Studi Eksperimental Perancangan Turbin Air Terapung Tipe Helical Blade

This research describes the design of floating helical water turbine for electric power generation in free flow and low head water operation. The design involves the use of strips attached to the blades of turbine. The efficiency of turbine (??) investigation was carried out using empirical formulas. The rotation of turbine (n) of the calculation with variation strips angles (450, 900, and 1350) were obtained through captive model tests carried out in towing tank. The result indicated the efficiency of turbine with variation strips at horizontal shaft is 450 = 0%, 900 = 35%, and 1350 = 34% respectively. The main parameter of the turbine that has influence on efficiency can be identified as: type of turbine blade, cross section of the turbine (A) and water flow velocity (V)