2. During some actual expansion and compression processes in piston-cylinder devices, the gases have been observed to satisfy the relationship PV" = C, where n and C are constants. Calculate the work done when a gas expands from 350 kPa and 0.03 m3 to a final volume of 0.2 m3 for the case of n = 1.5.

2. During some actual expansion and compression processes in piston-cylinder devices, the gases have been observed to satisfy the relationship PV" = C, where n and C are constants. Calculate the work done when a gas expands from 350 kPa and 0.03 m3 to a final volume of 0.2 m3 for the case of n = 1.5.

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

Air is contained in a vertical piston–cylinder assembly by a piston of mass 50 kg and having a face area of 0.01 m2. The mass of the air is 5 g, and initially the air occupies a volume of 5 liters. The atmosphere exerts a pressure of 100 kPa on the top of the piston. The volume of the air slowly decreases to 0.002 m3 as the specific internal energy of the air decreases by 260 kJ/kg. Neglecting friction between the piston and the cylinder wall, determine the heat transfer to the air, in kJ. The total force exerted on the air inside the cylinder in kN is
Thermodynamics
2. An ideal gas undergoes a process for which the temperature remains constant at 75°C. The pressure changes from 145 kPaa to 185 kPaa. If the initial volume of the gas is 3 m², what is the change in internal energy in kJ/kg during this process?
a reciprocating compressor 0.1 m3 of air at 0.95 bar and 32°C is compressed according to PVn =constant until the pressure is 7 bar. Determine the volume and temperature of the air after compression. The work done on the air and the heat rejected to the cylinder walls assuming the compressor is water cooled and n=1.1 show the cancellation of units and formula used
Air with cv = 0.723 KJ/Kgm - °R is compressed in a piston-cylinder machine according to pV1.3 = c from an initial temperature of 17°C and pressure of 1 bar, to a final pressure of 5 bars. Determine the final temperature, the heat transferred and the work.
Consider a piston-cylinder assembly containing 10.0 kg of water. Initially, the gas has a pressure of 20.0 bar and occupies a volume of 1.0 m3. The system undergoes a reversible process in which it is compressed to 100 bar. The pressure volume relationship during this process is given by: PV1.5 = constant. (a) What is the initial temperature? (b) Calculate the work done during this process. (c) Calculate the heat transferred during this process. (d) What is the final temperature?
Oxygen (molar mass 32 k g / k m o l ) expands reversibly in a cylinder behind a piston at a constant pressure of 3.188 bar. The volume initially is 0.0107 m3 and finally is 0.0318 m3; the initial temperature is 17 0C. Calculate the work input during the expansion with the correct unit. Assume oxygen to be a perfect gas and take the specific heat at constant pressure as = 0 . 9 1 7 k J / k g K.
1. Calculate the work done in a polytropic (n=1.21) compression of a gas in a system with moving boundary from P1 = 15 psia, V1 = 1 ft3 to P2 = 150 psia, V2 = 0.15 ft3.
Air enters the cylinder of a 4-stroke gasoline engine at 33°C and 101.2 kPa. Engine clearance is 10.5% of the displacement. 2600 kJ/kg of heat is added during the constant volume heat addition process. Draw and label the P-V and T-S diagrams & Determine the following: a. Pressure & Specific Volume at each state. b. Work per unit mass (using volume and pressure).
Oxygen (molar mass 32 k g / k m o l ) expands reversibly in a cylinder behind a piston at a constant pressure of 3.19 bar. The volume initially is 0.0124 m3 and finally is 0.03 m3; the initial temperature is 17 0C. Calculate the work input during the expansion with the correct unit. Assume oxygen to be a perfect gas and take the specific heat at constant pressure as = 0 . 9 1 7 k J / k g K.
6.022 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. (Please do not round off the intermediate answers, only the final answer in three decimal places)
An ideal gas with a molecular mass of 32 is contained in an inflexible tank. It is heated from 244.46°C to 555.23°C. If the change in internal energy is found to be 191 kJ/kg, compute for the work in kJ/kg.