Sustainable Energy
2nd Edition
ISBN: 9781337551663
Author: DUNLAP, Richard A.
Publisher: Cengage,
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Chapter 3, Problem 9P
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Calculate the amount of coal produced in the UK between 1820 and the present.
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- A diesel engine required 9,800 kJ of heat to produce 1,800 kJ of power. What is its efficiency?arrow_forwardAnswers are given! please explain the steps of the full solution! ASAP Energy density of hydrogen in a 700bar tank is 5MJ/KG.arrow_forwardDetermine the mass of carbon tetrachloride that should be mixed with 80 kg of glycerin so that the combined mixture has a density of 1450 kg/m3.arrow_forward
- 1) Heating the water in a 55-gallon water heater requires about 2.0 x 103 kJ of energy. a) Assume the energy came from natural gas with 80% efficiency; how many grams of natural gas are required? b) Assume the energy came from electricity with 80% efficiency and that the electricity was produced from the combustion of coal with 30% efficiency; how many grams of coal are required? For problem above, calculate how much CO2 in grams is emitted to the atmosphere. For a: Use the balanced equation for the combustion of methane (CH4) to determine how many grams of CO2are produced from the amount of natural gas required. For b: Assume that coal produces 5.25 kJ of energy per gram of CO2 produced. Calculate how much CO2 in grams is produced.arrow_forwardTrue or False The total water content of coal can be determined by multiplying it by the total hydrogen, as all hydrogen is derived from moisture and mixed water.arrow_forwardA 60 MW steam power station has a thermal efficiency of 30%. If the coal burnt has a calorific value of6950 kcal/kg, calculate :(i) the coal consumption per kWh,(ii)the coal consumption per day.arrow_forward
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