A mole of air occupies 5.0 L at 396 ◦C in a cylinder with a piston...
A mole of air occupies 5.0 L at 396 ◦C in a cylinder with a piston that exerts constant force. 4.4 kJ of heat is added. Air molecules are mostly diatomic. Use the values of CV and CP for an ideal gas rather than values from the internet or the textbook.
Determine the (a) new volume, and (b) change in internal energy. If the piston is instead held in place at 5.0 L, determine the (c) new pressure.
(a) 6.0, 7.0 L (b) 3.0, 5.0 kJ (c) 1.10 × 106 , 1.50 × 106 Pa]
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A mole of air occupies 5.0 L at 396 ◦C in a cylinder with a
piston...
A gas in a cylinder piston system occupies V, - 15 mºat P. = 220 kPa...
A gas in a cylinder piston system occupies V, - 15 mºat P. = 220 kPa and T, -20°C. Then, the gas undergoes a polytropic compression process until its temperature becomes T, 300'C. The entropy change of the gas during this process is AS - -1.7626 kJ/K, (AS-S.-5.). By assuming ideal gas (R = 0.3 kJ/kg.K. cp = 0.8 kJ/kg.K. cv = 0.5 kJ/kg.K), determine: 3pt) the mass of the gas, m (kg) = (9pt) the work transfer, W (kl)...
An air-standard cycle is executed within a closed piston–cylinder system, and it consists of the following...
An air-standard cycle is
executed within a closed piston–cylinder system, and it consists of
the following three processes: 1–2 V = Constant heat addition from
100 kPa and 30°C to 850 kPa 2–3 Isothermal expansion until V3 =
8.5V2 3–1 P = Constant heat rejection to the initial state Assume
air has constant properties with cv = 0.718 kJ/kg·K, cp = 1.005
kJ/kg·K, R = 0.287 kJ/kg·K, and k = 1.4.
Required information An air-standard cycle is executed within a...
A vertical piston-cylinder contains 1.5 lbm of air. The piston has a mass of 6 Ibm...
A vertical piston-cylinder contains 1.5 lbm of air. The piston has a mass of 6 Ibm and a face area of 10 in2. The air initially occupies a volume of 30.6 in3 and has a specific internal energy of 225 BTU/lbm. The atmosphere exerts a pressure of 1 atm on the top of the piston. Heat transfer occurs slowly during the process between the air in the piston and the surroundings, and the volume of the air decreases to 15.0...
Required information An air-standard cycle is executed within a closed piston-cylinder system, and it consists of...
Required information An air-standard cycle is executed within a closed piston-cylinder system, and it consists of the following three processes: 1-2 V Constant heat addition from 100 kPa and 34°C to 850 kPa 2-3 Isothermal expansion until V3-8.5V2 3-1 P Constant heat rejection to the initial state Assume air has constant properties with cv 0.718 kJ/kg-K, Cp 1.005 kJ/kg-K, R- 0.287 kJ/kg-K, and k-1.4 Determine the cycle thermal efficiency. The cycle thermal efficiency is 10.266
Thermodynamics question Initially, 0.05kg of air is contained in a piston cylinder device at 200 °C...
Thermodynamics question
Initially, 0.05kg of air is contained in a piston cylinder device at 200 °C and 1.6 MPa. The air then expands at constant temperature to a pressure of 0.4 MPa. Assume the process occurs slowly enough that the acceleration of the piston can be neglected. The ambient pressure is 101.35kPa. (i) Determine the work (kJ) performed bt the air in the cylinder on the piston. (ii) Determine the work (kJ) performed by the piston on the ambient environment....
Air contained in a piston-cylinder assembly, initially at 2 bar, 200 K, and a volume of 1 L, unde...
Air contained in a piston-cylinder assembly, initially at 2 bar, 200 K, and a volume of 1 L, undergoes a process to a final state where the pressure is 8 bar and the volume is 2 L During the process, the pressure-volume relationship is linear. Assuming the ideal gas model for the air, determine the work and heat transfer, each in kJ. 4.
Air contained in a piston-cylinder assembly, initially at 2 bar, 200 K, and a volume of 1...
1.06 mol of an ideal gas in a piston-cylinder initially occupies 9.0 L at 320 °C...
1.06 mol of an ideal gas in a piston-cylinder initially occupies 9.0 L at 320 °C and constant pressure. Part A Suppose the temperature increases to 399 °C. Calculate the work in )) done on or by the gas. Express your answer using 3 significant figures. ΑΣΦ 2 ? w= Submit Previous Answers Request Answer
Air goes through a polytropic process in a piston/cylinder setup. The polytropic index is n. The...
Air goes through a polytropic process in a piston/cylinder setup. The polytropic index is n. The process starts at P1 kPa, T1 oC, and ends with a pressure of P2 kPa. Answer Questions 6-8 about this process, considering the given information in Question 6. Assume air to be an ideal gas. Let, n=1.5 P1=2.3 MPa T1= 8.9 ×102 °C P2=2.1 ×102 kPa Cp = 1.004 kJ/kg-K, Cv = 0.717 kJ/kg-K, R = 0.287 kJ/kg-K Find the final temperature, in oC...
