Your Questions About Solar Energy Generator Wikipedia

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Coal is primarily used as a solid fuel to produce electricity and heat through combustion. World coal consumption is about 6.2 billion tons annually, of which about 75% is used for the production of electricity.[citation needed] China produced 2.38 billion tons in 2006 and India produced about 447.3 million tons in 2006. 68.7% of China’s electricity comes from coal. The USA consumes about 1.053 billion tons of coal each year, using 90% of it for generation of electricity. The world in total produced 6.19 billion tons of coal in 2006.

When coal is used for electricity generation, it is usually pulverized and then burned in a furnace with a boiler. The furnace heat converts boiler water to steam, which is then used to spin turbines which turn generators and create electricity. The thermodynamic efficiency of this process has been improved over time. “Standard” steam turbines have topped out with some of the most advanced reaching about 35% thermodynamic efficiency for the entire process, which means 65% of the coal energy is waste heat released into the surrounding environment. Old coal power plants, especially “grandfathered” plants, are significantly less efficient and produce higher levels of waste heat.

The emergence of the supercritical turbine concept envisions running a boiler at extremely high temperatures and pressures with projected efficiencies of 46%, with further theorized increases in temperature and pressure perhaps resulting in even higher efficiencies.[8]

Other efficient ways to use coal are combined cycle power plants, combined heat and power cogeneration, and an MHD topping cycle.

Approximately 40% of the world electricity production uses coal. The total known deposits recoverable by current technologies, including highly polluting, low energy content types of coal (i.e., lignite, bituminous), might be sufficient for 300 years’ use at current consumption levels, although maximal production could be reached within decades (see World Coal Reserves, below).

A more energy-efficient way of using coal for electricity production would be via solid-oxide fuel cells or molten-carbonate fuel cells (or any oxygen ion transport based fuel cells that do not discriminate between fuels, as long as they consume oxygen), which would be able to get 60%–85% combined efficiency (direct electricity + waste heat steam turbine).[citation needed] Currently these fuel cell technologies can only process gaseous fuels, and they are also sensitive to sulfur poisoning, issues which would first have to be worked out before large scale commercial success is possible with coal. As far as gaseous fuels go, one idea is pulverized coal in a gas carrier, such as nitrogen. Another option is coal gasification with water, which may lower fuel cell voltage by introducing oxygen to the fuel side of the electrolyte, but may also greatly simplify carbon sequestration.

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Could it be imaginable, that Saturn is a generator for the sun?

No. If it were as you say, then it would be igniting other bodies also in the solar system (including Earth).

A very suitable and testable explanation for the production of energy in the Sun was already proposed in the early 20th century by Arthur Eddington. If you have an alternative, testable explanation, then please describe it so that it can be tested. Http://www.youtube.com/watch?v=b240PGCMwV0#t=0m37s

How can we know exactly what’s inside Saturn?

“Exactly”? We can’t.
But you can look at what happens in the parts we can see (above the surface) and compare with predictions of what would be expected for different kinds of things in the deep. Http://www.youtube.com/watch?v=b240PGCMwV0

Read this: http://en.wikipedia.org/wiki/Saturn#Internal_structure
and follow the links there.