Question

thermodynamics

2) Superheated water vapor flows into a diffuser operating at steady state conditions. At the inlet the steam temperature is 300F, its pressure is 14.7 psi and its velocity is 500 ft/sec. The steam exits the diffuser at 60 psi, saturated vapor with negligible velocity. There is no significant change in potential energy. Determine the Heat Transfer from the surroundings to the Diffuser, Btu/lbm Include in your answer: a) Schematic b) Given-data table c) Engineering Model d) T-v Diagram e) Table Citations f) Calculations in a logical order, showing both symbolic equations and the variables that are then used to evaluate them.

Answer 1

za 0 Diffuser - sticum P2=6opsi saturated vapour vavo T1=300F Pi= 14.7psi Vi= 500 ftis statel Pi= 14.7psi 2 I hi= 1192.6 Btullo T = 500fls. I ni= 1192-6 Brullo Ti =300°F B= 6opsi & he=1178 et ulls States 22=1 J By energy balance, Eun - Eout = AE systein. =o (Steady) Ein =Eout hit U2 = hata q=hinha tvi = (1192-6-1778) Bullbm +(5004115) ByIllom i 2 (25037ff75) 19 = 19.59 Btullon bopsi 14.7831 300 F|- -|--