Superheated Steam

Question 1

What is the process to create superheated steam?

Answer 1

1. Place water in a flask. 2. Heat it. 3. Use a throttle (pressure release valve). 4. Evaporate all liquid water. 5. Keep heating. 6. Steam gains more energy and becomes superheated.

Question 2

What is superheated steam?

Answer 2

Steam that has had all its liquid evaporated and is heated further, gaining more energy without increasing pressure.

Question 3

What is the critical point in thermodynamics?

Answer 3

The last point at which liquid and vapor can exist together.

Question 4

What is a supercritical fluid?

Answer 4

A state of matter at higher temperature and pressure than the critical point, where it is neither a distinct liquid nor vapor but behaves like both.

Question 5

What is the formula to calculate entropy (s) of wet steam using dryness fraction (x)?

Answer 5

s = x·s_g + (1 − x)·s_f, where:
- s = specific entropy of the wet mixture
- x = dryness fraction (quality)
- s_g = entropy of saturated vapor
- s_f = entropy of saturated liquid