A diesel engine with an engine volume of 4.0 L and an engine speed of 2500 rpm operates on an air–fuel ratio of 18 kg air/kg fue
l. The engine uses light diesel fuel that contains 800 ppm (parts per million) of sulfur by mass. All of this sulfur is exhausted to the environment, where the sulfur is converted to sulfurous acid (H2SO3). If the rate of the air entering the engine is 336 kg/h, determine the mass flow rate of sulfur in the exhaust. Also, determine the mass flow rate of sulfurous acid added to the environment if for each kmol of sulfur in the exhaust, 1 kmol sulfurous acid will be added to the environment. The molar mass of sulfur is 32 kg/kmol.
2 answers:
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Answer:
15300 N
Explanation:
= Density of air at inlet
= Mass flow rate = 60 kg/s
= Inlet velocity = 225 m/s
= Density of gas at outlet =
= Inlet area
= Outlet area =
Since mass flow rate is the same in the inlet and outlet we have
Thrust is given by
The thrust generated is 15300 N.