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negative indicates that power
input to compressor and positive power output .
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An ideal gas with constant heat capacity (C 1 kJ/kg K, R-0.3...
Air, modeled as an ideal gas, is compressed at steady state from 1 bar, 300 K,...
Air, modeled as an ideal gas, is compressed at steady state from 1 bar, 300 K, to 5 bar, 500 K, with 190 kW of power input. Heat transfer occurs at a rate of 25.33 kW from the air to cooling water circulating in a water jacket enclosing the compressor. Neglecting kinetic and potential energy effects, determine the mass flow rate of the air, in kg/s.
An ideal gas (k=1.4, R=0.27 kJ/kg K) enters a steady, single inlet, single outlet compressor that...
An ideal gas (k=1.4, R=0.27 kJ/kg K) enters a steady, single inlet, single outlet compressor that is operating reversibly at 1 bar and 30 °C and exits at 5 bar. Find the specific work (W = .) if the compressor is operating isothermally and kinetic and potential energy changes are neglected. 0-188.47 kJ/kg O None of the choices are correct O-110.39 kJ/kg 0-131.73 kJ/kg 0-140.42 kJ/kg
A combined cycle gas turbine/vapor power plant uses the turbine exhaust as the energy source for...
A combined cycle gas turbine/vapor power plant uses the turbine exhaust as the energy source for the boiler. Each power system uses a single turbine. The gas power system is modeled as an ideal air-standard Brayton cycle. The vapor power system is modeled as an ideal Rankine cycle. Given specific operating conditions determine the temperature and pressure at each state, the rate of heat transfer in the boiler, the power output of each turbine, and the overall efficiency. --Given Values--...
Thermodynamics 1. Saturated liquid H20 at 16 MPa is fed into the boiler of a variant of a Carnot cycle (but simplified Rankin cycle) where the working fluid is not an ideal gas. Saturated H20 va...
Thermodynamics
1. Saturated liquid H20 at 16 MPa is fed into the boiler of a variant of a Carnot cycle (but simplified Rankin cycle) where the working fluid is not an ideal gas. Saturated H20 vapor is fed into the turbine of the same turbine. The condenser of this turbine is operated at 8 kPa. The mass flowrate of the H20 in this cycle is 7.2x103 kg/min. Draw the path of this process on T-s diagram. Estimate the thermal efficiency...
A combined cycle gas turbine / vapor power plant uses the turbine exhaust as the energy...
A combined cycle gas turbine / vapor power plant uses the turbine exhaust as the energy source for the boiler. Each power system uses a single turbine. The gas power system is modeled as an ideal air-standard Brayton cycle. The vapor power system is modeled as an ideal Rankine cycle. Given specific operating conditions determine the temperature and pressure at each state, the rate of heat transfer in the boiler, the power output of each turbine, and the overall efficiency....
1. Superheated water steam at 5 bar and 360 C enters a turbine operating at steady...
1. Superheated water steam at 5 bar and 360 C enters a turbine operating at steady state with a volume rate of 0.7 m3/s and expanded adiabatically to the exit state of 1 bar and 200 C, respectively. Kinetics and potential energy changes can be neglected. Determine: a) (2 pts) mass flow rate in kg/s (2 pts) power developed in kW (3 pts) total rate of entropy production in kW/K (4 pts) isentropic turbine efficiency
uestion l [use R= 0.287 kJ/kg K, c,-1.0035 kJ/kg K1 a) Air flowing at a rate...
uestion l [use R= 0.287 kJ/kg K, c,-1.0035 kJ/kg K1 a) Air flowing at a rate of 1.6 kg/min is compressed by a 5 kW compressor under steady-state conditions, from 100 kPa and 17°C to 600 kPa and 167°C. During this process, some heat transfer takes place between the compressor and the surrounding medium at 17°C. Determine the rate of entropy change of air during this process, stating clearly any assumptions. (5 Marks)
(thermodynamics) i need help with questions 5,6,7 5 Consider a steam power plant that operates on...
(thermodynamics) i need help with questions 5,6,7
5 Consider a steam power plant that operates on a simple ideal Rankine cycle and has a net power output of 45MW. Steam enters the turbine at 7 MPa and 0Cand is cooed in the condenser at a pressure of 10 kPa by nuning cooling watr from a lake through the tubes of the condenser at a nte of 2000 kgs Show the cycle on a T-s diagam with respet to saturation lines,...
An ideal gas has a gas constant R = 0.3 kJ / kg K and the...
An ideal gas has a gas constant R = 0.3 kJ / kg K and the specific heat at constant volume is Cv = 0.7 kJ / Kg K. If the gas has a temperature change of 100 ° C. Choose the correct answer by making the corresponding calculations or justifications for each of the following cases: The change in enthalpy in KJ / kg a) 30 b) 70 c) 100 d) Insufficient information The work done is in kJ...
An ideal gas (k=1.4, R=0.27 kJ/kg K) enters a steady, single inlet, single outlet compressor that is operating reversibly at 1 bar and 30 °C and exits at 5 bar. Find the specific work (W = .) if the compressor is operating isothermally and kinetic and potential energy changes are neglected. 0-188.47 kJ/kg O None of the choices are correct O-110.39 kJ/kg 0-131.73 kJ/kg 0-140.42 kJ/kg
Thermodynamics
1. Saturated liquid H20 at 16 MPa is fed into the boiler of a variant of a Carnot cycle (but simplified Rankin cycle) where the working fluid is not an ideal gas. Saturated H20 vapor is fed into the turbine of the same turbine. The condenser of this turbine is operated at 8 kPa. The mass flowrate of the H20 in this cycle is 7.2x103 kg/min. Draw the path of this process on T-s diagram. Estimate the thermal efficiency...
1. Superheated water steam at 5 bar and 360 C enters a turbine operating at steady state with a volume rate of 0.7 m3/s and expanded adiabatically to the exit state of 1 bar and 200 C, respectively. Kinetics and potential energy changes can be neglected. Determine: a) (2 pts) mass flow rate in kg/s (2 pts) power developed in kW (3 pts) total rate of entropy production in kW/K (4 pts) isentropic turbine efficiency
uestion l [use R= 0.287 kJ/kg K, c,-1.0035 kJ/kg K1 a) Air flowing at a rate of 1.6 kg/min is compressed by a 5 kW compressor under steady-state conditions, from 100 kPa and 17°C to 600 kPa and 167°C. During this process, some heat transfer takes place between the compressor and the surrounding medium at 17°C. Determine the rate of entropy change of air during this process, stating clearly any assumptions. (5 Marks)
(thermodynamics) i need help with questions 5,6,7
5 Consider a steam power plant that operates on a simple ideal Rankine cycle and has a net power output of 45MW. Steam enters the turbine at 7 MPa and 0Cand is cooed in the condenser at a pressure of 10 kPa by nuning cooling watr from a lake through the tubes of the condenser at a nte of 2000 kgs Show the cycle on a T-s diagam with respet to saturation lines,...
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