Answer Happy

Stoichiometry 14-cylinder laboratory test engine is supplied with isooctane fuel (CH) at a rate of 1.5 x 10 kg/sec. The fuel air equivalence ratio,q, is 0.8. a) is the mixture rich or lean? b) Write and balance the chemical equation describing the combustion process. c) Calculate the mole fractions of each of the gases making up the exhaust. d) Calculate the actual air flow rate in kg/sec. This is a continuation of the previous problem The hosting value of the fuel is 42000 kJ/kg. The mechanical enclency is 0.8), the brake thermal emciency is 0.25. An estimate of 35% of the energy entering the engine in the food is transferred to the cooling system. Calculate in kW w the bruke power 1) the Netton power the indicated power the heat transfer lost to cooling water system the total power lost in the exhaust gas if the specific heat is assumed to be 1.15 kJ/kg.K and the exhaust gas temperature is 300 "Cand the atmospherio temperature is 30°C. D the radiation heat transfer lost from the engine.