1. Isobutane gas and liquid mixture (x=0.9) is running through a valve to get 100% vapor condition and then entering the turbine to produce work. The conditions are shown in the figure. Isobutane mass flow rate is 10 kg/s. Valve 20 Power out Turbine P₁ = 17bar T₁ = 91.78 C P2 = 10 bar 3 P3= .08 bar T=20C Determine: a. The turbine inlet diameter is D2=0.05 meters. Determine the inlet velocity V2=? b. If the turbine work is 535 kW what would be turbine outlet velocity in m/s? Neglect heat transfer and potential energy. c. compute the turbine exit diameter d. Plot the diagram T-V showing all stages 1-2-3

A jet engine consists of a diffuser, compressor, combustor, turbine, and nozzle. Flow in the diffuser and nozzle are isentropic and flow through the compressor and turbine can be idealized as isentropic. Label the inlets to each component as: a, 1, 2, 3, and 4, respectively, and the nozzle exit as 5. The given parameters are as follows: air pressure and temperature at the diffuser inlet, Pa and Ta, respectively, the speed of air entering the diffuser, va, the compressor pressure ratio, r, the turbine inlet temperature, T3, and the air pressure at the nozzle exit, P5 = Pa. Assume that the working fluid is air alone and use an air standard analysis, i.e., take into account the temperature dependence of air specific heats. Note: the kinetic energies at the diffuser inlet and nozzle exit are comparable to the corresponding enthalpies. a) Find symbolically, in detail, air temperatures at all principal locations: a, 1, 2, 3, 4, and 5 (where some of these are given). b) Find symbolically, in…

Air at a 800 kPa and 1300 K enters a turbine which has an isentropic efficiency of 90% with a mass flow rate 6 kg/s. The outlet pressure is 100 kPa and assume that specific heats vary with temperature.  1. What is the outlet temperature in K? Report your answer to one decimal place using rounding. 2. (image)

Read the problem carefully and provide complete solutions with derivation of formulas (integrals and derivatives). Complete solution and units please. Use two decimal plaas for final answers only. 3 min 5. A time- stage compressor receives air at 100 ft³ at 10 psia and the discharge pressure is pressure is 200 psia. If the temperature of the air received is 50 F, find the intercooler pressure, total compresser work and total heat rejected at the intercoolers Answer: 44.72 psia, 16. 31 hp, Bty 345.80 min

In turbochargers a turbine is directly connected to a compressor. The power harvested by the turbine is used to power the compressor. In the figure below a turbine runs on steam and powers a compressor on air. Air can be considered a perfect gas with k = 1.34, R = = 300K and a mass flow 0.28 kJ/kgk = 1bar, T₁ = and Cp 1.02 kJ/kgK. The air enters the compressor at p₁ rate of mdot = 5.9 kg/s and exits at p2 = 5.2 bars. The steam enters the isentropic turbine at P3 = 2 MPa, T3 = 320°C and exits at p4 = 100 kPa. State 2 Isentropic Compressor State 1 Air-perfect gas T₁ = 300K P₁ = 1 bar W Answer: tubine = ? State 4 Isentropic Turbine State 3 Steam T3=320°C P3= 2MPa What is the enthalpy at state 2? Please enter your answer in kJ/kg

Question 2 A two stage, single acting, reciprocating compressor takes in air at a rate of 2 m³/s at a pressure of 1 MPa @ 16°C. The air is compressed to 0.7 MPa while running at 10 rev/s. Compression is ideal and perfect intercooling takes place. The compression process follows pV1.25 = C. Neglect clearance. Calculate: 2.1. Intermediate pressure (0.265 MPa) 2.2. Volume of LP cylinder (20 Liters) 2.3. Volume of HP cylinder (7.5 Liters) 2.4. Total cycle power (42 kW)

I need help with some review problemsfor thermo! thank you  Air at 100 kPa and 280K is compressed steadily to 600 kPa and 400K in an air compressor. The mass flow rate of air through the compressor is 0.02 kg/s and the compressor a heat loss of 16 kJ/kg from the compressor occurs. Assuming steady state steady flow conditions and ideal gas behavior (with constant specific heats, Cp=1.009 kJ/kgK, R=0.287 kJ/kgK, determine: a)The necessary power input to the compressor (kW).b)The volumetric flow rate of air at the exit of the compressor (m3/s).

Q1. The adiabatic enthalpy drop in a given stage of a multi-stage impulse turbine is 22.1 16° KJ/kg of steam. The nozzle outlet angle is and the efficiency of the nozzle, defined as the ratio of the actual gain of kinetic energy in the nozzle to adiabatic heat drop, is 92%. The mean diameter of the blades is 1473.2 mm and the revolution per minutes is 1500. Given that the carry over factor is 0.88, and that the blades are equiangular (the blade velocity coefficient is 0.87). Calculate the steam velocity at the outlet from nozzles, blade angles, and gross stage efficiency.

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 1,700 kPa and 225°C. During a test run, the pressure atthe turbine inlet is 1000 kPa, the exhaust steam at 10 kPa has a quality of 0.95, the steam flowrate is 0.5 kg/s, and the power output of the turbine is 180kW. 1. What are the heat losses from the turbine? 2. What would be the power output if the steam supplied to the throttle valve were expandedisentropically to the final pressure?

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