Atwo-liter, four-cylinder, open-chamber si engine operates at 3500 rpm using stoichiometric gasoline. at this speed, volumetric efficiency is 93%, combustion efficiency is 98%, indicated thermal efficiency is 47%, and mechanical efficiency is 86% calculate:

(a) brake power. [kw]

(b) bmep. [kpa]

(c) amount of unburned fuel exhausted from the engine. [kg/hr]

(d) bsfc. [gm/kw-hr]

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.