Test 3 with Solution Key - Thermodynamics I | ME 215, Exams of Thermodynamics

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ME 215-001 TEST 3 Fall 2012 Work Out Problems Questions 10 — 11: Work out stated problems and show all work. . ‘ Wo Ty F, gro 10. (40%) A flow of 80 kg/s of tear} at 500 °C and P; = 800 kPa enters a well. insulated steam turbine through a duct of cross-sectional area of 24f. The steam expands to a saturated Vapor at P2 = 15 kPa and exits the turbine through an outlet that is 4 a. Assume that that there are negligible changes in pe’ 6 potential energy. What is the velocity at the entrance and exit of the turbine in m/s. What is the ~ temperature of the steam at the exit? How much power does this turbine produce in MW? nso WA Wet V+ 0.44332 A-@ ™'p av ‘ : 3 A, Viz Golf, Uataz2 *% EH .A332 0 Ne ea a Lo 2 «Ke om . ke 7 Voz wy . GO Zito p20" he.) ny ke — = V5 10,020 key - 24 Bf, % hy,= 3d 813 = 3 hatha: 2578, roo? erste (les S$" (000 "%; Ww > oe - 83 : = 69,046 9 /, 6d MW = w