Consider a steam turbine power plant as shown with the given properties below. Enter state of pump is compressed liquid and isentropic pump efficiency is 75%. Assume no heat exchange between turbine and ambient and between pump and ambient (adiabatic process). And also neglecting any changes in kinetic and potential energies, calculate: a. The maximum turbine work output rate for mass flow rate of 100 kg/s. b. The turbine isentropic efficiency if the turbine exit state is saturated vapor. c. The pump work input rates and enthalpy values (isentropic and adiabatic) at the pump exit states d. The thermal efficiency of the cycle e. Draw the cycle in T-s diagrams and label states properly as isentropic and adiabatic states. Properties: P₁ = P4 = 20 MPa, T₁ = 800 °C, P₂=P3 = 30 kPa Qμ in QL WT

Consider a steam turbine power plant as shown with the given properties below. Enter state of pump is compressed liquid and isentropic pump efficiency is 75%. Assume no heat exchange between turbine and ambient and between pump and ambient (adiabatic process). And also neglecting any changes in kinetic and potential energies, calculate: a. The maximum turbine work output rate for mass flow rate of 100 kg/s. b. The turbine isentropic efficiency if the turbine exit state is saturated vapor. c. The pump work input rates and enthalpy values (isentropic and adiabatic) at the pump exit states d. The thermal efficiency of the cycle e. Draw the cycle in T-s diagrams and label states properly as isentropic and adiabatic states. Properties: P₁ = P4 = 20 MPa, T₁ = 800 °C, P₂=P3 = 30 kPa Qμ in QL WT

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter10: Heat Exchangers

Section: Chapter Questions

Problem 10.17P

See similar textbooks

Similar questions

The enthalpy entering the turbine of a geothermal power plant is 2750 KJ/kg and ,ass rate of 1 Kg/sec. The turbine brake power is 1000 KW condenser outlet has enthalpy of 210 KJ/kg. If temperature rise of cooling water in condenser is 8, what is the mass of cooling water requirement?
A geothermal power plant has the thermal energy at well head of 1,289 KJ, mass of the liquid of 82 kg, and specific enthalpy at final stage of 4.12 KJ/KG, what is the value of work at the heat utilization system of the plant?
A net of 2500 kW is needed from a gas turbine engine. Air enters the compressor section at 13.005kPag, 315K. The turbine sections receive the hot gas at 1905 K. Draw the (a) P-V and T-S diagrams. Find (b) air flowand, (c) thermal efficiency. (d) For the maximum work, what should be the temperature of the air leaving thecompressor. Consider rp = 11, k = 1.35 and R = 260.078 J/kgm-K.
A reversible engine converts one-sixth of heat input into work. When temperature of sink is reduced by 70 degree Celsius, its efficiency is doubled. Fin temperature of source and sink.
Water vapor enters an adiabatic turbine at a pressure of 8 MPa, a temperature of 600 ℃ and a speed of 100 m/s, and then a pressure of 50 kPa exits at a temperature of 150 ℃ and a speed of 160 m/s. The turbine power is 10 MW. According to this; a) The steam flow rate from the turbine b) Do you find the isanthropic efficiency of the turbine?
A flashed-steam geothermal power plant is located where underground hot water is available as compressed liquid at 2610 kPa and 250 C. The flashed steam enters a turbine at 557 kPa, 98% quality and expands to 10 kPa. The flow rate from the well is 40 kg/s. Mechanical efficiency is 90% and generator efficiency is 92%. Determine the power produced by the plant in KW.
Find the maximum thermal efficiency possible for a power cycle operatingbetween 1200 oF and 225 oF?
A flashed-steam geothermal power plant is located where underground hot water is available as saturated liquid at 620 kPa. The flashed steam enters a turbine at 530 kPa, 98 % quality and expands to 15 kPa, when it is condensed. The flow rate from the well is 27.8 kg/s. Over-all efficiency is 90%. Determine the power produced by the plant in KW.
A single stage air compressor handles of atmospheric pressure air and delivers it to a receiver at 652.75 kPa and flow rate of 0.0705 m3 /sec. Its volumetric efficiency is 0.72, its compression efficiency on an isothermal basis is 0.85 and its mechanical efficiency is 0.90. If it rotates at 350 rpm, what power in kW is required to drive it?
A turbine engine air intake is at pressure and temperature of air drawn 99 kPa and 29 0C respectively. The maximum pressure and temperature during the cycle is 990 kPa and 888 0C respectively. The adaibatic index as 1.4. After claculations, the pressure ratio of the cycle is , compressor exit temperature is K, turbine exit temperature is K, net specific work output from the gas turbine engine is in k, thermal efficiency is % and work ratio of the cycle is to I decimal place
Steam turbine with 1.5kg / s mass flow, 6MPa pressure, 500C temperature and 20 m / s speed is entering. The pressure at the outlet is 0.5MPa, the speed is 75 m / s and the degree of dryness is 0.95. Turbine power If its output is 2500kW, calculate the heat transfer from the turbine per unit time.
In a refrigerator the power rating impressed on the compressor is 1.2 kW. The circulating wire in evaporator is 5 kW and the cooling water took away 10 kW from condenser coil. The operating temperatures range is 18ºC and 0ºC and their corresponding latent heats are 170 kJ/kg and 230 kJ/kg and the difference between theliquid energy is 35 kJ/kg. Find the actual COP of the system (2) relative COP, assuming the vapor is just dry and saturated at the end of the compression.