In an engine working on the diesel cycle the ratios of the weights of air and fuel supplied is 50: 1. the temperature of air at the beginning of the compression is 60 °c and the compression ratio used is 14: 1. what is the ideal efficiency of the engine. calorific value of fuel used is 42000 kj/kg. assume c, = 1.004 kj/kg k and c 0.717 kj/kg k for air

An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.