Question

Example Problem # 17 Conservation Of Energy Steam at 1600-psi, 1000°F, and a velocity of 2-ft/s enters a turbine operating at steady state. As shown in Figure 4.51, 22% of the entering mass flow is extracted at 160-psi, 450°F, with a velocity of 10-ft/s. The rest of the steam exits as a two-phase liquid-vapor mixture at 1-psi, with a quality of 85% and a velocity of 150-ft/s. The turbine develops a power output of 9x108 Btu/hr. Neglecting potential energy effects and heat transfer between the turbine and its surroundings, determine [a] the mass flow rate of the steam entering the turbine, in Ib/hr. [b] the diameter of the extraction duct, in ft Find: [a] 1.91 106 Ib/hr [b] D2- 6.93 ft Given: Assume: COM COE CV-SSSF hi-hı (Pi, Ti) T.A.4.E v2-v2 (P2, T2) T.A.4.E in- out h2-h2 (P2, T2) T.A.4.E mAVy Sketch: Turbine T, F 3 2ft m,a, 22

Answer 1