Modularity Design for Archimedes Screw Turbine Shaft

Abstract

AbstractThis paper focuses on the modularity of Archimedes screw turbine (AST) shaft for obtaining features that have easy assembly and handling, especially in remote areas. Modularity enables the AST shaft to arrange into several component modules. Modularity requirements should be considering optimum dimensions of screw turbine blades for efficient energy conversion, shaft deflection, and joining strength between modules. The research uses three methods: Rorres formulation for calculation optimization dimensions of the screw turbine, the VDI 2222 method to guide its design meets the design requirements, and simulation analysis solid work to verify shaft deflection on each screw blade modularity. Modularity for AST shaft has been designed and resulted in a design draft of AST shaft modular. Finite element deflection analysis has been tested for the AST shaft with variations module simulation in the pitches number for 1, 2, 4, and 6 of screw blade per module. The greater the pitch number of the screw blade per module, the smaller the maximum deflection value of the shaft. Optimum dimensions of AST on research object have found that the volume maximum of each bucket is 0.000855 m3, with the number of pitches as much as 24.8, then the maximum total volume of the bucket is 0.02124 m3.KeywordsModularityEasy assembly and handlingPitch number per moduleOptimum dimensionShaft deflection