Do not give answer in image and hand writing A piston - cylinder system is filled with air. Initially, the air is at 489 kPa and 26\deg C. Then air isexpanded to 1.9 times its original volume. Air is assumed to be an ideal gas. Assume the expansionprocess is polytropic with polytropic exponent n = 1.2. a. Find the change in entropy usingconstant specific heats at 300 K. b. Find the change in internal energy using constant specificheats at 300 K. c. Find the change in entropy considering specific heats are temperature -dependent. d. Find the change in internal energy considering specific heats are temperature -dependent.

Answered: Image /qna-images/answer/a663fe55-d551-475d-b5c9-d269885b946f.jpg

A piston - cylinder system is filled with air. Initially, the air is at 489 kPa and 26\deg C. The expanded to 1.9 times its original volume. Air is assumed to be an ideal gas. Assume the process is polytropic with polytropic exponent n = 1.2. a. Find the change in entropy u constant specific heats at 300 K. b. Find the change in internal energy using constant sp heats at 300 K. c. Find the change in entropy considering specific heats are temperature dependent. d. Find the change in internal energy considering specific heats are tempera

A piston - cylinder system is filled with air. Initially, the air is at 489 kPa and 26\deg C. The expanded to 1.9 times its original volume. Air is assumed to be an ideal gas. Assume the process is polytropic with polytropic exponent n = 1.2. a. Find the change in entropy u constant specific heats at 300 K. b. Find the change in internal energy using constant sp heats at 300 K. c. Find the change in entropy considering specific heats are temperature dependent. d. Find the change in internal energy considering specific heats are tempera

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

1:Heat flows from a hot reservoir at 800 K to another reservoir at 250 K. H entropy change of the overall process is 4.25 kJ/K, make calculations for the heat flowinger of the high temperature reservoir.
At the start of the compression process in the reciprocating compressor of refrigeration plant the refrigerant is at 1.5 bar, dry saturated. At the end of the compression process, which is according to a reversible polytropic law pv-C., The pressure is 6.5 bar. Using the properties of refrigerant given as table, interpolating where necessary, calculate. • The change of specific entropy during the • The degree of superheat of refrigerant after compression. process.
4. Air at a temperature of 500 0C is compressed at a constant pressure of 1.2MPa from a volume of 2 m3 to a volume of 0.4m3 . If the initial internal energy decrease is 4820 KJ, find a. The work done during the reversible compression b. The heat transferred c. The change of enthalpy d. The average specific heat at constant pressure
200Kg/min superheated steam at 40 bar and 350C enters a turbine through a 7.5cm ID pipe. It exits at 5bar as saturated steam through a 5cm ID pipe neglect the change in potential energy of the system. What is the temperature of the outlet saturated system? How much energy is transferred to or from the turbine?
Change in specific ENTROPY in the ideal gas from state 1 to state 2.
3.Four kilogram of steam is initially at 1MPa and x=40% inside the piston cylinder. There is a 30C superheat introduced in steam isopiestically. Find the change of entropy of the steam.
If 6 liters of air at a pressure of 100 kPaa and 25 0 C are compressed reversiblyaccording to PV 2 = C, until the volume becomes 2 liters. determine : a. The thermodynamic process the problem representsb. the pressure, temperature, and volume after the processc. change in internal energy, change in enthalpy and change in entropyd. work nonflow and heat transferred
The pressure of the air in a starting vessel is 40 bar and the temperature is 24°C. If a fire in the vicinity causes the temperature to rise to 65 °C. Neglect anyincrease in the volume of the vessel which is 5 liters. determine the following: a. The thermodynamic process the problem representsb. the pressure, temperature, and volume after the processc. change in internal energy, change in enthalpy and change in entropy
Water vapor is at 0.5psia and 100. Assume the vapor respond to an ideal gas, use the steam table to find its specific volume, enthalpy and entropy (in SI units).
4.54 kg mass of water vapor at 100kPa (abs) and an entropy of 8.0333 kJ/kg K; undergo a process at constant pressure to a state where the occupied volume is 1.62 m3/kg. It is requested: a. Plot t-V diagram b. Find the initial temperature (°C) c. Find the quality (%), moisture (%) and final internal energy (kJ)
Draw Pv and Ts diagram of reversible isobaric process. Write the relationship between thermodynamic properties.
A 5 m3rigid tank has propane at 500 kPa, 700 K and connected by a valve to another tank of 0.7 m3with propane at 350 kPa, 600 K. The valve is opened and the two tanks come to a uniform state at 350 K. What is the final pressure?For propane R = 0.1886 kJ/kgK