It is required to find the theoretical volume of air at 20°C and 100 kPa absolute...
It is required to find the theoretical volume of air at 20°C and 100 kPa absolute pressure to bum one kilogram of Franklin County coal. The ultimate analysis of coal as-fired is as follows: C = 65.65 %; O = 18.61%; M = 3%H = 5.87%; S = 1.51%; Ash = 5.36%
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The theoretical volume of air required to burn 1kg franklin coubty coal is 6.106 m3
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It is required to find the theoretical volume of air at 20°C and
100 kPa absolute...
At sea level, water boils at 100 °C, and the absolute atmospheric pressure is 101 kPa....
At sea level, water boils at 100 °C, and the absolute atmospheric pressure is 101 kPa. As the atmospheric pressure above water decreases, the temperature required for boiling also decreases, at a rate of 3.1 kPa per "C. For the system shown below: a. What is the absolute atmospheric pressure at an elevation of 4100 m, assuming a constant unit weight of air of 11.80 N/m3? b. What will be the boiling temperature for water at this elevation? Elev. =...
4) Volume 2.5 m^3 air in a rigid tank with initial pressure 100 kPa and temperature...
4) Volume 2.5 m^3 air in a rigid tank with initial pressure 100 kPa and temperature 25°C There. It is applied to the tank feed line by a valve. Pressure of air flowing through the supply line 600 kPa and temperature is 25°C. By opening the valve, the pressure of the air in the tank is air entering the tank until it is equal to the pressure of the air It is closed. A thermometer placed in the tank lasts...
An ideal Brayton power generation cycle draws in air at 100 kPa and 20 °C. The...
An ideal Brayton power generation cycle draws in air at 100 kPa and 20 °C. The compressor increases the pressure to 500 kPa. The burner adds heat equal to 500 kJ/kg. You can use air standard analysis and assume constant specific heats. (a) (5 pts) find the temperature after the compressor (b) (5 pts) find the specific compressor work (c) (5 pts) find the temperature after the burner (d) (5 pts) find the turbine work (e) (5 pts) find the...
9 Air at 20 "C. 100 kPa and a relative humidity of 90% exists in a...
9 Air at 20 "C. 100 kPa and a relative humidity of 90% exists in a room having 3m x 3m x 3m dimensions. Determine 1. the partial pressure (kPa) of dry air II. the specific humidity (g/kEda) III the enthalpy per unit mass of the dry air (ki/kedal (At 30 °C, Psar 4.25 kPa) (For dry air R-0.287) a) (1) 55 (II) 65 (III) 77 b) (0) 3.9 (II) 20.4 (III) 68.5 (1 93 (II) 21.8 (III) 95.2 d...
J. An adiabatie gas turbine espands air at 1300 kPa and 500P C to 100 kPa and 127"C Au ers turbine through a 02-...
J. An adiabatie gas turbine espands air at 1300 kPa and 500P C to 100 kPa and 127"C Au ers turbine through a 02-m opening with an average velocity of 40 m/s, and exhausts through a 1-m opening Detormine (a) the mass fnow rate of air through the turbine and (b) the power produced by the turbine For air, take the ideal gas constant and specific heat value at constant pressure as o Yue Determine (a) the mass flow rate...
Given: Air at 20 C and 100 kPa enters the first stage, and it exits the third stage at 6400 kPa. ...
Given: Air at 20 C and 100 kPa enters the first stage, and it exits the third stage at 6400 kPa. An inter-cooler is used to cool the air between the stages back to 20°C. The compression work per unit mass of air is γ-1 where γ is the specific heat ratio, R is the gas constant, subscript "i" denotes the initial (atmospheric) conditions, and subscript "o" signifies the exiting conditions. Find: intermediate pressures so that the total work is...
(20%) Q2. A piston-cylinder assembly initially has 100 kPa pressure and 2 liters of air at...
(20%) Q2. A piston-cylinder assembly initially has 100 kPa pressure and 2 liters of air at 25°C. The air is then compressed to 600 kPa pressure and 150°C temperature. Useful work input for compression is 1.2 kJ. Assuming that the ambient pressure and temperature are 100 kPa and 25°C respectively, calculate a) the exergy of the air in the first and last states, b) the minimum work required for the compression process, c) the second law efficiency of the state...
Problem 1 A Brayton-cycle power plant takes in air at 100 kPa and 26.7°C. Compression in two stag...
please solve by exact analysis
Problem 1 A Brayton-cycle power plant takes in air at 100 kPa and 26.7°C. Compression in two stages with intercooling, and each stage has a pressure ratio of 2.38 and an efficiency of 84%, with intercooling to 26.7°C The maximum temperature of the cycle is 676.7°C Turbine efficiency is 82%. The turbine and compressor are assumed adiabatic. A regenerator heats the compressed air to 326.7°C before sending it to the combustor. Calculate (a) the back...
A diatomic gas is at a pressure of 100 kPa, 500 cm3 and 20 ° C...
