delw7lob5tw
Dołączył: 14 Mar 2011
Posty: 63
Przeczytał: 0 tematów
Ostrzeżeń: 0/5
Skąd: England
|
 Wysłany: Pią 6:20, 08 Kwi 2011 Temat postu: cheap jordan sneaker Boom Time fo nike jordans sho |
 |
|
With industry and government support now firmly invested in geothermal energy its uses in modern power production and direct heating will continue to grow. [link widoczny dla zalogowanych]
Sources
There are four main types of geothermal energy:
Geothermal energy was first established in the early twentieth century as a means of direct heating and producing power. It involves drilling a well into geothermal heat sources [link widoczny dla zalogowanych], from between 100 metres to ten kilometres beneath the surface of the earth. Hot steam or water is piped up from below and is used either for direct heating or transferred into electricity.
The technology has been rated by the United States Environmental Protection Agency as the most environmentally clean and effective source of alternative energy.
United States Environmental Protection Agency epa.gov 20/02/2010
It is predicted that geothermal energy use will double in the next six years. In the United States the Department of Energy unveiled a $28.4 Billion budget request for the 2011 year. The geothermal program will gain a 25per cent boost in funding. Alongside this industry will gain a boost in an incentive that will allow developers to recoup 30 percent of the cost of a new plant. (United States Department of Energy)
Hydrothermal Resources are available 100 metres to 4.5 kilometres beneath the earth’s surface and are usually used for direct heating purposes. The hydrothermal resource is captured by drilling into the earth to accessible water between 180 and 350 degrees Celsius and extracting the hot water or steam. Heat is transferred from below the surface into a heat pump that delivers the heat energy.Geo-pressured Resources exist between three to six kilometres beneath the surface where reservoirs of water and methane exist in the range of 90 to 200 degrees Celsius. The water is pumped to the surface to be used in direct heating or converted into electricity.Hot Dry Rock is a virtually limitless resource and more accessible than any other geothermal resources. This extraction method often involves drilling two wells; water is pumped down the first and subsequently heated and returned to earth to be converted into energy. New technologies are being developed to take advantage of this wealth of energy.Magma is the largest geothermal resource however is not easily accessible. Found at depths of between three and ten kilometres it has a temperature ranging from 700 to 1200 degrees Celsius and is the most powerful of geothermal resources although existing technology does not allow for the extraction of energy from magma.
Read on
Geothermal Heating
Geothermal Heat Pumps
A Brief Overview of Renewable Energy Sources
History of Geothermal Energy
United States Department of Energy energy.gov 20/02/2010
Governments and consumers alike are increasingly looking toward geothermal energy as a clean and effective alternative energy source. In what is looking like the new boom industry governments are investing heavily in the research and development of geothermal energy technology.
Post został pochwalony 0 razy
|
|
