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# 4 - 2 Air at soo kPa and one it enters an adiabatic and...

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Unformatted text preview: 2. Air at soo kPa and one it enters an adiabatic and reversible nozzle at a velocity of so mils and leaves at sop icPa. The inlet area or the nozzle is 1oo cmz. Lise constant properties. The ratio of specific heats mav he assumed to be 1.40. A. Determine the exit temperature {It} of the air. {5 points} B. Determine the speciﬁc volume [mafkgi at the inlet and outlet of the nozzle. {5 points] C. Determine- the veiocitv {mfsl at the end of the nozzle. [5 points} D. Determine the exit area [mi]. {5 points] la} Frorn entropy conservation T P {HR [1]: [-1] 2 (3 IF ST'UAII'J.‘ = 138642 1'". P. T2 a 41m in: 9.34542 = 345.535: {tr} From ideal gas law 1:] =12}: re = ozerxmrsm: H.22915Lnr3i'kg From isentropic process P "Jr 5 ma v1 = u, [—L] = {1.1296(5) = 0.33oi'm3 Hrg P: tc} From energy eonservation al+Ffi2=h2+iff2 i; =42}; +Vﬁ—zh, =.{zc,(r, 4;] +111 =1i1x1099x{4ﬂﬁ—345.63}+3ﬂ1 = 3345”»: .I' a [ti] For mass conservation A, max 3” 3:033”?de 334.511 0.2296 ...
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