Essays on US Department Of Energy

Wave and Wind Power Generation

Wind Physics Basics Wind is atmospheric air which is in motion Energy Source The earth surface absorbs solar radiation differently. Some parts absorb more radiation than other. This creates pressure zones. As a result of pressure, air moves from high-pressure zones to low-pressure zones. This causes atmospheric air motion known as wind. Wind is a renewable source of energy. It is constantly available free of charge (Bhattacharyya, 2011).

Spatial scales

Atmospheric air motion can be categorized depending in terms of spatial scale. Four spatial scales identified include planetary scale, synoptic scale, mesoscale, and microscale. There are various types of spatial scales ...

BRICS effect on global capitalist economy

The debates about the increasing role of emerging economies became more vigorous since the global financial crisis that became a start for a new global framework with the developing countries surfacing as a major hub. The most attention is given to the economies of Brazil, Russia, India, China and the South Africa (BRICS) that had demonstrated high growth during the last decade against the global recession. The future dominance of the BRICS may shift the economic center towards the multipolar model. Changes in the matrix of competitive forces (finance, resources, technology) lead to a decline in the economic, political ...

An automotive engine is a propulsion system responsible for moving automobiles from one place to another. An engine converts energy from a fuel or a battery to the mechanical energy used to spin the wheels, thus setting a vehicle in motion. There are different types of engines used in the automotive industry today. These include internal combustion engines and electricity driven vehicles. The internal combustion engines burn fuels such as petrol, diesel, natural gas or propane. Electric engines are fitted with electromagnetic motors that are powered by electric currents from storage batteries on the vehicle. The sole purpose of ...