Is Your Steam Saturated or Superheated?

Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
2 replies · 2K views
zorroz
hi guys can you tell,

how to know if steam is saturated or superheated?
 
Physics news on Phys.org
Look up the phase diagram of water. You need to know the temperature and pressure..

https://image.slidesharecdn.com/hea...p01/95/heat-transfer-16-638.jpg?cb=1355443378

When you boil a kettle the water vapour coming out can be clear (eg dry) near the spout then as it moves away it cools and condenses to visible (wet) steam. Dry steam is very dangerous because it contains the latent heat of vapourisation. When it condenses on skin it delivers a lot of energy.
 
  • Like
Likes   Reactions: berkeman
zorroz said:
hi guys can you tell,

how to know if steam is saturated or superheated?
Cool it a little, and see if you get any condensation.