fter the condenser, the pump increases the pressure of the feed water (T=40 degrees celsius, mass slow is 2 kg/s) and the water is preheated in the feed water tank (mixing preheater) with water steam from the intermediate intake (P=200 kPa, T=150 degrees celsius). The water leaving the feed water tank is at a pressure of 200 kPa and 110 degrees Celsius. Determine and calculate the pressure of the water coming into the feed water tank from the pump and the mass flow of water leaving the feed water tank.

Question 3 Consider the turbocharger of an internal combustion engine. The exhaust gases enter the turbine at 450°C at a rate of 0.02 kg/s and leave at 400°C. Air enters the compressor at70°C and 95 kPa at a rate of 0.018 kg/s and leaves at 135 kPa. The mechanical efficiency between the turbine and the compressor is 95 percent (5 percent of turbine work is lost duringits transmission to the compressor). Using air properties for the exhaust gases, determine:(a).The turbine power output, compressor power input, air temperature at the compressor exit,(b).The air temperature at the compressor for the case of isentropic process and isentropic efficiency of the compressor.

A commercial airliner is flying at an altitude where the temperature and pressure of the air are -50°C and 26.5 kPa. An engine-driven compressor will take this air at T= -50°C, P₁ = 26.5 kPa and compress it to P₂ = P₂ = 85.0 kPa to pressurize the cabin. The air will be very hot when it exits the compressor, so a heat exchanger will be used to cool the air to T, = 20°C before it enters the cabin. Cold air at T₁ = -50°C will be used in the heat exchanger to cool the cabin air, and this air will exit the heat exchanger at T = 20°C (this air will be used to heat the cargo bay). The mass flow rate of the air delivered to the cabin is 0.80 kg/s and the compressor efficiency is 75%. Model the air as an ideal gas having constant specific heat, using 300 K values from Cengel's tables posted on Canvas. a) Find the actual temperature of the air exiting the compressor and the power input to the compressor (answers: 67.6°C and 94.5 kW). b) Find the rate of heat transfer in the heat exchanger and…

An adiabatic and steady-flow turbine with air as the working fluid initially at 6000 kPa and 550 K has a flow rate of 13.5 kg/s. At the exit of this turbine the air expands by 10 times its original specific volume to a pressure of 320 kPa.   What is the temperature of the air at the outlet of the turbine (in K)? Provide your answer up to 1 decimal place using rounding Assume that specific heats vary with temperature. What is the power produced in kW? Round your answer to the nearest whole number.   If specific heats are evaluated at the average temperature, what is the power produced by this turbine in kW? Round your answer to the nearest whole number.