Natural Vacuum Distillation

Under Vacuum Distillation

The majority of currently used water desalination methods require a large amount of energy input in the form of heat or electricity. Use of renewable energy sources such as wind, solar, geothermal and biomasses will result in a cleaner environment and sustainable energy production. Different desalination methods can take advantage of a number of these renewable energy sources. Among these methods is a relatively new procedure which aims to mimic the natural hydrological cycle of water, known as...

Wind Turbine Design and Performance

Downwind Hawt

Wind turbines are generally classified into two categories horizontal-axis wind turbines (HAWTs) and vertical-axis wind turbines (VAWTs). VAWTs incorporate a vertically oriented rotor shaft, with drivetrain components located at their base. Early VAWT designs include Savonius, Darrieus, and Giromill, or H-bar designs (Fig. 18.3). Although VAWTs have shown to have advantages over HAWTs in that they are omnidirectional and their drivetrain components easily maintained, their installation heights...