Posted by John in La on January 04, 2015 at 06:36:59 from (96.33.136.54):
In Reply to: Math question, CO2? posted by George Marsh on January 03, 2015 at 16:13:21:
I think we can all agree that N.G. puts less CO2 into the air then coal. The problem most have is agreeing if it is really needed; or can the planet absorb these higher CO2 levels. I believe that we should be worried about CO2 levels and looking for ways to cut our CO2 output.
But lets look at what that does to us on a global level.
We quit hauling coal from a mine in Pa. (to lets say) a electric plant in Ill because the electric plant has converted over to N.G. The train that hauled the coal put out more CO2 than the pipe line for the N.G. so we cut CO2 even more by switching.
But what did we really do? We created a glut in the coal market. It now makes it profitable to ship said coal over seas.
So now the train hauls the coal all the way to New Orleans doubling the CO2 output of the train. We load the coal on a ship that burns #6 bunker fuel in its engines....
putting out even more CO2. We load the coal back on trains taking it from a port on the coast of England or Germany to a electric plant in their country putting more CO2 into the air. And then we burn the same coal; in plants that are most likely not as efficient as ours here in the states; putting even more CO2 into the air.
So in the long run you have now put more CO2 into the air by switching to N.G. But you did make yourself feel good by cutting your CO2 output if only in your small world.
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