PROBLEM 2: Cooling a Gas in a Piston-CylinderFour-tenths kilogram of a certain gas is contained within a piston-cylinder assembly. The gasundergoes a process for which the pressure-volume relationship is pV1.5 = constant.U2– U1 =-55 kJ/kgE-Gas%3DconstantThe initial pressure is 3 bar, the initial volume is 0.1 m3, and the final volume is 0.2 m3. The changein specific internal energy of the gas in the process is u2-ul = -55 kJ/kg.There are no significant changes in kinetic or potential energy.a) Sketch the process on a p-V diagramb) Calculatę the work done by the piston, in kJ.c) Determine the net heat transfer for the process, in kJ.

Given data: Mass, m = 0.4 kg PV1.5 = constant Initial pressure, P1 = 3 bar Initial volume, v1 = 0.1…

Answered: PROBLEM 2: Cooling a Gas in a…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

step by step solution with units. Thermodynamic-Processes of gases
Need help with these two homework problems 1) A tank contains a two-phase liquid–vapor mixture of Refrigerant 22 at 8 bar. The mass of saturated liquid in the tank is 25 kg and the quality is 30%. Determine the volume of the tank, in m3, and the percentage of the total volume occupied by saturated vapor. 2) One kilogram of water contained in a piston–cylinder assembly, initially saturated vapor at 100 kPa, is condensed at constant pressure to saturated liquid. Consider an enlarged system consisting of the water and enough of the nearby surroundings that heat transfer occurs only at the ambient temperature of 25oC. Assume the state of the nearby surroundings does not change during the process, and ignore kinetic and potential energy effects. For the enlarged system, determine the heat transfer, in kJ, and the entropy production, in kJ/K.
what is true of the heat content for a system at constant pressure
An ideal gas contained in a piston-and-cylinder device undergoes a thermodynamic cycle made up of three quasi-equilibrium processes. Step 1-2: Adiabatic compression from 330 K and 9.35 atm to 12.58 atm Step 2-3: Isobaric cooling Step 3-1: Isothermal expansion c.) Calculate Q, W, ΔU and ΔH, in J/mole, for each step in the process and for the entire cycle. Assume that CP = (5/2) R. d.) Is this cycle a power cycle or a refrigeration cycle? Explain. Calculate the thermal efficiency or COP of the cycle, whichever is appropriate.
The diagram presented represents a thermodynamic process experienced by 27.5mmol (millimoles) of a monatomic ideal gas. The volume axis is divided into equal increments υ0=777cm3 while the pressure axis is divided into equal increments p0=0.301atm. Part (a) How much work, in joules, does the gas perform on its environment during the thermodynamic process represented in the diagram? Part (b) What is the change, in joules, of the internal energy of the gas during the process represented in the diagram? Part (c) How much heat, in joules, is absorbed by the gas during the process represented in the diagram?
How much ice (by mass) at a temperature of -19.9 degrees Celsius must be added to 325g of liquid water at a temperature of 60.1 degrees Celsius in order for the final temperature of both to reach 21 degrees Celsius. c of ice=2100 J/kg/C c of water=4190 J/kg/C Latent heat of fusion of water=3.34E5 J/kg/C a. .115kg b. 12kg c. 5 lbs d. .191kg
Pls ASAP thanks in advance Question 1 This question requires the use of the Thermodynamic Property Tables supplied as additional material. A closed system comprises a rigid (non-deformable) vessel of volume 0.3 m3 containing 5 kg of pure water substance, initially at a pressure of 30 bar (state 1). (a) For state 1, show that the system is in the two phase region The system now undergoes an isochoric (constant volume) process during which its pressure increases to 70 bar (state 2). (b) For state 2 show that the system is now in the superheated region. (c) Sketch the process described above on a pressure v specific volume diagram. Include in your sketch the boundaries between the liquid, two phase and vapour regions, and the critical pressure.
7.450 kg of steam at a pressure of 20 bar and temperature of 300 deg C expands isentropically to a pressure of 0.5 bar. Determine the work done on steam in kJ during expansion. Use steam tables of keenan et al
Problem 2. An isolated cylinder-water device contains 5 l of saturated liquid water at a pressure 200 kPa constant. A palette wheel shakes the water, while a current of 7.5 passes For 55 min, for a resistance placed in the water. If half of the liquid evaporates during This process at constant pressure, and the work of the pallet wheel is 410 kJ. Part A. Determine 1) the properties of State 1 (t₁; p₁; v₁; ui; hi; sı). 2) The properties of State 2 (T2; P2; V2; U2; H2; S2). 3) The change of: specific volume, internal energy, enthalpia, entropy. Part b. Make the P-V and T-V diagrams of the process, placing the values of the properties.
A closed, rigid tank with a volume of 0.6m ^ 3 contans saturated water vapor at900 kPa the nital stale The tar pressures decreased to 300 kPa through heat exchange with the surroundings Question 1 to apply to Problem 1 What is the initial specific volume v, m^ 3 kg ?
3.2. Heat and Work 0.2 kg of argon (mon-atomic ideal gas, R = 0.208 kJ/kgK ), initially at 250K, are confined in an isochoric system of 0.15 m^3 volume, and 2.5 kg of xenon (mon-atomic ideal gas, R = 0.063 kJ/kgK ), initially at 420K, are confined in an isobaric piston-cylinder system at 1.8 bar. Both systems are brought into thermal contact and equilibrate their temperatures with no heat loss to the outside. What is the final temperatures, pressures and volumes of both gases, the work done by both systems, and the amount of heat transferred between the two systems and the total generation of entropy? (Sgen= ∫ Sgen dt ) and s=Cv =3/2R, Cp =5/2R
-Thermodynamics- During an isentropic expansion process of 1.2 kg/s of air from 8 bar to 1 bar a) represent the process in pv. and you b) determine the initial and final volume, determine the final temperature if the air temperature is 485K

SEE MORE QUESTIONS

Recommended textbooks for you

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Control Systems Engineering

Mechanical Engineering

ISBN:

9781118170519

Author:

Norman S. Nise

Publisher:

WILEY

Mechanics of Materials (MindTap Course List)

Mechanical Engineering

ISBN:

9781337093347

Author:

Barry J. Goodno, James M. Gere

Publisher:

Cengage Learning

Engineering Mechanics: Statics

Mechanical Engineering

ISBN:

9781118807330

Author:

James L. Meriam, L. G. Kraige, J. N. Bolton

Publisher:

WILEY

SEE MORE TEXTBOOKS