3.1 Conversion scheme and operation
In the energy conversion process we must focus on the type of the turbine, based on the alignment of rotor axis with respect to water flow turbines can be classed in two groups, the axial axis and cross flow turbines. The selection of turbine type depends on the flow type, velocity and desired output of the system which is beyond the scope of this paper. A few types of turbine design scheme are given in the figures below.