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Problems QR Code Creator In None Using Barcode encoder for Software Control to generate, create QR Code ISO/IEC18004 image in Software applications. QRCode Scanner In None Using Barcode recognizer for Software Control to read, scan read, scan image in Software applications. 722 Isobutane expands adiabatically in a turbine from 5000 kPa and 52315 K (250 C) to 500 kPa at the rate of 07 kmol s' If the turbine efficiency is 080, what is the power output of the turbine and what is the temperature of the isobutane leaving the turbine 723 The steam rate to a turbine for variable output is controlled by a throttle valve in the inlet line Steam is supplied to the throttle valve at 1700 kPa and 49815 K (225 C) During a test run, the pressure at the turbine inlet is 1000 kPa, the exhaust steam at 10 kPa has a quality of 095, the steam flow rate is 05 kg s', and the power output of thc turbine is 180 kW (a) What are the heat losses from the turbine (6) What would be the power output if the steam supplied to the throttle valve were expanded isentropically to the final pressure 724 Carbon dioxide gas enters an adiabatic expander at 8 bar and 67315 K (400 C) and discharges at 1 bar If the turbine efficiency is 075, what is the discharge temperature and what is the work output per mole of C02 Assume COz to be an ideal gas at these conditions 725 Tests on an adiabatic gas turbine (expander) yield values for inlet conditions (TI, PI) and outlet conditions (Tz, P2) Assuming ideal gases with constant heat capacities, determine the turbine efficiency for one of the following: (a) TI = 500 K, P1 = 6 bar, Tz = 371 K, P2 = 12 bar, Cp/R = 712 (b) TI = 450 K, Pl = 5 bar, T2 = 376 K, P2 = 2 bar, Cp/R = 4 (c) Tl = 525 K, PI = 10 bar, T2 = 458 K, P2 = 3 bar, Cp/R = 11/2 (d) Tl = 475 K, Pl = 7 bar, T2 = 372 K, P2 = 15 bar, Cp/R = 912 (e) Tl = 550 K, PI = 4 bar, T2 = 403 K, P2 = 12 bar, Cp/R = 512 726 The efficiency of a particular series of adiabatic gas turbines (expanders) correlates with power output according to the empirical expression: Printing Denso QR Bar Code In Visual C# Using Barcode encoder for .NET framework Control to generate, create QR Code ISO/IEC18004 image in VS .NET applications. 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USS128 Creation In None Using Barcode maker for Software Control to generate, create GTIN  128 image in Software applications. 730 An expander operates adiabatically with nitrogen entering at Tl and PI with a molar flow rate A The exhaust pressure is P2, and the expander efficiency is q Estimate the power output of the expander and the temperature of the exhaust stream for one of the following sets of operating conditions (a) TI = 75315 K(480 C), P1= 6 bar, A = 02 kmol s' , P2= 1 bar, q = 080 (b) TI = 67315 K(400 C), PI = 5 bar, A = 015 kmol s', P2= 1 bar, q = 075 (c) Tl =77315 K(500 C), P1 =7bar, A =0175kmol s', P2= I bar, q =078 (d) Tl = 72315 K(450 C), P1= 8 bar, i z = 01 kmol sf', P2= 2 bar, q = 085 (e) Tl = 75515 K(482"C), PI= 655 bar, A = 023 kmol s', P2= 103 bar, q = 080 731 What is the idealwork rate for the expansion process of Ex 76 What is the thermodynamic efficiency of the process What is the rate of entropy generation sG What is wLOs, Take T = 300 K , 732 Exhaust gas at 67315 K (400 C) and 1 bar from internalcombustion engines flows at the rate of 125 mol s' into a wasteheat boiler where saturated steam is generated at a pressure of 1200 kPa Water enters the boiler at 29315 K (20 C) (T,), and the exhaust gases are cooled to within 10 K (10 C) of the steam temperature The heat capacity of the exhaust gases is Cp/ R = 334 112 x lop3TIK The steam flows into an adiabatic turbine and exhausts at a pressure of 25 kPa If the turbine efficiency q is 72%, (a) What is w,, the power output of the turbine (b) What is the thermodynamic efficiency of the boilerlturbine combination (c) Determine sG the boiler and for the turbine for (d) Express wl0,,(boiler) and %ost(turbine) as fractions of ( ~ i d , , lI, the ideal work of the process Encode Code 128A In None Using Barcode maker for Software Control to generate, create Code128 image in Software applications. 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