisuje zasnovo in praktično uporabo črpalnega sistema s turbinskim ovnom. Z uporabo eksperimentalnih karakteristik modelov smo preračunali in dimenzionirali ključne komponente zasnovanega sistema. Najprej smo skicirali osnoven prototip sistema in določili začetne parametre. Nato smo z uporabo školjčnih diagramov določili kot lopatic gonilnika in relativno odprtje vodilnika za optimalno delovanje izbrane turbine in na podlagi dobljenih rezultatov preračunali dimenzije črpalke. Varnostno smo izračunali potopitev sistema zaradi preprečevanja kavitacije in matematično dokazali, da teoretično sistem deluje. Obravnavali smo sistem tudi v ekstremnih pogojih, kjer smo pokazali, da za naš primer 14,7 % padec gladine vode povzroči porušitev črpalnega sistema. Na koncu smo še razpravljali o pomanjkljivostih sistema in našli nekaj konstrukcijskih rešitev za boljše delovanje in izkoristek stroja in navedli možne smeri nadaljnjega raziskovalnega dela na tem področju.The final thesis describes the design and practical application of a pumping system with a turbine ram. In this piece, we parameterized and sized the key components of our pump system, using the experimental characteristics of base models. We first sketched the basic prototype system for later calculation and determined the initial parameters. Then, using geometrical characteristics shown in diagrams, we determined the angle of the driver blades and relative opening of the guide for optimal operation of the selected turbine, and based on the obtained results, we calculated the dimensions of the pump. We have calculated the safety suction lift due to cavitation and mathematically proved that the system theoretically works. We also considered the system in extreme conditions, where we showed that with our starting parameters a 14.7% drop in water level causes the pump system to collapse. Finally, we discussed the deficient elements and found some design solutions for better operation and efficiency of the machine and outlined possible directions for further research work in this field