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Homework Help: Physic- Efficiency

  1. Nov 30, 2005 #1
    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?
     
  2. jcsd
  3. Dec 1, 2005 #2

    russ_watters

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    Staff: Mentor

    What have you calculated so far?
     
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