TITLE.PM5

658 ENGINEERING THERMODYNAMICS dharm \M-therm\Th13-4.pm5 (i) 1-2—Heat rejection at constant pressure (ii) 2-3—Adiabatic compress ...

GAS POWER CYCLES 659 dharm \M-therm\Th13-4.pm5 or T T v vr 2 1 2 1 ==α ...(iii) v v v v v v v v v vr 2 1 2 3 3 1 2 3 4 1 =×=×= F ...

660 ENGINEERING THERMODYNAMICS dharm \M-therm\Th13-4.pm5 Adiabatic Adiabatic v(m )^3 (^1) 2 (27°C) 1 4 16 p (bar) 4 3 Fig. 13.31 ...

GAS POWER CYCLES 661 dharm \M-therm\Th13-4.pm5 It comprises of the following operations : (i) 1-2—Rejection of heat at constant ...

662 ENGINEERING THERMODYNAMICS dharm \M-therm\Th13-4.pm5 The various operations are as follows : Operation 1-2. The air is compr ...

GAS POWER CYCLES 663 dharm \M-therm\Th13-4.pm5 Now, from isentropic expansion, T T p p 2 1 2 1 1 = F HG I KJ −γ γ T 2 = T 1 ()rp ...

664 ENGINEERING THERMODYNAMICS dharm \M-therm\Th13-4.pm5 In case of a given turbine the minimum temperature T 1 and the maximum ...

GAS POWER CYCLES 665 dharm \M-therm\Th13-5.pm5 13.10.4. Open Cycle Gas Turbine—Actual Brayton Cycle Refer Fig. 13.35. The fundam ...

666 ENGINEERING THERMODYNAMICS dharm \M-therm\Th13-5.pm5 T 2 ′ 2 4 ′ 4 3 p 2 p 1 s 1 Fig. 13.36 and ηthermal= Net work output He ...

GAS POWER CYCLES 667 dharm \M-therm\Th13-5.pm5 13.10.5. Methods for Improvement of Thermal Efficiency of Open Cycle Gas Turbine ...

668 ENGINEERING THERMODYNAMICS dharm \M-therm\Th13-5.pm5 operating separately, are each equal to the isentropic efficiency of th ...

GAS POWER CYCLES 669 dharm \M-therm\Th13-5.pm5 Work 1 Air in 6 Exhaust ¢ L.P. T H.P. C T 2 ¢ C.C 2 4 ¢ 35 C.C 1 Reheater Fig. 13 ...

670 ENGINEERING THERMODYNAMICS dharm \M-therm\Th13-5.pm5 Although net work is increased by reheating the heat to be supplied is ...

GAS POWER CYCLES 671 dharm \M-therm\Th13-5.pm5 T s 5 ′ 4 5 3 2 ′ 2 1 6 Fig. 13.42. T-s diagram for the unit. 13.10.6. Effect of ...

672 ENGINEERING THERMODYNAMICS dharm \M-therm\Th13-5.pm5 T(Temp.) s (Entropy) Limiting turbine inlet temperature 3 ¢¢ 3 ¢ 3 4 4 ...

GAS POWER CYCLES 673 dharm \M-therm\Th13-5.pm5 123 4 5 6 7 8 9 10 0 4 8 12 16 20 24 28 32 36 40 44 48 Thermal efficiency (%) Pre ...

674 ENGINEERING THERMODYNAMICS dharm \M-therm\Th13-5.pm5 13.10.7. Closed Cycle Gas Turbine (Constant pressure or joule cycle). F ...

GAS POWER CYCLES 675 dharm \M-therm\Th13-5.pm5 p 23 pV = Cγ p 2 p 1 14 V Fig. 13.48. p-V diagram. T 2 = T 1 ()rp γ γ − 1 , where ...

676 ENGINEERING THERMODYNAMICS dharm \M-therm\Th13-5.pm5 ∴ ηair-standard = 1 – TT Trp Trp 41 4 1 1 1 − − −− () () γ γ γ γ = 1 – ...

GAS POWER CYCLES 677 dharm \M-therm\Th13-5.pm5 diagram as air heater. The air exhausted from the power turbine is cooled before ...