Water at 2.0 ke/s enters the boiler at 40 Cand 2000 kPa and exits the boiler at 2000 kPa The heat transfer rate into the boiler is 8 000 kw. The water exits the turbine as a saturated vapour at 400 kPa, What is the power produced by the turbine?
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- Answer this ASAP,thx In a steam turbine, saturated steam enters the turbine at a pressure of 16 MPa and a pressure in the condenser of 8 kPa. The mass flow rate of the fluid entering the turbine is 100 kg/s. calculate: A) the power produced B) the rate of heat transferred to the steam passing through the boiler C) the thermal efficiencyRefrigerant R-134a enters a continuous flow adiabatic compressor as saturated steam at a speed of 2 kg/s at -14 OC and is compressed to 0.8 MPa and 70 oC. If the kinetic and potential energy exchange is neglected, what is the power consumed by the compressor? a)110 kW b)130 kW c)78 kW d)94 kW (please can you help quickly)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.
- Steam flows steadily through an adiabatic turbine. The inlet conditions of the steams are 4 MPa, 500 C and 93m/s, and the exit conditions are 30 kPa, 89 percent quality, and 38m/s. the mass flow of the steam is 28kg/s. Determine:a) the change in kenitic energy b) the power outputc) turbine inlet areaWater 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?Question 1- Steam expands in a steam turbine steadily at a rate of 32,000 kg/h, that enters the turbine at 7 MPa and 600 °C (look to the Fig. 1); whereas, it leaves the turbine at 25 kPa as saturated vapor. If this turbine generates a power of 6.5 MW at the ambient conditions of To-27 °C, then, a) Write the mass balance of the fluid entering and leaving this turbine t b) Obtain the energy balance to determine the heat loss of the steam turbine c) Find the entropy generation using the entropy balance and determine the destroyed exergy using the generated entropy d) Find the exergy destruction using the exergy balance{ e) Find the maximum possible power output f) Determine the second-law efficiency (n) of the steam turbine (Note: Assume the kinetic and potential energies to be negligible) 7 MPa 600 °C STEAM TURBINE T. = 27°C 25 kPa Sat. vapor Fig. 1. The steam turbine with inlet, exit, and ambient properties
- Steam with a pressure of 6 MPa and a temperature of 400oC is created in a boiler at a flow rate of 0.406 m3/sec and then transported through a turbine, where it forms a saturated vapour with a pressure of 60kPa. The turbine loses 61 kJ/kg of heat to the surrounding environment at 37oC. Obtain: a) The turbine's output power.b) The highest amount of energy that can be generated.c) The turbine's second law efficiency.d) The irreversibility of the process.Saturated liquid R 134a with a flow rate of 0.05 kg / s at a temperature of 50 ° C is reduced to 200 kPa in a throttling valve, and then in a heat exchanger, R 134a firstly evaporates with the heat it receives from the other fluid and then heats up to 30 ° C at constant pressure. a) Find the quality value and temperature of the R 134a refrigerant after throttling. b) Find the heat given to the R 134a refrigerant in the heat exchanger. c) Calculate the water flow rate if the hot water coming from the boiler enters the heat exchanger at 40 ° C and leaves at 30 ° C.Steam of 6 MPa and 400oC produced in a boiler at a flow rate of 0.aa6 m3/sec is passed through a turbine, after which it becomes a saturated vapor and its pressure drops to 60kPa. The heat loss from the turbine to the environment of 37oC is bb kJ/kg. Obtain:a) The power produced in the turbine.b) The maximum power that could be produced.c) The second law efficiency of the turbine.d) The irreversibility associated with this process.
- Steam expands in a steam turbine steadily at a rate of 32,000 kg/h, that enters the turbineat 7 MPa and 600 oC (look to the Fig. 1); whereas, it leaves the turbine at 25 kPa as saturated vapor. Ifthis turbine generates a power of 6.5 MW at the ambient conditions of T0=27 oC, then,a) Write the mass balance of the fluid entering and leaving this turbine.b) Obtain the energy balance to determine the heat loss of the steam turbine,c) Find the entropy generation using the entropy balance and determine the destroyed exergy using thegenerated entropy,d) Find the exergy destruction using the exergy balance ,e) Find the maximum possible power output,f) Determine the second-law efficiency (ηII) of the steam turbine,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 %3DAn insulated 8 m³ rigid tank contains air initially at 305K and 181 kPa. A 15 heater running off a constant 108.1 V power source is used to heat the air. The heater is turned on long enough for the pressure to increase to 362 kPa. a) How much boundary work is done? KJ b) How long must the heater remain on (accounting for the fact that the specific heat is not constant)? minutes c) How long must the heater remain on assuming the specific heat is constant at a value taken from 300K? minutes