Steam enters a turbine with a pressure of 30 bar, a temperature of 440 C, and velocity of 160 m/s. Saturated vapor at 100C exits with a velocity of 100 m/s. at steady state, the turbine develops work equal to 540 Kj per Kg of steam flowing through the turbine. Heat transfer between turbine and its surroundings occurs at an average outer surface temperature of 350 K.

a (a) Air in (b) (c) Diffuser Compressor Combustors 2 State State 1 80 State 2 3300 State 3 3200 State 4 400 State 5 80 wwww Pressure (kPa) 3 Turbine 4 Figure 1: Figure for Problem 2. In a modern jet engine, air passes through the following states from the inlet to the outlet, as shown in Figure 1: Product gases out 260 780 1500 900 640 K 5 > Nozzle justify them) to find the compressor specific work. Temperature (K) For this problem, you may neglect any heat transfer, as well as neglect kinetic energy except at the outlet (state 5). Use the tables for obtaining properties (do not assume constant specific heat). Assume air is an ideal gas with ideal gas constant of R = 0.287 kJ/kg-K. Use the appropriate conservation equations and make approximations (and In a similar manner, find the turbine specific work. And finally, using similar arguments, find the nozzle exit velocity.

Need ASAP thank you.

5. Gas Power Cycle in a Closed System with External Heat Exchange Air in a closed system undergoes the following reversible three-step cycle: 1-2 Isothermal compression of air at T1 = 27°C. The initial pressure is p1 = 2bar 2-3 Isochoric heating to T3 = 1200K . %3D 3-1 Adiabatic reversible expansion to state 1. Consider air as ideal gas with variable specific heats, and gas constant R kJ 0.287 kgK' As you solve the problem, populate the table with the data you need. Use free columns as you like. State T/ p/ v/ u/ h/ 1 2 3 a) Draw the process curve in a p-v-diagram, and in a T-s-diagram. b) Determine the volume V2 = V3 c) Determine work and heat per unit mass of air for each step. d) Determine the thermal efficiency of the cycle. e) The engine runs at 1800 rpm and delivers 12 kW of power. Determine the air mass in the engine and the swept volume. The engine is externally heated, and does not exchange air with the surroundings.

Only answer part2.

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8.0 RESULT/ CALCULATION The power stroke in an internal combustion engine can be approximated with a polytropic expansion. Consider air in a cylinder volume of 0.2 L at 7 MPa, 1800 K. It now expands in a reversible polytropic process with exponent, n = 1.5, through a volume ratio of (VN1) 8:1. Calculate the work and heat transfer for the process. PV1.5 = C

Rankin cycle (Thermodynamics) Show complete and step by step solution. And show the diagram.

Steam power plant shown in figure isoperating at steady state with water as the workingfluid. The mass flow rate of the water circulatingthrough the components is 50 kg/s. Determine: d) isentropic pump efficiencye) mass flow rate of the cooling water, in kg/s.f) rates of entropy production, each in kW/K, forthe turbine and steam generator.Include all the relevant governing equations andreferences to the tables you use. Be organize

Q1. Heat engines convert internal energy to mechanical energy. Describe the operation of this reversible engine on a PV diagram and show how to determine the efficiency of the cycle.