Water vapor enters a continuous flow turbine at 9 MPa pressure, 500oC temperature and 60 m/s velocity, 20 kPa pressure and 95 percent dryness. degree, with a speed of 180 m/s. The turbine power is 10 MW and 5% of its power is heat transfer to the environment. a) Find the mass flow rate of the steam passing through the turbine. b) Find the inlet and outlet cross-sectional areas of the turbine. c) Calculate the adiabatic efficiency of the turbine.

Water vapor enters a continuous flow turbine at 9 MPa pressure, 500oC temperature and 60 m/s velocity, 20 kPa pressure and 95 percent dryness. degree, with a speed of 180 m/s. The turbine power is 10 MW and 5% of its power is heat transfer to the environment. a) Find the mass flow rate of the steam passing through the turbine. b) Find the inlet and outlet cross-sectional areas of the turbine. c) Calculate the adiabatic efficiency of the turbine.

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter40: Typical Operating Conditions

Section: Chapter Questions

Problem 10RQ: The seasonal energy efficiency ratio (SEER) includes the energy used in the _____and _____cycles.

See similar textbooks

Similar questions

Steam enters a turbine at 600 ᵒC at 7300kPa pressure and leaves the turbine as saturated steam at 75 kPa.. Turbine inlet diameter is 50 mm and outlet diameter is 300 mm. In case the velocity at the turbine inlet is 200 m / sFind the turbine output power a) find the heat transfer, ignoring kinetic and potential energy changes. B) kineticsExplain by calculating whether the energy change is negligible.
Steam enters a turbine at a mass flow of 1.4 kg/s, a pressure of 700 kPa and a temperature of 400 °C. Steam, 100 kPa pressure and 1.4 m3 / kg specific volume it comes out of the turbine. Heat transfer from the turbine to the environment is 50 kW, since the boundary temperature between the turbine and the environment is 70 °C, a) find the power generated by the turbine. b) calculate the entropy produced in the turbine. c) find the Isanthropic efficiency of the turbine. Note: changes in kinetic and potential energies will be neglected and T (k) = 273 + °C will be.
The air entering a compressor with a pressure ratio of 10 at 100kPa at 27°C leaves at 600K. It enters the turbine at a temperature of 1300 K and exits at a temperature of 800 K. Since the power of the gas turbine is 10 MW, b) Find the amount of fluid circulating in the installation. c) Find the adiabatic efficiencies of the gas turbine and the compressor. d) Find net work Note. Assume that the specific heat of heating of the air is constant. cp=1 kj/kgC cv=07181 kj/kgC
A pico hydro turgo turbine has a torque of 0.02Nm with a rotational speed of 41 rad/s. The nozzle or jet has a velocity of 14m/s with a diameter of 19mm. It has a volumetric flow rate of 0.00397 kg/s and a head of 10m. a) Using the specific gravity of water, find the efficiency of the turbine. b) Is the efficiency of the turbine too low? If so, what can you do to improve it.
The power generated by an adiabatic steam turbine is 5MW, when the steam enters the turbine at a pressure of 2.3MPa, a temperature of 400C and a speed of 50m/s; and leaves the turbine at a pressure of 15kPa, a quality of 90% and a speed of 180 m/s a) Represent the process on a P-V diagram. b) Find the mass flow rate of the steam. c) Find the exit area of the turbine.
At the inlet of a steady-flow steam turbine, the water vapor velocity is 55 m / s, the temperature is 600 ° C and pressure is 4 MPa, at its out; speed is 190 m /s,pressure is 15 kPa and its dryness is 92 percent. Meanwhile, heat transfer of 1800 kj / minute from the environment to the turbine is realized. Water Steam turbine power is 5 MW. Neglecting the potential energy change; a)Find the mass flow of water vapor. b)Find the inlet cross section of the turbine.
At the inlet to a certain nozzle the enthalpy of the fluid is 3025 kJ/kg and the velocity is 60 m/s. At the exit from the nozzle the enthalpy is 2790 kJ/kg. The nozzle is horizontal and there is negligible heat loss from it. i) Find the velocity at the nozzle exit. ii) If the inlet area is 0.10 m2 and specific volume at inlet is 0.19 m3/kg. Determine the exit fluid density (kg/m3) if thea area at the exit is one-tenth of the area at the inlet
Q.4:A) A single-stage reciprocating compressor takes Ikg/min at 1bar, 288K and delivers it at 5bar calculate the indicated power required and isothermal efficiency, assuming that the law of compression and expansion is PV = C and that the clearance is negligible. B) A certain natural gas has the following volumetric analysis: 60% CH4, 13% H2, 18% CO, 6% CO, and 3% O2. This gas is burned completely with the stoichiometric amount of dry air. Determine the theoretical the air-fuel ratio and the mole fraction of each products.
The air entering the turbine with 1200 K and 1200 kPa expands to 100 kPa pressure in two stages. When the air is reintroduced to 1200 K at a constant reheat pressure of 350 kPa and both expansion stages are ideally realized: a) Total expansion work (kJ/kg) b) Intermediate heating amount (kJ/kg) c) Calculate the rate of increase in work according to the stepless (without reheating) expansion. Features for air: k=1,4, R=0,287 Jkg K,F1,005 klkg K k = 1.4 R = 0.287 kJ/kgK Cp = 1.005 kJ/kgK %3D
1.In a steam power plant, steam enters the turbine at a pressure of 7.2 Mpa and 550°C and exhaust at 20 Kpa. The turbine inlet is 3 m higher than the turbine exit. Inlet velocity of steam 20 m's, and outlet velocity of 100m/s. a) Calculate the required steam flow for a 2MW plant capacity b.) with 90% stage efficiency, find the quality and enthalpy of exhaust steam
2) Water vapor enters a continuous flow adiabatic turbine at 15 MPa pressure, 500 °C temperature and 90 m/s velocity, and exits at 20 kPa pressure, 92% dryness and 80 m/s speed. Since the mass flow rate of the steam is 43.2 tons/h, a) The power produced in the turbine (in MW, HP, ton.km/h), b) Find the turbine inlet and outlet cross-sectional areas (in m2, cm2).
1.) A hand pump is used to inflate a bicycle tire to a gauge pressure of 70 psi. a) How much work must be done if each stroke of the pump is an adiabatic process and what is the final temperature of the gas? b) We inflate the tire in two steps: (i) an isobaric compression and (ii) an isochoric increase in temperature. Calculate the work done by gas/"us" and/or heat added/removed during the two steps! Is this a viable alternative to the adiabtic compression Explain! Atmospheric pressure is 1 atm, the air temperature is initially 25° C, and the volume of the air in the tire remains constant. Useful values: A bicycle tire is 26 in diameter and has a cross-sectional area of 2 in² [1 in = 2.54 cm]. 1 lb corresponds to a mass of 0.445 kg. c) For Take-Home only Solve the questions in a) and b) in terms of the initial pressure P₁ = P*, the final volume Vf = V* and the pressure ratio K = Pf/P*!