Fundamentals Of Engineering Thermodynamics
9th Edition
ISBN: 9781119391388
Author: MORAN, Michael J., SHAPIRO, Howard N., Boettner, Daisie D., Bailey, Margaret B.
Publisher: Wiley,
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Chapter 1, Problem 1.17CU
To determine
The objective is to explain the process
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Initially contains Air:
P1 = 30 lbf/in^2
T1 = 540 °F
V1 = 4 ft^3
Second phase of process involving Air to a final state:
P2 = 20 lbf/in^2
V2 = 4.5 ft^3
Wheel transfers energy TO the air by WORK at 1 Btu.
Energy transfers TO the air by HEAT at 12 Btu.
Ideal Gas Behavior.
Wpw
=-1 Btu
Ima
Determine whether the piston's work is done ON the system or BY
the system.
Q = -12 Btu
Air
Wpist
= ?
Initially, p₁ = 30 lbf/in.², T₁ = 540°F, V₁ = 4 ft³.
Finally, p2 = 20 lbf/in.², V₂ = 4.5 ft³.
Initially contains Air:
P1 = 30 lbf/in^2
T1 = 540 °F
V1 = 4 ft^3
Second phase of process involving Air to a final state:
P2 = 20 lbf/in^2
V2 = 4.5 ft^3
Wheel transfers energy TO the air by WORK at 1 Btu.
Energy transfers TO the air by HEAT at 12 Btu.
Ideal Gas Behavior.
Wpw
=-1 Btu
Ima
Determine whether the propeller's work is done BY the system or
On the system.
Q = -12 Btu
Air
Wpist
= ?
Initially, p₁ = 30 lbf/in.², T₁ = 540°F, V₁ = 4 ft³.
Finally, p2 = 20 lbf/in.², V₂ = 4.5 ft³.
* Your answer is incorrect.
A gas undergoes a process in a piston-cylinder assembly during which the pressure-specific volume relation is pv¹.2 = constant.
The mass of the gas is 0.4 lb and the following data are known: p₁ = 160 lbf/in.², V₁ = 1 ft³, and p2 = 300 lbf/in.² During the process,
heat transfer from the gas is 2.1 Btu. Kinetic and potential energy effects are negligible. Determine the change in specific internal
energy of the gas, in Btu/lb.
Δu = i | 76.53
Btu/lb
Chapter 1 Solutions
Fundamentals Of Engineering Thermodynamics
Ch. 1 - Prob. 1.2ECh. 1 - Prob. 1.3ECh. 1 - Prob. 1.4ECh. 1 - Prob. 1.5ECh. 1 - Prob. 1.6ECh. 1 - Prob. 1.7ECh. 1 - Prob. 1.8ECh. 1 - Prob. 1.9ECh. 1 - Prob. 1.10ECh. 1 - Prob. 1.11E
Ch. 1 - Prob. 1.12ECh. 1 - Prob. 1.13ECh. 1 - Prob. 1.14ECh. 1 - Prob. 1.1CUCh. 1 - Prob. 1.2CUCh. 1 - Prob. 1.3CUCh. 1 - Prob. 1.4CUCh. 1 - Prob. 1.5CUCh. 1 - Prob. 1.6CUCh. 1 - Prob. 1.7CUCh. 1 - Prob. 1.8CUCh. 1 - Prob. 1.9CUCh. 1 - Prob. 1.10CUCh. 1 - Prob. 1.11CUCh. 1 - Prob. 1.12CUCh. 1 - Prob. 1.13CUCh. 1 - Prob. 1.14CUCh. 1 - Prob. 1.15CUCh. 1 - Prob. 1.16CUCh. 1 - Prob. 1.17CUCh. 1 - Prob. 1.18CUCh. 1 - Prob. 1.19CUCh. 1 - Prob. 1.20CUCh. 1 - Prob. 1.21CUCh. 1 - Prob. 1.22CUCh. 1 - Prob. 1.23CUCh. 1 - Prob. 1.24CUCh. 1 - Prob. 1.25CUCh. 1 - Prob. 1.26CUCh. 1 - Prob. 1.27CUCh. 1 - Prob. 1.28CUCh. 1 - Prob. 1.29CUCh. 1 - Prob. 1.30CUCh. 1 - Prob. 1.31CUCh. 1 - Prob. 1.32CUCh. 1 - Prob. 1.33CUCh. 1 - Prob. 1.34CUCh. 1 - Prob. 1.35CUCh. 1 - Prob. 1.36CUCh. 1 - Prob. 1.37CUCh. 1 - Prob. 1.38CUCh. 1 - Prob. 1.39CUCh. 1 - Prob. 1.40CUCh. 1 - Prob. 1.41CUCh. 1 - Prob. 1.42CUCh. 1 - Prob. 1.43CUCh. 1 - Prob. 1.44CUCh. 1 - Prob. 1.45CUCh. 1 - Prob. 1.46CUCh. 1 - Prob. 1.47CUCh. 1 - Prob. 1.48CUCh. 1 - Prob. 1.49CUCh. 1 - Prob. 1.50CUCh. 1 - Prob. 1.51CUCh. 1 - Prob. 1.52CUCh. 1 - Prob. 1.53CUCh. 1 - Prob. 1.54CUCh. 1 - Prob. 1.55CUCh. 1 - Prob. 1.56CUCh. 1 - Prob. 1.57CUCh. 1 - Prob. 1.58CUCh. 1 - Prob. 1.4PCh. 1 - Prob. 1.5PCh. 1 - Prob. 1.6PCh. 1 - Prob. 1.7PCh. 1 - Prob. 1.8PCh. 1 - Prob. 1.9PCh. 1 - Prob. 1.10PCh. 1 - Prob. 1.11PCh. 1 - Prob. 1.12PCh. 1 - Prob. 1.13PCh. 1 - Prob. 1.14PCh. 1 - Prob. 1.16PCh. 1 - Prob. 1.17PCh. 1 - Prob. 1.18PCh. 1 - Prob. 1.19PCh. 1 - Prob. 1.20PCh. 1 - Prob. 1.21PCh. 1 - Prob. 1.22PCh. 1 - Prob. 1.23PCh. 1 - Prob. 1.24PCh. 1 - Prob. 1.25PCh. 1 - Prob. 1.26PCh. 1 - Prob. 1.27PCh. 1 - Prob. 1.28PCh. 1 - Prob. 1.29PCh. 1 - Prob. 1.30PCh. 1 - Prob. 1.31PCh. 1 - Prob. 1.32PCh. 1 - Prob. 1.33PCh. 1 - Prob. 1.34PCh. 1 - Prob. 1.35PCh. 1 - Prob. 1.36PCh. 1 - Prob. 1.37PCh. 1 - Prob. 1.38PCh. 1 - Prob. 1.39PCh. 1 - Prob. 1.40PCh. 1 - Prob. 1.41PCh. 1 - Prob. 1.42PCh. 1 - Prob. 1.43PCh. 1 - Prob. 1.44PCh. 1 - Prob. 1.45PCh. 1 - Prob. 1.46PCh. 1 - Prob. 1.47PCh. 1 - Prob. 1.48PCh. 1 - Prob. 1.49P
