2. (11 marks total) Ethanol (CHOH) burns in a domestic furnace at a pressure of 101.3...

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2. (11 marks total) Ethanol (C₂H₂OH) burns in a domestic furnace at a pressure of 101.3 kPa according to the following stoichiometric equation: C₂H₂OH + 4.0 (O₂+3.76 N₂) → 2.0 CO₂+ 3.0 H₂O + 1.0 O₂ + 15.04 N₂ The fuel and air enter the furnace at 25°C and the products leave at 40°C. Determine: (a) (2 marks) the dew point of the products; (b) (4 marks) the amount of water condensed from the products and the product composition after condensation, all in kmol/kmol fuel; (c) (5 marks) the heat transfer from the furnace in MJ/kmol fuel. Data: Ethanol: molecular mass M = 46 kg/kmol, higher heating value HHV = 31.6 MJ/kg. Product Enthalpies: CO₂ H₂O O₂ N₂ Ah at 40°C (kJ/kmol) 579 504 441 433 hfg (kJ/kmol) 43 961 2. (11 marks total) Ethanol (C₂H₂OH) burns in a domestic furnace at a pressure of 101.3 kPa according to the following stoichiometric equation: C₂H₂OH + 4.0 (O₂+3.76 N₂) → 2.0 CO₂+ 3.0 H₂O + 1.0 O₂ + 15.04 N₂ The fuel and air enter the furnace at 25°C and the products leave at 40°C. Determine: (a) (2 marks) the dew point of the products; (b) (4 marks) the amount of water condensed from the products and the product composition after condensation, all in kmol/kmol fuel; (c) (5 marks) the heat transfer from the furnace in MJ/kmol fuel. Data: Ethanol: molecular mass M = 46 kg/kmol, higher heating value HHV = 31.6 MJ/kg. Product Enthalpies: CO₂ H₂O O₂ N₂ Ah at 40°C (kJ/kmol) 579 504 441 433 hfg (kJ/kmol) 43 961

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a To determine the dew point of the products we need to compare the partial pressure of water vapor in the products with the saturation pressure of wa... View the full answer