1.20 1.21 1.22 A certain amount of fuel contains 15 x 10¹0 Btu of energy. What is the corresponding energy in kilocalories? Ans. 3.78 x 10¹⁰ kcal The fuel of Problem 1.20 is converted into electric energy in a power station having a 12 percent overall efficiency. The average demand on the station over a 24-h period is 5 MW. In how many days will the fuel be totally consumed? Ans. 44 days. A certain amount of fuel can produce 10 quads of energy. In how many days will the fuel be totally consumed if it is used to satisfy a demand of 10¹3 Btu/day at a power plant with an overall efficiency of 20 percent? Ans. 200 days

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Electrical Heating Unit

The conversion of electrical energy to heat energy is known as electric heating. The heating system that converts the electrical energy to heat energy for various application is called electrical heating unit. Electricity is employed as the firing mechanism in electric heating systems, which transforms electric current to heat. Electric heaters have heating elements in the form of electric resistors.