The energy density of coal can also be expressed in kilowatt-hours for some unit of mass, the units that electricity is most commonly sold in, to estimate how much coal is required to power electrical appliances. One kilowatt-hour is 3.6 MJ, so the energy density of coal is 6.67 kW·h/kg. The typical thermodynamic efficiency of coal power plants is about 30%, so of the 6.67 kW·h of energy per kilogram of coal, 30% of that-2.0 kW·h/kg-can successfully be turned into electricity; the rest is waste heat. So coal power plants obtain approximately 2.0 kW·h per kilogram of burned coal.
I copied it from wiki page
see the same for clear view
http://en.wikipedia.org/wiki/Coal
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Raghs
65% about Cheers M
The amount of heat needed to produce electricity depends on the type of power plant being used. In general, fossil fuel power plants such as coal or natural gas plants require high temperatures to generate steam that drives turbines to produce electricity. Renewable energy sources like solar or geothermal also rely on heat to generate electricity through different processes.
In the US, 49 percent of total production of electricity
To produce 1 ton of ammonia, approximately 1.7-1.8 tons of coal are needed. The coal is primarily used as a source of energy in the production of ammonia through the Haber-Bosch process.
A coal fired station burns coal to produce heat. The heat boils water to produce high pressure and temperature steam. The steam expands in a turbine to rotate the shaft. The turbines rotation drives a generator. The generator produces electricity which is sent out to the consumers. . I hope this helped, believe me i am a proffesional scientist
Coal power plants typically produce around 2-3 kilowatt-hours (kWh) of electricity for every pound of coal burned. The energy produced can vary depending on the efficiency of the plant.
In the US, about 50% of total electricity, but it varies from one country to another.
Simple answer, coal. We, as humans, have used coal since the bronze age for heat. In the 1800's when the industrial revolution started, coal was used to boil water. this water could drive a turbine, which is basically how we get our power today, things haven't changed too much in that respect.
Coal mining ended due to- heath and safety reasons, Sales went down a lot in 1980's coal has been replaced with gas and electricity so it is not needed as much!
That very much depends on the cost of the coal. Question has no answer
I found tons of answers on how much they can produce, but none on how much they can take. Does anyone know this?
1 year has 8766 hours, therefore a 100 watt bulb uses up 0.1 x 8766 units of electricity, that is 876.6 units. If coal was burnt to produce the energy, about 250 kg of coal (550 pounds) would be needed.