Quick answer please 20 marks Problem 2 A 600MWe power plant

(20 marks) Problem (2) A 600-MWe power plant burns Alabama, Jefferson, St. Clair coal with average moisture and ash fractions of 18 and 15 percent, respectively. This plant operates with a heat rate of 9000 BtukWh. An analysis of the refuse pit gives a higher heating value of 2742 k/kg. An orsat analysis of the flue gas gives 12.78% 1.75% CO. Find: 1. The thermal efficiency of the power plant 2. The coal rate. air. 3. The dilution coefficient and percent excess 4. Compare between the mass rate of the forced draft fan and the mass rate of the induced draft fan if atmospheric conditions are 44C, 0.93 atm, and a relative of The exhaust gas is at 300 C, 0.88 atm.

Solution

The answer of the following question is as follows.

The thermal efficiency of the plant is 78% .

The diffusion coefficient is .87

The excess air is about 43%.