-Exercise D02: A cylinder-piston arrangement contains m = 1 kg of water, initially in the saturatedLiquid state at p₁ = 0.8 MPa. It absorbs heat from a reservoir at TR =250. During the process the pistonmoves in such a way that the pressure remains constant. At the end of the process, water hascompletely evaporated into steam. Determine (a) heat transferred Q12, (b) change in entropy of thesystem AS12, (c) change in entropy of the reservoir ASR, and (d) change in entropy of the universe ASU

Answered: Image /qna-images/answer/29274766-25a7-4845-9495-126bbda24b81.jpg

Answered: - Exercise D02: A cylinder-piston…

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

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Water at the initial pressure and temperature of P1 = 40 bar and T1 = 553.15K, respectively, is cooled at constant volume, while heat is transferred to the surroundings at T0= 288.15K. At the end of the cooling process, the pressure is P2 = 9 bar. Questions: (a) Calculate the entropy change of the water during the process. (b) Calculate the entropy produced during the process.
Question : Consider a piston-cylinder device containing m = 1 kg of air at the initial temperature T1 = 900K and pressure P1 = 895 kPa (state 1). The ambient temperature and pressure are maintained at T (e) = 300K and P (e) = 100 kPa. The air expands in a reversible adiabatic process until the air pressure reaches the ambient pressure P(e) (the intermediate state 2). Subsequently, the system undergoes an isobaric process until it reaches the dead state DS. Part ( A) Evaluate the volume and internal energy of the air in the initial state 1, in the intermediate state 2, and in the final dead state DS. Also evaluate the temperature of the air in the intermediate state
A curious blacksmith forge 1 kg of iron then dropped it to an insulated container that contains 50 liters of water. Before dropping the iron into the insulated container, the blacksmith measures the temperature of iron and water as 500 °C and 20 °C, respectively. This curious blacksmith is always interested in thermodynamics and tries to calculate equilibrium temperature and the total entropy change because of his/her action. What will be the equilibrium temperature and the total entropy change? Is this process reversible or irreversible? (Density and specific heat of water at 20 °C are 995.10 kg/m3 and 4.16 kJ/kg.C, respectively. Assume that the specific heat capacity of iron is 0.5 kJ/kg.C)
please help with following problems: (a) Determine the heat exchanged between the piston/cylinder and the heatreservoir in kJ. Is heat added to the system or rejected to the heatreservoir? (b) Determine the change of entropy of the system in kJ/K. Is the resultreasonable? (c) Determine the entropy generation in kJ/K (change of entropy of thesystem+entropy change of the heat reservoir).
The entropy (s) of steam at pressure P = 18 MPa and internal energy (u) = 1699.1 kJ/kg is approximately: O 5.1064 kJ/kg. K O 1.2343 kJ/kg. K O 3.8720 kJ/kg. K
A 15-kg iron block initially at 250°C is quenched in an insulated tank that contains 80 kg of water at 15°C. Assuming the water that vaporizes during the process condenses back in the tank, determine the total entropy change during this process. 2.18 3.28 04.18 1.38 3.18 5.18
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A tub that contains 1 kg of gasoline at 29 oC received 100 kJ of heat. Calculate the extensive entropy change of the system (tub of gasoline). Report your answer in units of kJ/K using three decimal places. You may assume the process is isobaric, and CP of gasoline is 2.22 kJ/(kg · K)
A rigid tank containing air is subjected to a reversible process in which it is heated from its initial state at T1 = 600 K and P1 = 1.5 bar to a final state with P, = 4.352 psi. Assuming that air can be modelled as an ideal gas, determine the specific change in entropy As12. (kJ/kg-K). Your Answer:

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