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 outlet area of the nozzles in a simple impulse turbine is 15.5 cm2? and the steam leaves them 0.91 dry at 1.4 bar and at 920 m/sec. The blade angles are 30° at inlet and exit, and the blade velocity is 0.25 of the steam velocity at the exit from the nozzle. The friction factor is 0.8. Find:  (a) the nozzle angle  (b) the power developed  (c) the diagram efficiency  (d) the axial thrust on the blading.

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 T,= 320°C P3= 2MPa What is the enthalpy at state 4? Please enter your answer in kJ/kg

For a turbocharged engine with a compressor efficiency of 59% what is the compressor outlet temperature (in degrees C) when running 30 psi of boost on a standard temperature and pressure day? What is the temperature gain produced in the intake air by the turbocharger?

Steam enters the nozzle operating a steady state pressure of 2.5 MPa and a temperature of 300 °C ( H1 = 3008.8 kJ/kg) and leaves at a pressure of 1.7 MPa with a velocity of 470 m/s. The rate of flow of steam through the nozzle is 1360 kg/hr. Neglecting the inlet velocity of the steam and considering the flow in the nozzle is adiabatic, find:a. the exit enthalpy in kJ/kg, ( H2)b. the nozzle exit area ( in cm) if V exit is 0.132 m^3 /kgc. the system

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 = P3 = 2 MPa, T3 = 320°C and exits at p4 5.9 kg/s and exits at p2 = 5.2 bars. The steam enters the isentropic turbine at = 100 kPa. 9 State 2 Isentropic Compressor State 1 Air - perfect gas T₁ = 300K P₁= 1 bar W = ? tubine Answer: State 4 Isentropic Turbine State 3 Steam T3=320°C P3= 2MPa How much power is required to run the compressor? Please enter your answer in kW.

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

The piston displacement of a double acting compressor is 0.358 m3/sec, delivers gas from 101. 325 Kpa and300°K to 675 Kpa at the rate of 0.166 m3/sec at 150 rpm. Value of n for compression and expansion is 1.33. Findthe bore and stroke assuming bore = stroke.

The blade tip angles of a reaction turbine are 32° and 25º for fixed and móving blades respectively. The mean ring diameter of a pair of blades is 1.5 m and the blade height is 0.15 m. The steam which passes through the pair at a rate of 20 kg/s is dry saturated at 24 bar. Find, (a) Axial velocity (b) Blade speed (c) Power developed at that speed.

1. Steam is supplied to a fully loaded 100 hp turbine at 200 psia with u, = 1160 BTU/lb, v, = 2.6 ft/lb and v1 = 380 ft/s. Exhaust is at 1.1 psia with uz = 900 BTU lb., v2 = 1200 ft/s. The heat loss from the steam in the turbine is 10.5 BTU.lb. Neglect the potential energy change and determine: a. the work per Ib steam b. the steam flow rate in Ib/hour 2. An ideal gas (R = 2,075 J/kg K and k = 1.659) goes through a reversible constant pressure process where 525 kJ o heat are added to 2.3 kg of the gas. The initial temperature of the gas is 310 K. Compute for the following: a. final temperature, T2 b. non-flow work Wn c. change in entropy AS d. flow work Assume AP = AK = 0) 3. A 3.6 kg. mass of air goes through an isothermal process with a temperature of 305 OK. The initial and final pressure of the air are 550 kPa and 135 kPa respectively. Compute for: a. steady flow work, Wf b. non-flow work Wn c. change in internal energy AU d. Heat transferred, Q e. change in entropy, AS