Assume variable specific heats

Assignment Help Mechanical Engineering
Reference no: EM13719315

Air contained in a rigid, insulated tank fitted with a paddle wheel, initially at 4 bar, 40oC and volume of 0.2 m^3, is stirred until its temperature is 500 K. Assuming the ideal gas model for the air, determine the amount of entropy produced, in kJ/K. Assume variable specific heats (data from Table A-22).

Reference no: EM13719315

Questions Cloud

Calculate the entropy generation rate for the process : Superheated steam enters one section of an open end feed water heater at 5bar and 240 c with a mass flow rate of 1 kg/s. compressed liquid water at the same pressure and 35 C enters another inlet. The mixture of these two streams leaves as a saturate..
Insulated duct of varying cross-sectional area : Air at 300 kPa, 63oC, and a velocity of 423 m/s enters an insulated duct of varying cross-sectional area. The air exits at 150 kPa, 88oC. At the inlet, the cross-sectional area is 6.57 cm^2.
Consider adiabatic mixing chamber operating at steady state : Consider an adiabatic mixing chamber operating at steady state into which steam enters with quality of 0.9. Water enters through a separate inlet at 300C. At the exit the temperature is 1500C and mass flow rate is 2 kg/s. The pressure in the mixing c..
Water initially exists as a saturated liquid : Water initially exists as a saturated liquid at 186oC is contained in a piston-cylinder assembly. The water undergoes a process to the corresponding saturated vapor state, during which the piston moves freely in the cylinder
Assume variable specific heats : Air contained in a rigid, insulated tank fitted with a paddle wheel, initially at 4 bar, 40oC and volume of 0.2 m^3, is stirred until its temperature is 500 K. Assuming the ideal gas model for the air, determine the amount of entropy produced, in kJ/..
Determine the exit temperature of the air : Air enters the evaporator section of an air-conditioner at 100 kPa, 27oC with a volumetric flow rate of 6 m^3/min. R-134a enters the evaporator at 120 kPa with a quality of 0.3 and rate of 2kg/min and it leaves as a saturated vapor at the same pressu..
Heat transfer is negligible are kinetic and potential energy : Steam at 550 lbf/in.2, 70 oF enters a turbine operating at steady state and exits at 1 lbf/in.^2. The turbine produces 500 hp. For the turbine, heat transfer is negligible as are kinetic and potential energy effects.
What are their compositions and amounts : Assume that the overall composition is 0.6 wt%C (and 99.4 wt%Fe) and a total weight of 10Kg. At T=727C, how many phases are present and what are their compositions and amounts?
Find the steady state temperature in the plate : You have a 2 dimensional (just X&Y) square plate with sides measuring a=24. The upper and lower sides of the plate are perfectly insulated, but the right and left sides are not. The left side is kept at 0°C and the right side is kept at f(y) °C. Find..

Reviews

Write a Review

Mechanical Engineering Questions & Answers

  Determine the maximum in-plane shear strain and the maximum

a closed cylindrical storage tank contains gas under pressure p and has an inner diameter of 24 in. and a wall

  What is the optimal number of cases to have on hand to

a beer distributor incurs a penalty cost of 2.00 per case of shortage and 1.00 charge per case left over in inventory

  If a football is kicked at a 45 degree angle determine its

if a football is kicked at a 45 degree angle determine its minimum initial speed va so that it passes over the goal

  Diaphyseal cross section carries a bending moment

Assume that a diaphyseal cross section carries a bending moment M. Let the cross section be circular with inner and outer diameter of 20 and 30 mm, respectively, and assume that the neutral axis (NA) passes through the centroid. Draw the cross sectio..

  Determine the work per unit mas of air for an adiabatic

air as an ideal gas is compressed from a state where the pressure is 0.1 mpa and the temperature is 27o to a state

  What is the percent increase in the heat transfer

The average temperature of the human body is 98.6°F. Calculate the maximum rate of heat transfer per unit area by radiation from the human body in a room that is at 50°F. What is the percent increase in the heat transfer if rate you are running a fev..

  Calculate the velocity v of the system after the boulder

the 300 kg and 400 kg mine cars are rolling in opposite directions along the horizontal track with the respective

  Draw the t-s diagram

Draw the T-s diagram (hint: it would help to begin with a schematic of the cycle) and.

  Steam enters an adiabatic turbine at 400c and 2mpa pressure

steam enters an adiabatic turbine at 400c and 2mpa pressure. the turbine has an isentropic efficiency of 0.9. the exit

  A well-insulated control volume operates at a steady state

a well-insulated control volume operates at a steady state and has one inlet location 1 and two outlets locations 2 and

  Find power required by the compressor isothermal efficency

refrigerant r-134a flows through a refigeration system at a rate of 0.12 kgs . at the entrance to the adiabatic

  The water now undergoes a process until its volume is

the spring-loaded piston-cylinder device is filled with 0.5 kg of water vapor that is initially at 4 mpa and 400oc.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd