Chapter 3: Tuesday March 19 2024-Notes

Question 1

In T-v diagram what does it mean when there’s:
No phase distinction

Answer 1

Supercritical

Question 2

In both T-v and P-v diagrams:
What’s the. Name when l: T<Tsat; P>Psat

Answer 2

Liquid region (or) compressed liquid (or) subcoolid liquid

Question 3

In both T-v and P-v diagrams what does it mean when both liquid and vapor exist

Answer 3

Two Phase Region

Question 4

In. Both T-v and P-v diagrams what does f mean

Answer 4

Saturated liquid
T=Tsat; P=Psat

Question 5

In both T-v and P-v diagrams what does g mean?

Answer 5

Saturated vapor
T-Tsat; P=Psat

V=vg

Question 6

What is the difference between f and g: T=Tsat; P=Psat

Answer 6

vf<v<vg

Question 7

In T-v diagrams what is the vapor region (or) superheated vapor?

Answer 7

S: T>Tsat; P<Psat

Question 8

Is the T-v and the P-v diagram process reversible?

Answer 8

Yes

Question 9

If you’re using another substance other than water does the process stay the same?

Answer 9

No the process is the same but the values of the boiling point and the pressure point will be different depending on the substance

Question 10

Quality’s/ mass fraction of vapor’s equation

Answer 10

U=mass of vapor/(mass of vapor)+(mass of liquid)

Question 11

How do you find a phase of a system?

Answer 11

1.) For a given T: find Psat—> Table A2 or A2E
For a given P: find Tsat —> Table A3 or A3E
2.) If T<Tsat (or) P>Psat => liquid state
- look in table A5, A5E
3.) If T> Tsat (or) P<Psat => Vapor State
- look in table nA4, A4E
4.) If T=Tsat (or) P=Psat => Two-phase mixture
- stick to tables A2 and A3
- P and T no longer independent
- Need quality u= (m vapor)/(m total)
M total= m vapor +m liquid