Sustainable Energy
2nd Edition
ISBN: 9781337551663
Author: DUNLAP, Richard A.
Publisher: Cengage,
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Question
Chapter 1, Problem 16P
To determine
Find the lower heating value of ethanol.
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Chapter 1 Solutions
Sustainable Energy
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- An instrumental for the analysis of trace hydrocarbons in air, or in the products of combustion uses a flame ionization detector. The flame in this device is fueled by mixture of 40% (vol.) hydrogen and 60%(vol)helium. The fuel mixture is contrained in a 42.8-liter tank at 1500psig and 298K. The atmospheric pressure is 1000kPa. What is the partial pressure of each constituent in the tank and the total mass of the mixture. Assume Ideal gas behavior for the mixture.arrow_forwardCellulose is to be burned in a waste-to- energy fadlity. The chemical equation for cellulose C6 H10O5is the atomic weights of C, H, and O are 12, 1, and 16. respectively. a. Calculate the stoichiometric oxygen necessary for the combustion of cellulose. b. Calculate stoichiometric air.arrow_forward(a) Locate, from an appropriate source, the composition for methanol and ethanol. Write down the formulas for the combustion of these two hydrocarbons. (b) Calculate the mass of CO2 produced per kg of methanol and ethanol burned. (c) Locate values for the heat of combustion of methanol and ethanol and determine the mass of CO2 produced per MJ of energy.arrow_forward
- The change in internal energy for the combustion of 1.0 mol of octane at a pressure of 1.0 atm is -5084.3 kJ . If the change in enthalpy is -5074.0 kJ , how much work is done during the combustion? Express the work in kilojoules to three significant figures.arrow_forwardWhich emits more SOx per unit amount of electricity produced; a coal-fired plant with a 90% efficient SO2 scrubber or an oil-fired plant with m scrubber? Assume the coal has a heat content of 13,000 Btu/lb and contains 3.5% sulfur, and that the oil has a heat content of 6.0(10)* Biu/barrel (42 gallons) and contains 0.9% sulfur, Assume the oil has a specific gravity of 0,92.arrow_forward2 m^3/min of a light oil are to be heated from 20C to 100C (with zero vaporization) in an exchanger using 250 kPa steam of 90% quality. The heat losses to the surrounding air have been estimated to be 5% of the heat transferred from the condensing steam to the oil. If the steam condensate leaves at its saturation point, what mass of steam per hour will be used in the exchanger? For light oil, Specific gravity= 0.88Specific heat= 2.00 kJ/kg-KFor steam at 250 kPa,Saturated liquid: hf= 535.49 kJ/kg vf= 0.001067 m^3/kgSaturated vapor: hg= 2716.8 kJ/kg vg= 0.7188 m^3/kgarrow_forward
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