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UNIVERSITY OF BALAMAND Faculty Of Engineering Department: Chemical Engineering CHEN 377 Chemical Engineering Thermodynamics II Tutorial 2
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2 Problem 1 (10 min) The following heat engines produce power of 95000 kW. Determine in each case the rates at which heat is absorbed from the hot reservoir and discarded to the cold reservoir. a) A Carnot engine operates between heat reservoirs at 750 K and 300 K. b) A practical engine operates between the same heat reservoirs but with a thermal efficiency of 0.35. Problem 2 (20 min) A rigid vessel of 0.06 m 3 volume contains an ideal gas (C V =2.5 R) at 500 K and 1 bar. If heat in the amount of 15 000 J is transferred to the gas, determine its entropy change in J/K. (Assume a constant volume process) Problem 3 (15 min) For a steady-flow process at approximately atmospheric pressure, what is the entropy change for
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  • Winter '15
  • Amir Alimohammad
  • Thermodynamics, Chemical Engineering Thermodynamics II, University of Balamand

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