EML4304C Test 2 Spring 2009

EML4304C Test 2 Spring 2009 - EML4304C Test 2 Spring 2009...

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EML4304C Test 2 Spring 2009 10 points each problem Name_____________________________ Page 1 of 13 1. a) What is the power input to the compressor? a) 11.26 kW b) 14.93 kW c) 36.03 kW d) 29.61 kW e) 22.75 kW 1. b) What is the pressure of the refrigerant as it leaves the compressor (P 2 )? a) 1681.8 kPa b) 201.7 kPa c) 101.3 kPa d) 2117.0 kPa e) 1899.4 kPa 1. c) What is the enthalpy of the refrigerant as it leaves the compressor (h 2 )? a) 456.29 kJ/kg b) 432.53 kJ/kg c) 439.98 kJ/kg d) 429.32 kJ/kg e) 427.13 kJ/kg 1. d) What is the rate of heat out of the compressor? a) 2.31 kW b) 2.06 kW c) 1.53 kW d) 14.93 kW e) 0.62 kW 1. e) What is the rate of entropy generation in the compressor process? a) 0.0094 kW/K b) 0.0032 kW/K c) 0.0073 kW/K d) 0.0052 kW/K e) 0.0192 kW/K 2. a) For each mole of the reactant ethanol, how many moles of O 2 are produced? a) 0 b) 0.9 c) 3.0 d) 0.6 e) 3.76 2. b) For each mole of the reactant ethanol, how many moles of N 2 are produced? a) 14.664 b) 3.76 c) 1.3 d) 9.212 e) 13.536 2. c) What is the partial pressure of the water in the products (in kPa)? a)
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EML4304C Test 2 Spring 2009 - EML4304C Test 2 Spring 2009...

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