Re: New Coal Power Plants

peterwezeman@xxxxxxxxxxx wrote:
I heard on the radio that utilities building new coal fired plants
generally prefer conventional steam plants rather than the newer design
where the coal is gasified and then burned in a gas turbine with steam
bottoming cycle. I find this somewhat surprising as the gasification
plants have a thermal efficiency of 45 percent versus 30-35 percent for
steam plants, and gasification plants have been operating successfully
in this country for over a decade. Are the costs of a gasification
system so great as to offset the increase in efficiency?

Thank you,
Peter Wezeman
anti-social Darwinist


Does this 45% count just burning the gas for electricity, or does it include the whole path from coal to electricity? In other words, does it account for the losses when converting coal to gas?

--

Paul Studier <Studier@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
When you work, you create.
When you win, you just take from the loser.
For an explanation, see http://paulstudier.com/win
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