Economic and environmental analysis

The following sections are aimed at assessing solar tower power plants according to economic and environmental parameters. Economic analysis. Within the scope of the economic analysis, power generation costs will be calculated for the discussed types of solar thermal power plants. In line with the preceding assessment method, applied throughout this book, the costs for construction and operation are determined and distributed in the form of annuities over the technical lifetime of the power...

Idealised wind energy converter

The considerations outlined throughout this section with regard to assessing the theoretical total capacity extractable by means of wind energy converters (such as a rotor) are based on the following ideal conditions and assumptions - frictionless, stationary wind flow, - constant, shear-free wind flow (i.e. wind speed is the same at every point of the energy extracting surface (e.g. circular rotor surface SRot) and flows into shaft direction), - rotation-free flow (i.e. no wind deviation into...

Wind turbine design

There is a wide range of different types of wind turbines. The most important features of various concepts include 7-3 - rotor axis position (horizontal, vertical), - number of rotor blades (one, two, three or multiple blade rotors), - speed (high and low speed energy converters), - number of rotor revolutions (constant or variable), - power control (stall or pitch control), - wind resisting strength (wind shielding or blade adjustment), - gearbox (converters equipped with gearbox or gearless...