Question

Asked Apr 3, 2019

Air enters a compressor steadily at the ambient conditions of 100kPa and 20 degrees celcius and leaves at 900 kPa. Heat is lost from the compressor in the amount of 150kJ/kg and the air experiences an entropy decrease of 0.50kJ/kg*K. Using constant specific heats, determine (a) air exit temperature, (b) work input to the compressor, and (c) entropy generation during the process.

Step 1

Part (a): To calculate air exit temperature.

Given information:

Step 2

On substituting the values,

We have the value as below: -

Thus, the value of work input to the compressor is 192. 6727 kJ/kg.

Step 3

Part (b): Work input to compressor

Now, for calculating work input w...

Tagged in

Q: 4. Calculate the pressure difference between the inside and outside of a water droplet with a diamet...

A: Given information:Diameter of the water droplet is d=1/16 in.Temperature of the droplet is T=75FSo w...

Q: 2.56 In Fig. P2.56 pipe A contains gasoline (SG = 0.7), pipe B contains oil (SG = 0.9), and the mano...

A: Write the expression of pressure at the interface between gasoline and mercury on the left column.

Q: Here are these questions if I could get help with themIf a spherical storage tank holds 40,000 gallo...

A: There are four questions given in the image but we are entitled to solve only one question at a time...

Q: Seven kilograms of air is contained in a constant volume tank at 327 degrees C and 120 kPa, then is ...

A: Calculate the entropy change of the air.

Q: A well insulated turbine operates at steady state. Steam enters the turbine at 4 MPa with a specific...

A: Write the steady flow energy equation.

Q: A steam turbine at steady state is operated at part load by throttling the steam to a lower pressure...

A: Frist we have to draw the line diagram by using assumptions given in the problem

Q: At the instant represented, the velocity of point A of the 1.89-m bar is 3.6 m/s to the right. Deter...

A: Calculate the angle of inclination of the bar with respect to horizontal.

Q: Liquid water at 200 kPa and 20 degress celcius is heated in a chamber by mixing it with superheated ...

A: Draw the schematic diagram of the mixing chamber as shown in Figure (1).

Q: The mass fractions of a mixture of gases are 10 percent nitrogen, 3 percent helium, 55 percent metha...

A: Assume the mass of the mixture as 100 grams.Given mass of Nitrogen is 10% of mixture which equals 10...