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- estion Completion Status: QUESTION 26 Carbon dioxide (molar mass 44 kg/kmol) expands reversibly in a perfectly thermally insulated cylinder from 3.7 bar, 220 °C to a volume of 0 085 m If the initial volume OCcupied was 0 02 m calculate the gas constant to 3 decimal places. Assume nitrogen to be a perfect gas and take cv = 0 63 k J/kg K QUESTION 27 High-P Low-P Lurharrow_forwardInitially contains Air: P1 = 30 lbf/in^2 T1 = 540 °F V1 = 4 ft^3 Second phase of process involving Air to a final state: P2 = 20 lbf/in^2 V2 = 4.5 ft^3 Wheel transfers energy TO the air by WORK at 1 Btu. Energy transfers TO the air by HEAT at 12 Btu. Ideal Gas Behavior. Find T2 in Radians. Wpw =-1 Btu Ima Q = -12 Btu Air Wpist = ? Initially, p₁ = 30 lbf/in.², T₁ = 540°F, V₁ = 4 ft³. Finally, p2 = 20 lbf/in.², V₂ = 4.5 ft³.arrow_forward4) 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 m²arrow_forward
- 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 processarrow_forward* Your answer is incorrect. A piston-cylinder assembly contains 0.7 lb of propane. The propane expands from an initial state where p₁ = 60 lbf/in.² and T₁ = 70°F to a final state where p₂ = 10 lbf/in.² During the process, the pressure and specific volume are related by pv² = constant. Determine the energy transfer by work, in Btu. W = i 3.123 Btuarrow_forward2.33 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.arrow_forward
- 3. 4.50 mol of N2 gas (Cym = 20.6 J mol K') is enclosed in a piston-cylinder assembly (closed system) and undergoes the cycle depicted graphically below. Assuming N2 behaves as an ideal gas and Cm is temperature independent over the given temperature range, calculate q, w, AU, and AH for each segment. Label each segment with the type of process. Note: segment 2→3 follows the relationship PV = nRT . 1.) 20.0 L 2.) 50.0 L 3.) 5.00 bar T= T; = T, V (L) P (bar)arrow_forwardCarbon 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.arrow_forward1) Air contained in a piston-cylinder assembly undergoes the power cycle shown in the figure. Assuming ideal gas behavior for the air, evaluate the thermal efficiency of the cycle. Isothermal process (bar) 3 5 v (m³/kg)arrow_forward
- Initially contains Air: P1 = 30 lbf/in^2 T1 = 540 °F V1 = 4 ft^3 Second phase of process involving Air to a final state: P2 = 20 lbf/in^2 V2 = 4.5 ft^3 Wheel transfers energy TO the air by WORK at 1 Btu. Energy transfers TO the air by HEAT at 12 Btu. Ideal Gas Behavior. Is the PE and KE neglected? Wpw =-1 Btu Ima Q = -12 Btu Air Wpist = ? Initially, p₁ = 30 lbf/in.², T₁ = 540°F, V₁ = 4 ft³. Finally, p2 = 20 lbf/in.², V₂ = 4.5 ft³.arrow_forward4. One kg of water at 47.8° C is heated under a constant pressure of 14 bar until it is converted into steam with 110° C of superheat. Determine the quantity of heat supplied during superheating and the total heat of superheated steam. Assume c, = 2.1 kJ/kg K. [Ans. 201 kJ: 2818 kJ] certain amount of team ir pro feration 08 Dwarrow_forwardplease use thermodynamic principlesarrow_forward
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