The new GTCC plants with 60 thermodynamic efficiency bum nat

The new GTCC plants with 60% thermodynamic efficiency bum natural gas (assume it is pure methane). These emit less carbon dioxide into the atmosphere than do coal plants, for the same amount of output electricity produced. How much less - i.e. what is the ratio of [carbon dioxide from GTCC plants/carbon dioxide from coal plants] ? Assume that the coal plant bums pure carbon. Start with plants of the same electrical output (say 1000 MW), and proceed to solve the problem. (Note, once you get the answer it may surprise you. if you don\'t remember us discussing this in class. However, these assumptions are a bit simplified, since most coal contains about an equal number of hydrogen atoms as it does carbon atoms i.e c_100H_100S_2:Hence, carbon only provides about 80% of the heat from this coal composition, hydrogen essentially providing the rest (the sulfur merely pollutes).)

Solution

the gtcc thermo dynamic efficiency =60%

burn natural gas(Methane gas)

emit less carbon dioxide

the ratio of carbon dioxide from gtcc plants to carbon dioxide from coalk plants =60%/40%=3:2

coal plants burn pure carbon

carbon atomic num=6

carbon atomic weight=12

electrical output=1000mw

power =1000mw

power =wprk/time