Figure 3 shows the velocity diagrams for 50% reaction and impulse turbines at different rotor speeds....

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Figure 3 shows the velocity diagrams for 50% reaction and impulse turbines at different rotor speeds. The subscripts 2 and 3 denote conditions before and after the rotor respectively. In both cases, the absolute velocity c2 is 400m/s at an angle a2 = 70°, and the absolute exhaust velocity c3 is axial. If the blades are uncooled and well insulated from the turbine disc, approximately what would the equilibrium temperature of the blades be in each case for an inlet gas temperature T02 = 1100 K? C3 C3 W3 U W3 U C2 W2 Kα₂-70° Figure 3 C2 Ka₂-70° W2 Figure 3 shows the velocity diagrams for 50% reaction and impulse turbines at different rotor speeds. The subscripts 2 and 3 denote conditions before and after the rotor respectively. In both cases, the absolute velocity c2 is 400m/s at an angle a2 = 70°, and the absolute exhaust velocity c3 is axial. If the blades are uncooled and well insulated from the turbine disc, approximately what would the equilibrium temperature of the blades be in each case for an inlet gas temperature T02 = 1100 K? C3 C3 W3 U W3 U C2 W2 Kα₂-70° Figure 3 C2 Ka₂-70° W2

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To find the equilibrium temperature of the blades we want to keep in mind the electricity balance fo... View the full answer