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SOLAR POWER PLANTS
Transcript of SOLAR POWER PLANTS
Heating, cooling and ventilation
In many parts of the developing world solar energy is harnessed to pump water in remote areas. Solar energy is also used to power off-grid desalination plants.
Solar energy can be used to heat residential homes; many people use solar energy to heat their water supply and, particularly in Florida, their swimming pools as well.
Increasingly, solar energy is being used to power public transportation vehicles such as buses, trolleys and light-rails. Plans for solar-powered bus shelters are in the works as well.
Small gadgets that require little energy, such as calculators and watches, often use solar energy. Recreational vehicles and some boating equipment may also run on solar energy.
How do Solar Power Plants Work? How Can Solar Power Plants Be Used? Current Uses of Solar Power Plants Solar Power Plants
By:Christine, Sharon, and Josh
Solar power plants produce no air or water pollution or greenhouse gases. However, it has some indirect impacts on the environment. For example, the manufacturing of photovoltaic cells (PV) produces some toxic materials and chemicals.
Ecosystems can also be affected by solar power plants. Water from underground wells may be required to clean concentrators and receivers, and to cool the generator, which may harm the ecosystem in dry climates. Negative Environmental Impacts Positive Environmental Impacts The best thing about solar power plants in terms of its environmental effects is that it produces almost no carbon emissions or greenhouse gases. It doesn't burn oil, it doesn't produce toxic waste, and its lack of moving parts reduces the chances of an environmentally devastating accident to zero
Solar power plants are also environmentally advantageous because its energy supply never runs out. Sunlight will always shine upon the Earth and, as long as it does, hold energy which solar technology can exploit.
Solar Photovoltaic Plants:
These plants are very straightforward. Several solar power panels are installed to form an array. Typically, a handful of panels will be "strung" together in series on a single mounting system. Each set of panels collects solar energy, converts it directly into electricity, and sends that electricity through wiring to the electric grid. PV power plants are relatively rare because solar thermal power is currently much more efficient at producing electricity on a large scale.
Solar Thermal Power Plants:
In this set-up, solar energy heats a transfer fluid, which is used to heat water. That water creates steam to spin a turbine that can then produce electricity. Solar thermal power plants also work in a few different ways. The most common type uses a parabolic trough design. In these plants, commonly known as concentrated solar power (CSP) plants, several rows of trough-shaped, parabolic mirrors are strategically designed to capture and concentrate the sun's rays onto a focal point, much like a child might use a magnifying glass to burn ants. That point is a black pipe running the length of the row of mirrors. Inside this pipe is a transfer fluid, which heats up to very hot temperatures, often upwards of 300 degrees Fahrenheit. The heated fluid is piped to a power generator, where its heat is used to boil water, creating steam and electricity.
"Power Tower" Plant
Another version of a solar thermal power plant is a "power tower." Power towers take CSP technology in a new direction. Mirrors are situated to focus solar radiation onto a single focal point: a tall tower which houses a receiver that boils water to create steam. Mirrors are usually connected to a tracking system that allows them to follow the sun across the sky. Power towers have some key advantages, such as smaller footprints and relatively fast construction time.Solar Photovoltaic Plants. Photovoltaic plants are very straightforward. Several solar power panels are installed to form an array. Typically, a handful of panels will be "strung" together in series on a single mounting system. Each set of panels collects solar energy, converts it directly into electricity, and sends that electricity through wiring to the electric grid.
Are Solar Power Plants Accepted Today? Solar power plants are accepted today as a renewable energy source, for many of these reasons we stated. They are very clean, and widely popular throughout the world. More and more people are bulding solar power plants. Without these solar power plants the sun would be usleess for many people. The sun corresponds with the power plants which makes the energy widely efficent and long lasting. 15 - 30 Cents/kW-h. Solar power has been expensive, but soon is expected to drop to as low as 3.5 cents/kW-h. Once the silicon shortage is remedied through alternative materials, a solar energy revolution is expected. The cost does make this energy source prohibitive for common uses because it is alows people to pay for the energy they want/need and lets them have leftover money for other resouces. Cost of this Technology This is a list of solar thermal power stations:
Solnova Solar Power Station (Spain, 150 MW)
Andasol solar power station (Spain, 150 MW)
Extresol Solar Power Station (Spain, 100 MW).
370 MW Ivanpah Solar Power Facility, California's Mojave Desert
The Solana Generating Station is a 280 MW solar power plant, southwest of Phoenix, Arizona
Mojave Solar Park is a 280 MW solar thermal power facility, Mojave Desert California
As you can, all these solar power plant locations all have
something in common. They have a large amount of sun reflecting on them throughout the year. The sun is shining there more than 90% of the month. This is an advantage to many of these solar power plants, and thats why they are located there. Having a
great amount of sun around the power plant is a huge
advantage because that way the power plant can consume
more of the suns
http://en.wikipedia.org/wiki/List_of_solar_thermal_power_stations Citations (URL's)