A power plant burns coal and generates an average of 615.0 MW of electrical power while discharging 1020.90 MW as waste heat. Find the total electrical energy generated by the plant in a 30-day period. Submit Answer Tries 0/5
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- A coal power plant consumes 100,000 kg of coal per hour and produces 500 MW of power. If the heat of combustion of coal is 30 MJ/kg, what is the efficiency of the power plant?Many decisions are made on the basis of the payback period: the time it will take through savings to equal the capital cost of an investment. Acceptable payback times depend upon the business or philosophy one has. For some industries, a payback period is as small as 2 yeas) Suppose you wish to install the extra insulation in the preceding problem. If energy cost $1.00 per million joules and the insulation was $4.00 per square meter, then calculate the simple payback time. Take the average T for the 120-day heating season to be 15.0 .A power plant has a power output of 1285 MWand operates with an efficiency of 32.4 percent. Excess energy is carried away as heatfrom the plant to a nearby river that has aflow rate of 1.1 × 106kg/s.How much energy is transferred as heat tothe river each second?Answer in units of J/s.
- Solar energy stored in large bodies of water, called solar ponds, is being used to generate electricity. If such a solar power plant has an efficiency of 3 percent and a net power output of 180 kW, determine the average value of the required solar energy collection rate, in Btu/h.A nuclear power plant has an electrical power output of 1300 MW and operates with an efficiency of 33%. If excess energy is carried away from the plant by a river with a flow rate of 1.0 ✕ 106 kg/s, what is the rise in temperature of the flowing water?How much heat transfer occurs to the environment per day by an electrical power station that uses 1.2 * 1014 J of heat transfer into the engine with an efficiency of 42%? How much electrical energy is generated per day?
- When a certain type of coal is burned at a power plant, 22.6 ×106×106 joules per kilogram are released that is subsequently used to boil water and produce steam. The steam then does work on the turbine to produce electricity. If power is produced at a rate of 480 megawatts as 102000 kilograms of coal are burned per hour, what is the efficiency of the power plant?An electrical power station uses 1.48 1014 J of heat input with an efficiency of 34.7%. (a) How much work is done?_____________________ J(b) How much waste heat is produced by the station?________________ J(c) What is the ratio of waste heat to work output? waste heat work output =_______________________You use a quantity of fuel with a total energy content of 19.02 MJ to power an engine. If the average output of the engine over 2 hours was 2.12 kW, what is the efficiency of the engine?
- A typical electric refrigerator has a power rating of600 W, which is the rate (in J/s) at which electricalenergy is supplied to do the work needed to removeheat from the refrigerator. If the refrigerator releasesheat to the room at a rate of 1000 W, at what rate (inwatts) does it remove heat from the inside of therefrigerator?A nuclear power plant has an electrical power output of 1125 MW and operateswith an efficiency of 42%. If excess energy is carried away from the plant by a river with a flow rate of2.1 × 106 kg/s, what is the rise in temperature of the flowing water?You want to heat your oven to 400°F. Given that your oven has a surface area of 1m2, about how much power is being emitted by your oven? a. 477 W b. 895 W c. 1600W d. 2947 W