HYDRO AND OCEAN ENERGY 771/871 (3 - 7 August 2020)
Hydro and Ocean energy, also known as hydrokinetic power can
make a significant contribution to the generation of renewable
electricity. In this introductory course both ocean and hydro
energy will be studied, giving students a basic overview of their
resources, conversion technologies, project development and
implementation and the associated environmental and economic
It is possible to extract energy from the ocean's waves, currents, tides, salinity and temperature gradients, and converts, it into electricity. In this course the different ocean energy resources will be studied as well as the conversion technologies applicable to each. In addition aspects such as resource measurement and assessment, technology readiness, environmental concerns and the economics of ocean energy projects will be addressed, with particular emphasis on the available resource along the South African coast.
Economic and environmental considerations. Hydrological resources and project feasibility. Types of turbines. Specific speed and specific power parameters. Turbine selection criteria. Hydraulic energy, hydraulic losses, pipe friction and other losses. Turbine output. Multiple turbine units. Velocity of pressure waves in pipes. Basic operational constraints. Turbine cavitation. Turbine efficiency. Present hydro installations in the world and in Africa. Cost of hydro power. Technology developments. Future scenarios.