Shop What are Alternative Energy Sources? Alternative energy encompasses all those things that do not consume fossil fuel.
Total global annual solar energy potential amounts to 1, EJ minimum to 49, EJ maximum Data reflects assumptions of annual clear sky irradiance, annual average sky clearance, and available land area. All figures given in Exajoules. Quantitative relation of global solar potential vs.
Ratio of potential vs. United Nations Development Programme — World Energy Assessment  Thermal energy Solar thermal technologies can be used for water heating, space heating, space cooling and process heat generation. In Shuman formed the Sun Power Company with the intent of building larger solar power plants.
He, along with his technical advisor A.
Ackermann and British physicist Sir Charles Vernon Boys ,[ citation needed ] developed an improved system using mirrors to reflect solar energy upon collector boxes, increasing heating capacity to the extent that water could now be used instead of ether. Shuman then constructed a full-scale steam engine powered by low-pressure water, enabling him to patent the entire solar engine system by Shuman built the world's first solar thermal power station in MaadiEgyptbetween and Although the outbreak of World War I and the discovery of cheap oil in the s discouraged the advancement of solar energy, Shuman's vision and basic design were resurrected in the s with a new wave of interest in solar thermal energy.
We have proved the commercial profit of sun power in the tropics and have more particularly proved that after our stores of oil and coal are exhausted the human race can receive unlimited power from the rays of the sun. Solar hot water and Solar combisystem Solar water heaters facing the Sun to maximize gain Solar hot water systems use sunlight to heat water.
|An analysis of solar energy as an alternative energy source||Alternate Energy Sources Introduction: Alternate energy refers to forms of energy that are constantly replenished by the Earth.|
|Alternative Energy||The sun, an average star, is a fusion reactor that has been burning over 4 billion years.|
Thermal mass is any material that can be used to store heat—heat from the Sun in the case of solar energy. Common thermal mass materials include stone, cement and water. Historically they have been used in arid climates or warm temperate regions to keep buildings cool by absorbing solar energy during the day and radiating stored heat to the cooler atmosphere at night.
However, they can be used in cold temperate areas to maintain warmth as well. The size and placement of thermal mass depend on several factors such as climate, daylighting and shading conditions. When properly incorporated, thermal mass maintains space temperatures in a comfortable range and reduces the need for auxiliary heating and cooling equipment.
As the chimney warms, the air inside is heated causing an updraft that pulls air through the building. Performance can be improved by using glazing and thermal mass materials  in a way that mimics greenhouses. Deciduous trees and plants have been promoted as a means of controlling solar heating and cooling.
When planted on the southern side of a building in the northern hemisphere or the northern side in the southern hemisphere, their leaves provide shade during the summer, while the bare limbs allow light to pass during the winter.
They can, however, be used on the east and west sides to provide a degree of summer shading without appreciably affecting winter solar gain. Solar cooker Parabolic dish produces steam for cooking, in AurovilleIndia Solar cookers use sunlight for cooking, drying and pasteurization.
They can be grouped into three broad categories: Reflector cookers use various concentrating geometries dish, trough, Fresnel mirrors to focus light on a cooking container. Solar pondSalt evaporation pondand Solar furnace Solar concentrating technologies such as parabolic dish, trough and Scheffler reflectors can provide process heat for commercial and industrial applications.
The use of evaporation ponds to obtain salt from seawater is one of the oldest applications of solar energy. Modern uses include concentrating brine solutions used in leach mining and removing dissolved solids from waste streams. In some states of the United States legislation protects the "right to dry" clothes.
The first recorded instance of this was by 16th-century Arab alchemists. These stills can operate in passive, active, or hybrid modes.
Double-slope stills are the most economical for decentralized domestic purposes, while active multiple effect units are more suitable for large-scale applications.
A further environmental advantage is that algae grow in such ponds and consume carbon dioxide in photosynthesis, although algae may produce toxic chemicals that make the water unusable.
It was demonstrated in the Solar Two project from — The most extended mixture contains sodium nitratepotassium nitrate and calcium nitrate. It is non-flammable and nontoxic, and has already been used in the chemical and metals industries as a heat-transport fluid, so experience with such systems exists in non-solar applications.
It is then sent to a hot storage tank. This is so well insulated that the thermal energy can be usefully stored for up to a week.
A megawatt turbine would need a tank about 9. Several parabolic trough power plants in Spain  and solar power tower developer SolarReserve use this thermal energy storage concept. The Solana Generating Station in the U. Electricity production Main article:The levelized cost of energy (LCOE) calculator provides a simple calculator for both utility-scale and distributed generation (DG) renewable energy technologies that compares the combination of capital costs, operations and maintenance (O&M), performance, and fuel costs.
Tax credits and solar tariffs affect timing of projected renewable power plant deployment tags: daily electricity generation renewables solar wind EIA raises crude oil, gasoline price forecasts for choosing to use alternative fuels. beneficial to stop and discuss each section of the Energy Source Analysis worksheet to keep students on task and monitor their understanding.
The Solar: energy produced by the sun. Wind: energy produced by the movement of air. Solar Energy Information. Read the latest news and techniques for efficient solar photovoltaic power, new solar energy systems and more. A clean energy revolution is taking place across America, underscored by the steady expansion of the U.S.
renewable energy sector.. The clean energy industry generates hundreds of billions in economic activity, and is expected to continue to grow rapidly in the coming years. The solar resource is enormous. Just 18 days of sunshine on Earth contains the same amount of energy as is stored in all of the planet's reserves of coal, oil, and natural gas..
Learn more about the solar .