1/2 Question 3 A piston-cylinder assembly fitted with a paddle wheel contains air, initially at 38°C,...
1/2 Question 3 A piston-cylinder assembly fitted with a paddle wheel contains air, initially at 38°C, 125 kPa, and a volume of 0.02 mº. Energy in the amount of 1.8 kJ is transferred to the air by the paddle wheel. The volume of the air in the piston-cylinder increases to 0.05 mº at constant pressure. If the heat transfer between the air and its surroundings can be ignored, determine (a) the mass of the air in the piston-cylinder (b) the...
Problem 1: A piston-cylinder assembly contains 0.5 m3 of air at 1 bar and 20 C....
Problem 1: A piston-cylinder assembly contains 0.5 m3 of air at 1 bar and 20 C. The piston compresses the air until the volume of air becomes 0.1 m3. If PV14constant during this process and changes in kinetic and potential energy are negligible, determine (a) The final pressure of air, in bar (b) The work, in kJ (c) The heat transfer, in kJ rn
A gas in a cylinder piston system occupies V, - 15 mºat P. = 220 kPa and T, -20°C. Then, the gas undergoes a polytropic compression process until its temperature becomes T, 300'C. The entropy change of the gas during this process is AS - -1.7626 kJ/K, (AS-S.-5.). By assuming ideal gas (R = 0.3 kJ/kg.K. cp = 0.8 kJ/kg.K. cv = 0.5 kJ/kg.K), determine: 3pt) the mass of the gas, m (kg) = (9pt) the work transfer, W (kl)...
An air-standard cycle is
executed within a closed piston–cylinder system, and it consists of
the following three processes: 1–2 V = Constant heat addition from
100 kPa and 30°C to 850 kPa 2–3 Isothermal expansion until V3 =
8.5V2 3–1 P = Constant heat rejection to the initial state Assume
air has constant properties with cv = 0.718 kJ/kg·K, cp = 1.005
kJ/kg·K, R = 0.287 kJ/kg·K, and k = 1.4.
Required information An air-standard cycle is executed within a...
A vertical piston-cylinder contains 1.5 lbm of air. The piston has a mass of 6 Ibm and a face area of 10 in2. The air initially occupies a volume of 30.6 in3 and has a specific internal energy of 225 BTU/lbm. The atmosphere exerts a pressure of 1 atm on the top of the piston. Heat transfer occurs slowly during the process between the air in the piston and the surroundings, and the volume of the air decreases to 15.0...
Required information An air-standard cycle is executed within a closed piston-cylinder system, and it consists of the following three processes: 1-2 V Constant heat addition from 100 kPa and 34°C to 850 kPa 2-3 Isothermal expansion until V3-8.5V2 3-1 P Constant heat rejection to the initial state Assume air has constant properties with cv 0.718 kJ/kg-K, Cp 1.005 kJ/kg-K, R- 0.287 kJ/kg-K, and k-1.4 Determine the cycle thermal efficiency. The cycle thermal efficiency is 10.266
Thermodynamics question
Initially, 0.05kg of air is contained in a piston cylinder device at 200 °C and 1.6 MPa. The air then expands at constant temperature to a pressure of 0.4 MPa. Assume the process occurs slowly enough that the acceleration of the piston can be neglected. The ambient pressure is 101.35kPa. (i) Determine the work (kJ) performed bt the air in the cylinder on the piston. (ii) Determine the work (kJ) performed by the piston on the ambient environment....
Air contained in a piston-cylinder assembly, initially at 2 bar, 200 K, and a volume of 1 L, undergoes a process to a final state where the pressure is 8 bar and the volume is 2 L During the process, the pressure-volume relationship is linear. Assuming the ideal gas model for the air, determine the work and heat transfer, each in kJ. 4.
Air contained in a piston-cylinder assembly, initially at 2 bar, 200 K, and a volume of 1...
1.06 mol of an ideal gas in a piston-cylinder initially occupies 9.0 L at 320 °C and constant pressure. Part A Suppose the temperature increases to 399 °C. Calculate the work in )) done on or by the gas. Express your answer using 3 significant figures. ΑΣΦ 2 ? w= Submit Previous Answers Request Answer
1/2 Question 3 A piston-cylinder assembly fitted with a paddle wheel contains air, initially at 38°C, 125 kPa, and a volume of 0.02 mº. Energy in the amount of 1.8 kJ is transferred to the air by the paddle wheel. The volume of the air in the piston-cylinder increases to 0.05 mº at constant pressure. If the heat transfer between the air and its surroundings can be ignored, determine (a) the mass of the air in the piston-cylinder (b) the...
Problem 1: A piston-cylinder assembly contains 0.5 m3 of air at 1 bar and 20 C. The piston compresses the air until the volume of air becomes 0.1 m3. If PV14constant during this process and changes in kinetic and potential energy are negligible, determine (a) The final pressure of air, in bar (b) The work, in kJ (c) The heat transfer, in kJ rn
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