Chapter 6, Problem 6.86P

FUND OF ENG THERMODYN(LLF)+WILEYPLUS

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Chapter 6, Problem 6.85P

Chapter 6, Problem 6.87P

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Topic: Ideal gas process Instructions: Answer the following review questions and show complete solutions. *please write legibly. Thank you

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awuIs 2 kg of air undergoes a power cycle undergocs a power cycle consisting of the following processes: Process 1-2: Constant-temperature expansion from p, = 4 bar, v, = 1 m³ /kg, to p2 = 2 bar, v2 = 2 m3/kg. Process 2-3: Constant-pressure compression to T3 = 696.9 K. Process 3-1: Constant-volume heating to state 1. Assume ideal gas behavior and neglect kinetic and potential energy effects. Show that T; = 1393.7 K and find T Sketch the cycle on a T-v diagram and label the states. Find the work done and heat transferred during cach process to complete this chart: b C. Process W (kJ) Q (kJ) iti 1-2 2-3 3-1 TOTAL Find the thermal efficiency of the cycle. For an energy balance on the entire cycle (1-2-3-1), what should the change in system energy be? Does that hold in this case? Add a Caption Pedro Castaño shared with you > Wednesday • Feb 23, 2022•7:24 PM Adjust IMG_7188 Apple iPhone 12 Pro Max НEIF Wide Camera – 26 mm f1.6 3 MP • 1914 × 1728 • 3.5 MB i
2. thermodynamics
1.
Argon (molar mass 40 kg/kmol) compresses reversibly in an adiabatic system from 5 bar, 25 °C to a volume of 0.2 m If the initial volume occupied was 0.9 m calculate the final pressure in bar to 2 decimal places.. Assume nitrogen to be a perfect gas and take cv 0.3122kJ/kgK. Question 12 of 84 A Moving to another questlon will save this response.
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. Determine the energy balance in simplest form. 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.
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.
Question #2 For the following processes, find the changes in h as appropriate. The initial state pressure is p1 = 0.5 MPa. the final state is 2. a. constant volume : v1 = 0.3 m3/kg, p2 = 0.3 MPa; b. constant entropy : s1 = 6.3 kJ/kg K, p2 = 0.15 MPa; c. constant volume : h1 = 2500 kJ/kg, p2 = 0.2 MPa; d. constant enthalpy : s1 = 6.4 kJ/kg K, p2 = 0.2 MPa;
One-quarter Ibmol of oxygen gas (O₂) undergoes a process from p₁ = 20 lbf/in², T₁ = 500°R to p2 = 150 lbf/in². For the process W = -500 Btu and Q = -177.5 Btu. Assume the oxygen behaves as an ideal gas. Determine T2, in °R, and the change in entropy, in Btu/°R.
please help with this question, from thermodynamics A quantity of a certain perfect gas is compressed from an initial state of 0.084 m3, 1 bar to a final state of 0.034 m3, 3.7 bar. The specific heat at constant volume is 0.724 kJ/kg K, and the specific heat at constant pressure is 1.02 kJ/kg K. The observed temperature rise is 139 K. Calculate the increase of internal energy of the gas to two decimal places with the SI unit.
3.
pls answer completely thanks
A piston-cylinder assembly contains nitrogen gas with a mass of my = 0.2 kg. At the initial state (state 1), the pressure and temperature of the nitrogen are P, = 100 kPa and T, = 100 "C, respectively. The nitrogen is compressed in a polytropic process with an exponent n = 1.4. At the final state (state 2), the pressure of the nitrogen gas is P; = 500 kPa. A copper plate inside the cylinder is in thermal equilibrium with the nitrogen gas at both the initial and the final states of the process. The mass of the copper plate is me =0.1 kg. The nitrogen can be treated as an ideal gas. (a) Determine the initial and final volume of the nitrogen gas (i.e., V, and V;). (b) Determine the final temperature of the nitrogen gas (i.e., T;). (c) Determine the total work of the process (i.e., ¡W:).

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