Problem 23.2 For a piston cylinder system where the air inside the piston begins with a pressure of 800 kPa, volume of 0.1 m³, and temperature of 600 K, calculate the p-dV work (make sure to indicate whether the work is going into the system or out of the system) and sketch the process on a p-V diagram for the following situations: (a) constant pressure process to a final volume of 0.3 m³ (b) constant volume process to a final pressure of 200 kPa (c) constant temperature process to a final volume of 0.3 m³ (d) a polytropic process where n = 1.4 to a final volume of 0.3 m³ [Note: treat air as an ideal gas]

Problem 23.2 For a piston cylinder system where the air inside the piston begins with a pressure of 800 kPa, volume of 0.1 m³, and temperature of 600 K, calculate the p-dV work (make sure to indicate whether the work is going into the system or out of the system) and sketch the process on a p-V diagram for the following situations: (a) constant pressure process to a final volume of 0.3 m³ (b) constant volume process to a final pressure of 200 kPa (c) constant temperature process to a final volume of 0.3 m³ (d) a polytropic process where n = 1.4 to a final volume of 0.3 m³ [Note: treat air as an ideal gas]

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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Concept explainers

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

Problem 23.2
For a piston cylinder system where the air inside the piston begins with a pressure of 800 kPa, volume of
0.1 m³, and temperature of 600 K, calculate the p-dV work (make sure to indicate whether the work is
going into the system or out of the system) and sketch the process on a p-V diagram for the following
situations:
(a) constant pressure process to a final volume of 0.3 m³
(b) constant volume process to a final pressure of 200 kPa
(c) constant temperature process to a final volume of 0.3 m³
(d) a polytropic process where n = 1.4 to a final volume of 0.3 m³
[Note: treat air as an ideal gas]
Ans: a) 125 kJ ≤ |W| ≤ 175 kJ
c) 75 kJ ≤|W| ≤ 100 kJ
d) 70 kJ ≤ |W| ≤ 80 kJ

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I need help with this thermo practove problem that I do not understand- thank you! 2 kg of air in a piston cylinder initially at P1=101 kPa, T1= 300 K undergoes a cyclemade up of three processes: 1-2 Isothermal compression until the volume is (1/15) of its original value.2-3 Constant Pressure heating3-1 Isentropic Expansion back to the initial state Assume air is an ideal gas with constant specific heats with the following values: Cpo=1.027kJ/kgK; Cvo= 0.740 kJ/kgK; R=0.287 kJ/kgK; ɣ=1.388 Fill out the processes table below. Calculate Processes 1-2, 2-3, and 3-1 clearly