2.13 The Four Corners power plant is located in New Mexico near where four state

Question

2.13 The Four Corners power plant is located in New Mexico near where four states meet: New Mexico, Arizona, Utah, and Colorado. It is one of the largest coal-fired plants in the world, with a generating capacity of 2,040 MW. Assume that the coal it burns has a carbon content of 75% and a heating value of 13,000 Btu/lb. Also, assume that the plant has a thermal efficiency of 38% and that it runs at an annual average operating rate of 80% of capacity. Calculate its emissions of carbon dioxide (tonne/yr).

This question from (Cooper & Alley, Air Pollution Control - A Design Approach, 4th ed., Waveland Press Inc., 2011. ISBN: 978-1-57766-678-3. )

Explanation / Answer

answer- the power generating capacity of Coal plant is 2040 MW.

carbon content of Coal is 75%

heating value 13000 Btu/lb

thermal rate 38%

we operating rate of plant is 80% and total generating capacity is2040. so we energy generated from coal plant is 80% of 2040 = 2040*80/100 =1632 MW

so the amount of carbon emission will be about

13000*75/100= 9750

now 9750/1632* 38 = 227.02 tonne/year

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