A diatomic gas is at a pressure of 100 kPa, 500 cm3 and 20 ° C (point A), it is carried through the following processes. • Compresses adiabatically with a compression ratio equal to 6 (ie VA / VB = 6). • Then it is heated at constant volume until reaching 1000 K. • Then it expands adiabatically until it reaches the original volume. • Finally it is cooled in a constant volume until reaching the original state. Calculate cycle...
Steam Generator air (inlet) - 320°C P. = 100 kPa th =0.5 kg/s heat exchanger -...
Steam Generator air (inlet) - 320°C P. = 100 kPa th =0.5 kg/s heat exchanger - water (inlet) T = 20°C Pw = 100 kPa m = 0.025 kg/s Problem sketch Solve with EES. Document all necessary balances The problem sketch illustrates a heat exchanger in which hot air is used to generate steam. Air enters the heat exchanger at 1a, in = 320C, Pa = 100 kPa, and ma -0.5 kg/s. Model air as an ideal gas with constant...
At sea level, water boils at 100 °C, and the absolute atmospheric pressure is 101 kPa. As the atmospheric pressure above water decreases, the temperature required for boiling also decreases, at a rate of 3.1 kPa per "C. For the system shown below: a. What is the absolute atmospheric pressure at an elevation of 4100 m, assuming a constant unit weight of air of 11.80 N/m3? b. What will be the boiling temperature for water at this elevation? Elev. =...
4) Volume 2.5 m^3 air in a rigid tank with initial pressure 100 kPa and temperature 25°C There. It is applied to the tank feed line by a valve. Pressure of air flowing through the supply line 600 kPa and temperature is 25°C. By opening the valve, the pressure of the air in the tank is air entering the tank until it is equal to the pressure of the air It is closed. A thermometer placed in the tank lasts...
An ideal Brayton power generation cycle draws in air at 100 kPa and 20 °C. The compressor increases the pressure to 500 kPa. The burner adds heat equal to 500 kJ/kg. You can use air standard analysis and assume constant specific heats. (a) (5 pts) find the temperature after the compressor (b) (5 pts) find the specific compressor work (c) (5 pts) find the temperature after the burner (d) (5 pts) find the turbine work (e) (5 pts) find the...
9 Air at 20 "C. 100 kPa and a relative humidity of 90% exists in a room having 3m x 3m x 3m dimensions. Determine 1. the partial pressure (kPa) of dry air II. the specific humidity (g/kEda) III the enthalpy per unit mass of the dry air (ki/kedal (At 30 °C, Psar 4.25 kPa) (For dry air R-0.287) a) (1) 55 (II) 65 (III) 77 b) (0) 3.9 (II) 20.4 (III) 68.5 (1 93 (II) 21.8 (III) 95.2 d...
J. An adiabatie gas turbine espands air at 1300 kPa and 500P C to 100 kPa and 127"C Au ers turbine through a 02-m opening with an average velocity of 40 m/s, and exhausts through a 1-m opening Detormine (a) the mass fnow rate of air through the turbine and (b) the power produced by the turbine For air, take the ideal gas constant and specific heat value at constant pressure as o Yue Determine (a) the mass flow rate...
Given: Air at 20 C and 100 kPa enters the first stage, and it exits the third stage at 6400 kPa. An inter-cooler is used to cool the air between the stages back to 20°C. The compression work per unit mass of air is γ-1 where γ is the specific heat ratio, R is the gas constant, subscript "i" denotes the initial (atmospheric) conditions, and subscript "o" signifies the exiting conditions. Find: intermediate pressures so that the total work is...
(20%) Q2. A piston-cylinder assembly initially has 100 kPa pressure and 2 liters of air at 25°C. The air is then compressed to 600 kPa pressure and 150°C temperature. Useful work input for compression is 1.2 kJ. Assuming that the ambient pressure and temperature are 100 kPa and 25°C respectively, calculate a) the exergy of the air in the first and last states, b) the minimum work required for the compression process, c) the second law efficiency of the state...
please solve by exact analysis
Problem 1 A Brayton-cycle power plant takes in air at 100 kPa and 26.7°C. Compression in two stages with intercooling, and each stage has a pressure ratio of 2.38 and an efficiency of 84%, with intercooling to 26.7°C The maximum temperature of the cycle is 676.7°C Turbine efficiency is 82%. The turbine and compressor are assumed adiabatic. A regenerator heats the compressed air to 326.7°C before sending it to the combustor. Calculate (a) the back...
Steam Generator air (inlet) - 320°C P. = 100 kPa th =0.5 kg/s heat exchanger - water (inlet) T = 20°C Pw = 100 kPa m = 0.025 kg/s Problem sketch Solve with EES. Document all necessary balances The problem sketch illustrates a heat exchanger in which hot air is used to generate steam. Air enters the heat exchanger at 1a, in = 320C, Pa = 100 kPa, and ma -0.5 kg/s. Model air as an ideal gas with constant...
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