Chapter 8, Problem 8.59P

SHOW COMPLETE AND LEGIBLE SOLUTION. FAST ANSWERS WILL BE GIVEN UPVOTE. ANSWER B ONLY.

) In an open cycle Gas turbine plant, air enters the compressor at 1 bar and 27° C. The pressure of air after compression is 4 bar. The A/F ratio is 140:1. The isentropic efficiencies of compressor and turbine are 82 % & 88% respectively. Find the net power developed and the thermal efficiency of the cycle if air flow rate is 1 kg/s. Take C.V. of fuel as 42000 kJ/kg, Cp for air and gas= 1 kJ/kg.K. and γ= 1.4 for air and gas. Sketch the cycle on T-s and p-v planes

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Which statement/s are true? Heat is transferred to a system by either an air-sourced Carnot heat pump, an electrical resistance heater or a heat source at temperature marginally higher than the system temperature. The loss of Carnot Work Potential (Exergy destruction, or T0Sloss term) is minimum when heat is added by the air-sourced Carnot heat pump.   Heat is transferred to a system either by an 100% efficient electrical resistance heater, or an 100% efficient isothermal heat source. The loss of Carnot Work Potential (Exergy destruction, or T0Sloss term) is zero when heat is added by the isothermal heat source.   Heat is transferred to a system by either an air-sourced Carnot heat pump, an electrical resistance heater, or a heat source at temperature marginally higher than the system temperature. The loss of Carnot Work Potential (Exergy destruction, or T0Sloss term) is maximum when heat is added by the electric resistance heater.   Heat is transferred to a system by either a…

Steam is delivered to turbine at 5.4 MPa and 600 degree C. Before condensation at 31 degree C, steam is extracted for feed water heating at 0.6 MPa. The turbine exhaust is 60 degree C. the required values of some state point properties are tabulated below. 10. Calculate the net work of the cycle.

In an ideal reheat cycle, the steam throttled condition is 8 MPa and 480 degree C. the steam is then reheated to MPa and 460 degree C. the turbine exhaust is 60 degree C. The required values of some state point properties are tabulated below.   3. Calculate the heat input during reheating process.

Carnot heat engine which produces 10 kJ of work for one cycle has a thermal efficiency of 50 percent. The working fluid is 0.50 kg of air, and the pressure and volume at the beginning of the isothermal expansion are 7 bars and 0.119 m3, respectively. Find  a. the maximum and minimum temperatures for the cycle, in degrees Kelvin,  b. the net work , and c.  the volume at the end of the isothermal expansion process , in m3.

7. Steam at 7.2 MPa, 600OC expands in a Rankine turbine to 0.45 MPa. For 180 kg/s of steam, determine the work, the thermal efficiency, and the steam rate (a) for the cycle, (b) for the turbine with the same specifications, the brake steam is 7.40 kg/kW-h and the driven electric generator has an efficiency of 91%. (c) Find eb, nb, WK, and quality or actual exhaust steam. Please answer letter c. Thanks

2. Steam is supplied to a fully loaded 100-hp turbine at 20 psia with u, Exhaust is at 1 psia with u, v, = 1100 fps. The heat loss from the steam in the turbin is 1 Btu/lb. Neglect potential energy change and determine (a) th work per lb steam and (b) the steam flow rate in lb/h. 1163.3 Btu/lb, v, = 2.65 ft/lb and v, = 400 fps = 925 Btu/lb, v, = 294 ft/lb an %3D %3D Solution p = 200 psia u, = 1163.3 Btu/lb. v = 2.65 ftlb %3D P2 = 1 psia = 925 Btu/lb V2 294 ft31b %3D %3D v, = 400 fps V2 = 1100 fps Q =-10 Btu/lb %3D Turbine W = 100 hp 2- 2 P, + K, + W + U, + Q = P, + K, + W + U, + w f2