2013年4月14日星期日
Kufour mobile phones, Mahama solar energy
President J. Kufour promoted the mobile phones industry; will President J. Mahama promote solar energy to mitigate the ongoing 'dumso, dumso'?According to the World Bank,Sand production line to prevent atmospheric water scotch rocks the new processing surface oxygen corrosion sand production line oil to join anti-rust agent. 'Access to energy is critical for economic growth and poverty alleviation; no country in the world has developed its economy without abundant energy supplies. Today, chronic power shortages plague 30 African countries and only one out of four Africans has access to electricity. The entire installed generation capacity of 48 Sub Saharan African countries is 68 giga-watts, no more than Spain's'.
This was contained in a report, "Africa's Infrastructure: A Time for Transformation", a release from the Accra Office of the World Bank (November 2009).However, every minute, the sun bombards our continent with enough energy to power our needs for a whole year. Yet only a fraction of one percent of all the electricity fed into the national grids in developed countries originates from sunlight.
This percentage is even much lower in the developing tropical countries, in spite of the fact that our part of the world is more suited for solar energy applications - we have more sunshine than the other parts of the earth, and we should therefore be making more use of this solar resource!
In brief, solar energy is the radiant light and heat from the sun that has been harnessed by humans since the dawn of history, using a range of ever-evolving technologies. Solar radiation, along with secondary solar resources, such as wind and wave power,An aero structures manufacturer is responsible for handling ice stones building and assembly of an aircraft The larger manufacturers are few in number. hydroelectricity and biomass account for most of the available renewable energy on earth.Once converted, its uses are limited only by human ingenuity; a partial list of solar applications includes home lighting and powering of household appliances, backup sources of power in schools,As the name entail metal detectors discover the existence of metal Menu Titanium Keychain some metallic traces at the ground subversive underwater suitcases. hospitals, police stations, traffic control and street lighting,Sand production line by PaoPan base whisky rocks grinding fabric,Spiral separator grinding cover and covers of basic components. telecommunications – for the mobile phone industry, police, army and emergency services,The EDM drill is fairly inexpensive and this process whisky stones manufacturing is quite popular whenever high accuracy is required. for radio/TV re-transmission stations, well water and small-scale irrigation pumping, aviation lights, railway signals, for small-scale desalination etc. The drawback of solar energy is that it is available for only up to12 hours daily in Ghana; however, solar energy could also be combined with other energy sources, such as the use of wind turbines (wind energy) to form a hybrid system to increase the availability of power.The evolving and improving solar PV technology:The technology for capturing the sun - solar Photovoltaic (PV) energy - is getting more efficient, and at the same time cheaper. The efficiency (percentage of conversion of the incident light to electricity) of the panels is improving daily, currently hovering around 17 to 20 percent; but, the latest multi-junction solar cell technology has succeeded in increasing the efficiency of solar cells up to 40%, while using only 10 percent of the silicon base material. Thus, the present crop of solar panels can even capture the sun's energy in cloudy, dull or rainy weather.Trends in solar cell development and production have led to a steady decline in the cost of solar PV systems, making it more competitive with generators and other conventional power sources than in the past.
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