Calculating Efficiency of a Coal Fired Plant - 700 MW Electrical Power

[saved56]

A coal fired plant generates 700 MW of electrical power. The plant uses 5.8 * 10^6 kg of coal each day. The heat combustion of cal is 3.3 * 10^7 J/kg. The steam that drives the turbines is at a temperature of 320 C, and the exhaust water is at 45 C. Note: 700 MW= 7.0 * 10^8 J/s = 6.0 * 10^13 J/day.

What is the actual efficiency of the plant for generating electrical power?
What is the ideal efficiency of the plant for generating electrical power?

 

[russ_watters]

What have you calculated so far?