Ask Question
24 January, 07:37

a steam power plant has an average monthly net power delivery of 740 MW over the course of a year. This power delivery is accomplished by burning coal in the boiler. The coal has a heating value of 950 BTU/lbm. The cost of the coal is $14.20/ton. The overall thermal efficiency of the plant is,

+5
Answers (1)
  1. 24 January, 09:43
    0
    A steam power plant has an average monthly net power delivery of 740 MW over the course of a year. This power delivery is accomplished by burning coal in the boiler. The coal has a heating value of 950 Btu/lbm. The cost of the coal is $14.20/ton. The overall thermal efficiency of the plant is, nth Wnet = 0.26 = 26% Oboiler Determine the annual cost of the coal required to deliver the given average monthly power.

    Answer:

    Cost of coal per year = 61336.6 * $14 = $858712.4

    Explanation:

    1mw = 3412141.16btu/hr

    Thermal efficiency = (qWnet/qboiler) = 0.26

    Monthly output = 740mw

    So there fore:

    qboiler = (740/0.26) = 2846.2mw

    Convert mw to but/hr

    Qboiler = 9711636159.6but/hr

    Heating value of coal = 950btu/lbm

    Pounds of coal used per month = 9711636159.6 / (950) = 10222774.9

    Total amount of coal per year = 12 * 10222774.9lb

    = 122673298.9lb

    Convert to tons

    61336.6tons

    So therefore

    Cost of coal per year = 61336.6 * $14 = $858712.4
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “a steam power plant has an average monthly net power delivery of 740 MW over the course of a year. This power delivery is accomplished by ...” in 📘 Business if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers