2.46 WP A gas contained in a piston-cylinder assembly undergoes two processes, A and B, between the same end states, 1 and 2, where P₁ = 1 bar, V₁ = 1 m³, U₁ = 400 kJ and p₂ = 10 bar, V₂ = 0.1 m³, U₂ = 450 kJ: Process A: Constant-volume process from state 1 to a pressure of 10 bar, followed by a constant-pressure process to state 2. Process B: Process from 1 to 2 during which the pressure- volume relation is pV = constant. Kinetic and potential effects can be ignored. For each of the processes A and B, (a) sketch the process on p-V coordinates, (b) evaluate the work, in kJ, and (c) evaluate the heat transfer, in kJ.

2.46 WP A gas contained in a piston-cylinder assembly undergoes two processes, A and B, between the same end states, 1 and 2, where P₁ = 1 bar, V₁ = 1 m³, U₁ = 400 kJ and p₂ = 10 bar, V₂ = 0.1 m³, U₂ = 450 kJ: Process A: Constant-volume process from state 1 to a pressure of 10 bar, followed by a constant-pressure process to state 2. Process B: Process from 1 to 2 during which the pressure- volume relation is pV = constant. Kinetic and potential effects can be ignored. For each of the processes A and B, (a) sketch the process on p-V coordinates, (b) evaluate the work, in kJ, and (c) evaluate the heat transfer, in kJ.

Automotive Technology: A Systems Approach (MindTap Course List)

6th Edition

ISBN:9781133612315

Author:Jack Erjavec, Rob Thompson

Publisher:Jack Erjavec, Rob Thompson

Chapter3: Basic Theories And Math

Section: Chapter Questions

Problem 2RQ: In what four states does matter exist? Cite examples of each.

See similar textbooks

Similar questions

2.33 Carbon monoxide gas (CO) contained within a piston- Process 1-2: Expansion from p, 5 bar, V = 0.2 m' to Process 2-3: Constant-volume heating from state 2 to state Process 3-1: Constant-pressure compression to the initial V, = 1 m'. during which the pressure-volume relationship is cylinder assembly undergoes three processes in series to pV = constant. 3, where p3 5 bar. %3D state. Sketch the processes in series on p-V coordinates and msi uate the work for each process, in kJ.
3) From an initial state where the pressure is p,, the temperature is T, and the volume is V1, water vapor contained in a piston-cylinder assembly undergoes each of the following processes: Process 1-2: Constant-temperature to p, = 2p, Process 1-3: Constant volume to p3 = 2p1 Process 1-4: Constant pressure to V4 = 2V1 Process 1-5: Constant temperature to V; = 2V, %3D On a p-V diagram, sketch each process, identify the work by an area on the diagram, and indicate whether the work is done by, or on, the water vapor.
Carbon dioxide (CO2) contained within a piston cylinder undergoes three processes in series: = p1 10 bar, V₁ = 0.25 m³, to V₂ = 2.3 m³ during Process 12: Expansion from which the pressure-volume relationship is pV = constant Process 23: Constant volume heating from state 2 to state 3 where p3 = 10 bar Process 31: Constant pressure compression to the initial state. Sketch (don't have to use a computer) the process in series on a pV diagram (p on y-axis, V on x-asix) and evaluate the moving boundary work for each process.
2. A gas undergoes a thermodynamic cycle consisting of the following processes:i) Process 1-2: Constant pressure p1 = 1.4 bar, V1=0.028 m3, W1-2=10.5 kJii) Process 2-3: Compression with pV=Constant, U3=U2iii) Process 3-1: Constant Volume, U1-U3 = -26.4 kJThere are no significant changes in KE and PEi) Sketch the cycle on a p-V diagramii) Calculate the network for the cycle in kJiii) Calculate the heat transfer for process 1-2iv) Show that ƩW = ƩQ
2.15 Air undergoes two processes in series! Process 1-2: polytropic compression, with n = 1.3, from pi= 100 kPa. v₁ = 0.04 m³/kg to 1/2 = 0.02 m³/kg Process 2-3: constant-pressure process to 3 = V₁ Sketch the processes on a p-v diagram and determine the total work per unit mass of air, in kJ/kg.
2.34 Carbon monoxide gas (CO) contained within a piston- cylinder assembly undergoes three processes in series: 1- Process 1-2: Constant pressure expansion at 5 bar from V₁ 0.2 m³ to V₂ = 1 m³. Process 2-3: Constant volume cooling from state 2 to state 3 where p3 1 bar. = Process 3-1: Compression from state 3 to the initial state during which the pressure-volume relationship is pV = constant. Sketch the processes in series on p-V coordinates and evaluate the work for each process, in kJ.
1Kg of water contained in a piston-cylinder assembly undergoes five processes in series as follows: Process 1-2: constant pressure heating at 10 bar from saturated vapor Process 2-3: constant volume cooling to P; = 5 bar and T; = 180°C Process 3-4: constant pressure compression to x=0.45 Process 4-5: constant volume heating to Ps = P1 Process 5-1: constant pressure heating to saturated vapor a. Sketch the above processes on both T-v and P-v diagrams b. Find quality at point 5, and the work done in each process
3.72 A piston-cylinder assembly contains 2 lb of water, initially at 100 lbf/in.2 and 400°F. The water undergoes two processes in series: a constant-pressure process followed by a constant- volume process. At the end of the constant-volume process, the temperature is 300°F and the water is a two-phase liquid-vapor mixture with a quality of 60%. Neglect kinetic and potential energy effects. (a) Sketch Tv and p-v diagrams showing the key states and the processes. (b) Determine the work and heat transfer for each process, all in Btu.
Q2/(A): what are the various types of open system ? B A particular substance undergoes a mechanically reversible process expanding from an initiat state of 20 bar to a final state of 8 bar. The path for the process is described by the equation: 0.036 Where P is in bar and v is in m. ifAu for the P= change of state is ( - 1400 I), Determine w, Q and AH?
Consider the following: 1. When gas is heated at constant volume, its pressure and temperature will decrease. P, = P. , Volume V, 3. Change in internal Energy is equals to change in heat transfer 4. The value of the work done is zero. Which of the above condition relates with isochoric process? Select one: O a. 1,2 and 4 only O b. 1 and 3 only O c. 3 and 4 only O d. 1, 2, 3 and 4 2. Pressure
4) Figure shows a gas contained in a vertical piston-cylinder assembly. The total mass of the piston (including shaft) is 100 kg. While the gas is slowly heated, the internal energy of the gas increases by 0.1 kJ, the potential energy of the piston-shaft combination increases by 0.2 kJ. The piston and cylinder are poor conductors, and friction between them is negligible. The local atmospheric pressure is 1 bar and approximate g as 10 m/s². The cross-sectional area of the piston is 0.01 m². Determine, (a) the work done by the gas, (b) the heat transfer to the gas, all in kJ. Patm = 1 bar Gas 0.01 m²
Q1. Considering the example of refrigerator as system, define and provide the example from the refrigerator system to each of the following: 1. Open system 2. Closed system 3. Independent and dependent property 4. Intensive and extensive property 5. Equilibrium Q2. Considering the example of automotive vehicle system (car), define and provide the example from the car system to each of the following: 1. Isobaric process 2. Isothermal process 3. Isochoric process 4. Adiabatic process 5. Steady state and unsteady state process