air at pressure of 100 kPa has a volume of 0.32 m3. The air is compressed in a reversible adiabatic manner until temperature is 190 degree celcius. The reversible work is -63 KJ/kg. Determine change in internal energy.

air at pressure of 100 kPa has a volume of 0.32 m3. The air is compressed in a reversible adiabatic manner until temperature is 190 degree celcius. The reversible work is -63 KJ/kg. Determine change in internal energy.

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

Hand written not allowed
A 0.20 kg/s of air are compressed isothermally from P,= 100 kPa and V,= 0.15 m3/s to P2= 700 kPa. Determine: The work in kW and the change in entropy in kJ/s-K for (a) closed or non-flow process and (b) open or steady flow process with initial and final velocity of v, respectively. 15 m/s and v, = 60 m/s, %3D
A pump handling a liquid raises its pressure from 1 bar to 30 bar. Take the density of theliquid as 990 kg/m³. The isentropic specific work done by the pump in kJ/kg is
The closed piston cylinder system contains N2 gas at 5 bar and 127°C with initialvolume of 750 cm3. The gas is heated at constant temperature until its pressure isreduced to 1 bar. Work done during this process is 0.55 kJ. Determine whether theprocess is internally reversible, irreversible or impossible. Assume ideal gasbehavior. Explain your answer with proper justification and explanation.
A- One kg of steam with a quality of 21% is heated at a constant pressure of 201 kPa. The work done by the steam is 265 kJ. Calculate the work change of the steam.
In an experiment, a certain amount of air is heated at constant pressure from 1.7 m3, 20 0C and 97 kPa to 427 0C. It is then cooled at constant volume back to its initial temperature. Calculate the change specific entropy in the cooling process in the correct unit in SI and 1 decimal place. Take Specific heat at constant pressure and constant volume for air as 1.005 kJ/kg K and 0.717 kJ/kg K respectively.
An air compressor takes in air at a pressure of 100 kPa and a temperature of 300 K. The compressor is cooled at a rate of 15 k/kg and the mass flow rate is 50 kg/minute. The air leaves at a pressure of 600 kPa and a temperature of 420 K. What is the work that needs to be input to the compressor to achieve this rate of flow? You may use a cp of 1.006 k/kg-K. Give your answer to three significant digits in kilowatts.don't put kw in your answerl) COMPRESSOR SECTION Compressor housing Compressor a dicharge Compreor anbient a Compreor wheel
Refrigerant-134a (R-134a) enters the expansion valve of a refrigeration system at 650 kPa with a quality of 20%. The pressure of R-134a at the outlet is 200 kPa. a)Determine the temperature of R-134a at the outlet in oC. Calculate the difference of internal energy between the outlet and inlet in kJ/kg
A piston-cylinder system has a compression ratio (biggest volume vl/smallest volume v2) of 8. Initial temperature Tl is 295 K undergoes a compression process in reversible and adiabatic manner. Determine the final temperature of T2.
2. Steam expands in a turbine from 4 MPa and 400°C to 50 kPa and 100°C at a rate of 2.3 kg/s. Heat is lost from the turbine at a rate of 58 kJ/s during the process. Find the power output of the turbine.
تحرير Ep 2- the اليوم 1:33 ص Umg (۱۰ 0.05 m² of gas at 6.9 bar expands reversibly in a cylinder behind a piston according to a law PV25-C until the volume is 0.08 m². Calculate the work done by the gas and sketch the process on the P-V diagram (15 300J) ه م ده بله - -------------------------- - - - - the depth (11 1:36
In an experiment, a certain amount of air is heated at constant pressure from 1.7 m3, 32 0C and 97 kPa to 413 0C. It is then cooled at constant volume back to its initial temperature. Calculate the change specific entropy in the constant pressure process in the correct unit in SI and 1 decimal place. Take Specific heat at constant pressure and constant volume for air as 1.005 kJ/kg K and 0.717 kJ/kg K respectively. Add unit. 1 decimal place.