3 replies to this topic

[trungphu]

Hi everyone,

 

Hope someone can explain to me:

 

Why need difference level (pressure) of steam supply?

 

Thank you

[fallah]

Hi,

 

Because of need to different levels of heating...

[Art Montemayor]

Trungphu:

 

Pay special attention to fallah's expert comment.

 

Please put on your practical engineering hat on.   As you should already know, in order to employ a steam source (or any other heat source) you need a DRIVING FORCE.  The driving force(s) for heat transfer are temperature differences - a basic concept you as a student should already fully understand and know how to apply.

 

In order to apply a steam source as a heat medium, its thermal condition (temperature & state - such as saturated or superheated) must be compatible with what you need to apply it to.  If you need superheated steam, then you must supply that source.  If you need saturated steam for heating other fluids, then you must supply that source as well - at a temperature that is at least 10 to 20 degrees over the desired temperature that you want your heated product to have.  That is fairly obvious and common sense because otherwise, you won't be able to use it.

 

It is also obvious and common sense to fully understand that you can't take saturated steam and expect to convert it to superheated steam without having a special heating process for it.  If you need superheated steam in your process plant, the usual and practical practice is to generate it in a superheated supply boiler and supply it as such in a superheated steam header to those parts of your plant that need it.

[trungphu]

Thank you all for your answer. It helps me understand more.