Determine the temperature and the entropy generation, Physics

Hexane is throttled from 18.15 bar, 507.6 K to 0.1 bar.  Determine the temperature at the exit and the entropy generation.

Steam is cooled under constant pressure from 400oC, 3 bar to a final state that contains wet steam with Xv = 0.9.  (hint: for this problem it might be easier to use the Mollier diagram than the steam tables)

a.  Determine ?H and ?S.

b.  Determine the heat needed to increase Xv to 1.

3.  A tank (V = 0.19 m3 ) full of cyclohexane and T = 554 K explodes at P = 20 bar.  The final state of cyclohexane is a vapor at 1 bar.

a.  What is the final temperature of the cyclohexane?  The ideal gas, constant pressure heat capacity of cylcohexane is 200 J/mol/K.

How much energy was released in the explosion?

4.  An insulated tank at 20 bar contains wet steam with 20% moisture.  The tank is emptied by throttling its contents to the atmosphere, assumed to be at 1 bar.  Assuming the entropy generation inside the tank is zero and the initial specific entropy inside the tank is Si, what is the entropy of the tank (in J/K) when it is half empty by mass?

Posted Date: 3/19/2013 1:14:59 AM | Location : United States







Related Discussions:- Determine the temperature and the entropy generation, Assignment Help, Ask Question on Determine the temperature and the entropy generation, Get Answer, Expert's Help, Determine the temperature and the entropy generation Discussions

Write discussion on Determine the temperature and the entropy generation
Your posts are moderated
Related Questions
Mechanical stressing: When a material undergoes a mechanical treatment, its resistivity changes due to mechanical distortion of the crystal structures. The localized strain produc

Silver   Symbol     Ag Atomic weight 107.868  Atomic number   47 discovery

Question  Gauss's Law can be considered a cause and effect equation. When consequently considered on which side of the equation is the cause and on which side is the effec

Write the mathematical relation for the resistivity of a material in terms of relaxation time, number density and mass and charge of charge carriers in it. Describe, using this rel

It contains 35%- 90% nickels. Higher is the nickel content higher is the permeability and lower is the magnetic saturation of the alloy. MN, CO, and Mo can also be added in trace q

A radioactive substance has a half life of 1 min. If one nuclei decays now , when will be next decay????

Why does a glass filled with water shatter when you run your finger along the rim of the glass? A piece of crystal stemware has a natural or resonant frequency that can be exc

Get expression for intensity of the diffracted beam by single slit. Explain the position of minima and maxima.

A roller coaster starts from rest at the top of an 18m hill. The car travels to the bottom of the hill and continues up the next hill that is 10.0m high. How fast is the car moving

Why we are showing work done over a closed path is zero to prove that electrostatic forces are conservative