Steam Flow through holes in a pipe

[saruvanan]

TL;DR

What will be mass flow rate of dry saturated steam through holes on a pipe.

What will be mass flow rate of dry saturated steam through holes on a pipe. Pipe ID: 25mm, Steam Pressure 3 kg/cm^2, Holes' Dia: 3mm, Number of Holes: 5.

 

[jrmichler]

Is this a homework problem? Is there any restriction downstream from the holes? What is your background? What have you tried so far?

Search engine is your friend. Start with orifice flow, then search choked flow. If the 25 mm pipe is very long, search Moody chart or Moody diagram to calculate pressure drop in the pipe to find steam pressure at the holes.

 

[saruvanan]

We have a steam bath device in our company.
In this device, we feed a fabric in tape form by 2 set of rollers. Between the rollers we expose the fabric to steam (by a steam pipe directly beneath the fabric) in order to condition it.

The pipe is about 200mm long. When we switch on the rollers, we switch on the steam too by a ball valve. The pipe is closed at one end and other end is supplied with steam. All 5 holes are 40mm apart.