Solar power generator in nigeria,interim report card comments for kindergarten,free car colour check - Good Point

16.09.2014
Since the start of the industrial revolution, the human race has become more and more dependent on electric power to improve the living standards of people around the world. As the demand for power continues to increase and fossil fuel reserves deplete the price of power will continue to increase. The aim is to reduce the amount of carbon dioxide that is released into the atmosphere, thereby reducing the effects Power Generation has on global warming.
Currently, the burning of fossil fuels during combustion accounts for 86% of the energy consumed in the world. With surging demand for power worldwide, nuclear energy has become an important power source that may provide a cleaner alternative to address climate change. The energy that the sun provides our planet in one hour is more than the total amount of energy consumed worldwide in an entire year. Wind farms are used to harness energy from wind and convert the mechanical energy into electrical energy. The world’s oceans are vast and contain large amounts of energy carried by ocean waves, tides, salinity and ocean temperature differences. In 2009, for the second year in a row, both the US and Europe added more power capacity from renewable sources such as wind and solar than from conventional sources like coal, gas and nuclear, according to twin reports launched today by the United Nations Environment Programme and the Renewable Energy Policy Network for the 21st Century (REN21). Renewables accounted for 60 per cent of newly installed capacity in Europe and more than 50 per cent in the USA in 2009. The reports detail trends in the global green energy sector, including which sources attracted the greatest attention from investors and governments in different world regions.
Investment in core clean energy (new renewables, biofuels and energy efficiency) decreased by 7% in 2009 to the value of $162 billion. New private and public sector investments in core clean energy leapt 53 per cent in China in 2009. Globally, nearly 80 GW of renewable power capacity was added, including 31 GW of hydro and 48 GW of non-hydro capacity. China surpassed the US in 2009 as the country with the greatest investment in clean energy. The UNEP report focuses on the global trends in sustainable energy investment, covering both the renewable energy and energy efficiency sectors. Mohamed El-Ashry said, “Favorable policies now in place in more than 100 countries have played a critical role in the strength of global renewable energy investments recently. Generating technologies for deriving electrical power from the ocean include tidal power, wave power, ocean thermal energy conversion, ocean currents, ocean winds and salinity gradients.
Tides are caused by the gravitational pull of the moon and sun, and the rotation of the earth. Tidal barrages can change the tidal level in the basin and increase turbidity in the water.


One way to harness wave energy is to bend or focus the waves into a narrow channel, increasing their power and size. Best estimates indicate that we currently use approximately 320 billion kilowatt-hours of energy every single day (source: National Geographic).
Combine this with the effects of global warming and a shift has begun away from the burning of fossil fuels towards renewable energy sources.
Many alternative energy sources like; solar energy, wind energy, atomic energy and bio fuels have a lower impact on the environment and could contribute to a cleaner, greener future.
Not only do oceans contain enormous amounts of energy, but are located in close proximity to highly concentrated populations.
However, over time as oil reserves are depleted, we will turn to new, renewable sources of energy; some of which have been described in this article.
This year or next, experts predict, the world as a whole will add more capacity to the electricity supply from renewable than non-renewable sources. Many sub-sectors declined significantly in money invested, including large (utility) scale solar power and biofuels. If spending on solar water heaters, as well as total installation costs for rooftop solar PV, were included, total investment in 2009 actually increased in 2009, bucking the economic trend. China’s wind farm development was the strongest investment feature of the year by far, although there were other areas of strength worldwide in 2009, notably North Sea offshore wind investment and the financing of power storage and electric vehicle technology companies. Investment totals in utility-scale solar PV declined relative to 2008, partly a result of large drops in the costs of solar PV. The REN21 report offers a broad look at the status of renewable energy worldwide today, covering power regeneration, heating and cooling and transport fuels, and paints the landscape of policies and targets introduced around the world to promote renewable energy.
Resilience to the financial downturn that was hitting all sectors of the global economy and frustration that, while the UN climate convention meeting in Copenhagen was not the big breakdown that might have occurred, neither was it the big breakthrough so many had hoped for. Through burning of fossil fuels, mankind has been able to fuel this enormous power requirement.
There are also a number of more recent techniques being developed such as ocean energy and geothermal energy. Although considered cleaner than other fossil fuels, natural gas does contribute to pollution and global warming.
One of the greatest challenges is harnessing the energy from the sun in a cost-effective way. Wind power is increasing in popularity, however only accounts for approximately 1.5% of the global power supply. This is then used directly or mixed with chemicals to provide power through the combustion process. This process requires no fuel, is relatively cheap and could provide a sustainable source of energy well into the future.


As mankind evolves and strives for high living standards, energy efficiency and the environment will become increasingly important.
However, this decline was offset by record investment in small-scale (rooftop) solar PV projects. The REN21 report was produced by a team of authors in collaboration with a global network of research partners. Indeed, renewable energy is consistently and persistently bucking the trends and can play its part in realizing a low carbon, resource efficient Green Economy if government policy sends ever harder market signals to investors,” he added. Only about 20 locations have good inlets and a large enough tidal range- about 10 feet- to produce energy economically. Because water is about 800 times denser than air, tidal turbines will have to be much sturdier than wind turbines. The total power of waves breaking around the world’s coastlines is estimated at 2-3 million megawatts.
We do know that fossil fuels are rapidly depleting, are non-renewable and have contributed greatly to greenhouse gas emissions and pollution. When natural gas is released directly into the atmosphere it is far more harmful greenhouse gas than carbon dioxide but since this occurs in very small amounts, it is currently not a major cause of concern. There are however, a number of issues that need to be addressed before the ‘nuclear option’ can be considered as a reliable, clean power source. All we know for sure is that as our energy needs increase, so too will the need for renewable energy sources.
The simplest generation system for tidal plants involves a dam, known as a barrage, across an inlet.
Small, on-shore sites have the best potential for the immediate future; they could produce enough energy to power local communities. It is estimated that 21.3 billion tons of carbon are released through burning fossil fuels each year.
The management and disposal of spent fuel, public confidence, safety and ensuring nuclear non-proliferation and security are key areas that need to be addressed. Sluice gates on the barrage allow the tidal basin to fill on the incoming high tides and to empty through the turbine system on the outgoing tide, also known as the ebb tide.
Tidal fences have less impact on the environment than tidal barrages although they can disrupt the movement of large marine animals. There are two-way systems that generate electricity on both the incoming and outgoing tides.



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