Air at a 800 kPa and 1300 K enters an adiabatic and reversible turbine with a mass flow rate 6 kg/s. The outlet pressure is 100 kPa and assume that specific heats vary with temperature. What is the specific enthalpy of the inlet? Report your answer to two decimal places. No rounding is necessary.

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 = 0.28 kJ/kgk and cp = 1.02 kJ/kgK. The air enters the compressor at p₁ 1bar, T₁ = 300K and a mass flow 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 Answer: W tubine = ? State 4 Isentropic Turbine State 3 Steam T3=320°C P3= 2MPa What is the mass flow rate of steam through the turbine? Please enter your answer in kg/s

A gas turbine that operates on Brayton cycle provides a furnace with hot pressurized gas through its exhaust at 220kPa. The turbine produces only enough power as required by the compressor. The compressor has inlet conditions of 110kPa and 300K. The inlet condition of the turbine is 850oC. Determine the pressure ratio of the compressor. Draw the schematic diagram.

4. A two-stage air compressor with an intercooler takes in air at 14.6 psia at 62 degree F anddelivers it at 502 psia. The temperature of the air leaving the intercooler is 62 degree F.Calculate the work required per pound of air delivered if compression isisentropic, ft-lbf/lbA. (-)108,072 ft-lbf/lb C. (-)168,072 ft-lbf/lbB. (-)118,072 ft-lbf/lb D. (-)128,072 ft-lbf/lb