1kg of air at 20oC is contained in a cylinder at a pressure of 50 bar....
1kg of air at 20oC is contained in a cylinder at a pressure of 50 bar. A piston allows the air to expand to 2 bar. Calculate the work done by the piston if the expansion is:
i. isothermal,
ii. adiabatic.
iii. Sketch the two processes on a sketch of the P-V diagram.
iv. What assumptions are you making about the air?
Show all working clearly and give answers to a suitable degree of accuracy. Show all your working clearly and give your answers to a suitable degree of accuracy.
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1kg of air at 20oC is contained in a cylinder at a pressure of
50 bar....
1.Water vapor contained in a piston–cylinder assembly undergoes an isothermal expansion at 277°C from a pressure...
1.Water vapor contained in a piston–cylinder assembly undergoes an isothermal expansion at 277°C from a pressure of 5.1 bar to a pressure of 2.7 bar. Evaluate the work, in kJ/kg. 2.Nitrogen (N2) contained in a piston–cylinder arrangement, initially at 9.3 bar and 437 K, undergoes an expansion to a final temperature of 300 K, during which the pressure–volume relationship is pV1.1 = constant. Assuming the ideal gas model for the N2, determine the heat transfer in kJ/kg. 3.Argon contained in...
Air contained in an insulated piston-cylinder assembly, initially at 8 bar, 377 °C and a volume...
Air contained in an insulated piston-cylinder assembly, initially at 8 bar, 377 °C and a volume of 0.60 m3, expands to a pressure of 2 bar. Model the air as an ideal gas with constant specific heats. a. Sketch process on a p-v and T-s diagram. Clearly indicate accessible states allowed by 2nd Law. T V b. Determine the maximum work of the expanding air (both magnitude and direction). Justify using the laws of thermodynamics. c. If the actual work...
1) Heat is being transferred to 1 kg of H2O (initially at 1 bar and 20oC)...
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Please answer fast Saturated liquid at a pressure 200 bar is contained in a piston-cylinder system...
Please answer fast
Saturated liquid at a pressure 200 bar is contained in a piston-cylinder system at a volume of V 0.01 m3. The system undergoes a two-step process, which is the following: (1) A constant volume cooling process to a temperature of 200°C; and (2) A constant pressure expansion to 320°C following process 1. Determine the work and heat transfer for both processes and show the processes on p-v and t-v diagrams.
3.93 w Air contained in a piston-cylinder assembly undergoes two processes in series, as shown in...
3.93 w Air contained in a piston-cylinder assembly undergoes two processes in series, as shown in Fig. P3:93. Assuming ideal gas behavior for the air, determine the work and heat transfer for the overall process, each in kJ/kg. Isothermal process Ti = 300 K (bar) 1 °C 0.1 0.2 0.3 0.4 V (m) 0.5 0.6 FIGURE P3.93
1.Argon contained in a closed, rigid tank, initially at 62.3°C, 3.9 bar, and a volume of...
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1. A) Argon contained in a closed, rigid tank, initially at 36.3°C, 2.8 bar, and a...
1. A) Argon contained in a closed, rigid tank, initially at 36.3°C, 2.8 bar, and a volume of 1.4 m3, is heated to a final pressure of 9.9 bar. Assuming the ideal gas model with k = 1.53 for the argon, determine the heat transfer, in kJ. B) Nitrogen (N2) contained in a piston–cylinder arrangement, initially at 6 bar and 435 K, undergoes an expansion to a final temperature of 300 K, during which the pressure–volume relationship is pV1.5 =...
Consider the expansion of air, which is contained in a piston-cylinder assembly, through two different processes:...
Consider the expansion of air, which is contained in a piston-cylinder assembly, through two different processes: (A) adiabatic; (B) non-adiabatic, both starting at State 1 and ending at State 2. Which of the following relationships is certainly incorrect? O (W+Q), -2]A < [(W+Q)1 – 2]B O [(W-Q)1–2]A [(W-Q)1-21B O (Q1-2)A < (Q1-2)B O(W1-2)< (W1-2)
Air in a piston-cylinder assembly executes a Carnot power cycle (4 internally reversible processes, shown in...
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*Problem 3.094 SI Air contained in a piston-cylinder assembly undergoes the power cycle shown in the...
*Problem 3.094 SI Air contained in a piston-cylinder assembly undergoes the power cycle shown in the figure below 3.0 Isothermal process (bar) 1.4 0 0 1.0 2.142857142857 v (m3/kg) Assuming ideal gas behavior for the air, evaluate the thermal efficiency of the cycle. 1%
Air contained in an insulated piston-cylinder assembly, initially at 8 bar, 377 °C and a volume of 0.60 m3, expands to a pressure of 2 bar. Model the air as an ideal gas with constant specific heats. a. Sketch process on a p-v and T-s diagram. Clearly indicate accessible states allowed by 2nd Law. T V b. Determine the maximum work of the expanding air (both magnitude and direction). Justify using the laws of thermodynamics. c. If the actual work...
Please answer fast
Saturated liquid at a pressure 200 bar is contained in a piston-cylinder system at a volume of V 0.01 m3. The system undergoes a two-step process, which is the following: (1) A constant volume cooling process to a temperature of 200°C; and (2) A constant pressure expansion to 320°C following process 1. Determine the work and heat transfer for both processes and show the processes on p-v and t-v diagrams.
3.93 w Air contained in a piston-cylinder assembly undergoes two processes in series, as shown in Fig. P3:93. Assuming ideal gas behavior for the air, determine the work and heat transfer for the overall process, each in kJ/kg. Isothermal process Ti = 300 K (bar) 1 °C 0.1 0.2 0.3 0.4 V (m) 0.5 0.6 FIGURE P3.93
Consider the expansion of air, which is contained in a piston-cylinder assembly, through two different processes: (A) adiabatic; (B) non-adiabatic, both starting at State 1 and ending at State 2. Which of the following relationships is certainly incorrect? O (W+Q), -2]A < [(W+Q)1 – 2]B O [(W-Q)1–2]A [(W-Q)1-21B O (Q1-2)A < (Q1-2)B O(W1-2)< (W1-2)
Air in a piston-cylinder assembly executes a Carnot power cycle (4 internally reversible processes, shown in the figure below). The isothermal expansion and compression processes occur at TH 1400 K and Tc-350 K, respectively. The pressure at the beginning and end of the isothermal compression are p4-100 kPa and pi - 500 kPa, respectively Assume the ideal gas model for the air: ai 0.717 J/g.K Mair- 28.97 g/mol kpv.air 1.4 R 8.314J /(mol K) Adiabatic Isothermal expansion Adiabatic compression Gas...
*Problem 3.094 SI Air contained in a piston-cylinder assembly undergoes the power cycle shown in the figure below 3.0 Isothermal process (bar) 1.4 0 0 1.0 2.142857142857 v (m3/kg) Assuming ideal gas behavior for the air, evaluate the thermal efficiency of the cycle. 1%
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