aptzmcv的部落格

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• 點解我買左隻終極一班既DVD有31集,但係我上網焍只有2十幾集就話完,舊景係有幾多集呀---@1@
• 急須~木蘭辭普通話漢語拼音!!!明天(5月31日)要!!!~
• Hair Touch Salon,,IN'S Hair,,同 Hair Kiss 邊間整頭好-@1@

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Efficiency

發問:

A power station has an overall efficiency of 35% and it produces 200MW of electrical power. The fuel used in the power station releases 80MJ/kg of fuel burned. Calculate: a.The energy per second supplied by the fuel burned. b. The mass of fuel burned per day.

最佳解答:

a. The energy supplied per second = (200 X 106)W / 35% = 5.71 X 108 Js-1 b. The energy supplied per day = (5.71 X 108) X (3600) X 24 = 4.94 X 1013 Jday-1 So, the mass of fuel burned = (4.94 X 1013) Jday-1 / (80 X 106) MJkg-1 = 6.17 X 105 kgday-1 So, the mass of fuel is 6.17 X 105 kg per day.

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