2 replies to this topic

[owe]

Good day!

I saw many things concerning steam sparger on the forum, but I miss one thing to be sure of my design! If you can help me it will be really appreciated!

I need to inject in a water tank around 660 lbs/h (300 kg/h) of steam (around 6 barg and 200°C). The pressure in the tank at sparger level is 2,9 psi (0,2 bar) because it is just an atmospheric tank.

typically I have done a sparger with small holes and my calculation give a result of 30m/s IN the sparger and the pressure drop through the sparger is only 0,02 bar. This is low to keep a velocity through the holes around 35-40m/s. The pressure drop is very low. And finally I can not find a criteria on the speed of steam in the holes.

Can you just tell me what is the criteria for the holes velocity please? I think the 25-30m/s inside the pipe is high but good. I just want to see with you the velocity and pressure drop to be sure.

Once again, many thanks for your support as usual!!

 

 

[latexman]

Make the sum of the area of all the holes ~ 1/2 the cross-sectional area of the pipe. That usually leads to good distribution.

[breizh]

Hi,

Consider this link to support your work:

https://www.cheresou...g-calculations/

 

More sophisticated equipment is available on the market; you may want to ring or email these guys to get a customized solution.

You will find a datasheet at the end of the document to support your query.

 

another reference:

https://www.pro-soni...ct-your-boiler/

 

last resource (TBP rule of thumb -8)

https://www.eng-tips...-design.233068/

 

High velocity means risk of erosion .

 

Good luck

 

Breizh

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