The technicians with correct approach.

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The technicians with correct approach.

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Temperature EXAMPLE 1: A diesel engine is fitted with a turbocharger, which comprises a radial compressor driven by a radial exhaust gas turbine. The air is drawn into the compressor at a pressure of 0.95 bar and at a temperature of 15°C, and is delivered to the engine at a pressure of 2.0 bar. The engine is operating on a gravimetric air/fuel ratio of 18: 1, and the exhaust leaves the engine at a temperature of 600°C and at a pressure of 1.8 bar; the turbine exhausts at 1.05 bar. The isentropic efficiencies of the compressor and T(K) turbine are 70 per cent and 80 per cent, respectively. Calculate (i) the temperature of the air leaving the compressor (ii) the temperature of the gases leaving the turbine (iii) the mechanical power loss in the turbocharger expressed as a percentage of the power generated in the turbine. Using the values of : Cpair = 1.01 kJ/kg K, Vair = 1.4 Cpex = 1.15 kJ/kg K, Yex = 1.33 and 2s с P2 Engine P3 W W₁ = mexpex (T3-TA) At W₁ = mair Cpex (T2-T₁) 4 P4…

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