thompsonx
Posts: 23322
Joined: 10/1/2006 Status: offline
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ORIGINAL: Nnanji With sarcasm turned off let me point out one current fact of physics. The very best engines we can build are about 83 to 86 percent efficient. Tell us which commercially produced automobile or truck on the road in the world today gets more than 50% efficiency. No matter what, when you make energy to do something you lose 14 to 17 percent of the energy to environmental factors. So you make a train run on fossil fuel, it runs at...say...85% efficiency. Not possible so why postulate it dumbass? You burn that same fossil fuel to generate electricity you get that same 85% efficiency. "The global average efficiencies of electricity production are 34% for coal, 40% for natural gas and 37% for oil. For all fossil fuels, the global average efficiency is 36%. Wide variations are seen in efficiencies amongst countries, with OECD countries typically having the highest efficiencies. The level of efficiency has been slowly improving in recent years in most countries" https://www.iea.org/publications/freepublications/publication/En_Efficiency_Indicators.pdf But, then, when you use that electricity to run the train you lose another 15% in inefficiency. Transmission losses are closer to 50% dumbass So by running the train with electricity you have .85 x .85 = 72% efficient use of the fossil fuel as opposed to 85% efficiency using the fossil fuel directly. Fossil fuel is not currently used to directly power trains dumbass. They are diesel electric in which a diesel engine spins a generator which drives an electric motor which drives the train. Jesus you are phoquing stupid. It's a waste of energy and creates more fossil fuel demand. You have been shown to be full of shit. The same goes for charging car batteries in electric cars. No it does not dumbass. Electric motors are more efficient than i.c. motors All you do is place a large demand on the coal fired power plant. Oh, and I might point out, one of the very large environmental factor mentioned above is waste heat. Waste heat is not something global warming fruitcakes want to be added to the atmosphere. Perhaps, mr. fake scientist, you could calculate for us the difference in heat generated in a power plant to charge an electric car vs. the amount of heat generated by the Honda civic in your previous example per mile? I will admit that my math is simplistic and only represents what a rigorous calculation would find. Actually it represents your cumulative ignorance.
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