10 replies to this topic

[rsk]

10m3 water at 10 kg/cm2 & ambient temperature is flowing through a pipe 2" sch40 steel & 10mlength, if at user end pressure to be reduced to 5 kg/cm2, what size of orifice i need to install. please guide me how shall i aproach.
Thanks in advance

[maitreyee ghosh]

Dear rsk,

Sizing of an orifice plate is a trade off between delta P and orifice diameter along with flow. If this plate is used for flow mesurement and there's a desired delta P across it, then you put all the data in a standard orifice meter equation and get the size. If it is a restriction orifice, which is put many times in a mini flow line of a pump, You should fix the minimum flow to be the flow through the orifice and calculate the delta P to be (pump discharge pressure-system pressure), (where miniflow line joins) the other variable left being the orifice diameter. There are many softwares to calculate orifice diameter. Fix the desired diameter by trial and error. One such is shown in efunda.com.

Regards
Maitreyee

[pawan]

Download Excel Calculation sheet from my Blog & use it with all info.

[alimrheg@hotmail.com]

Download Excel Calculation sheet from my Blog & use it with all info.

how can i reach your blog

[ankur2061]

ali,

You can download orifice calculators from the download section of "Cheresources" itself. Refer the link provided below:

http://www.cheresour...h&fromMainBar=1


Regards,
Ankur.

[breizh]

http://www.pipeflowc...ns.com/orifice/

let you try this resource .
Breizh

[pawan]

Link is given in each of my post at the bottom.

Still re - linking here - http://profmaster.blogspot.in

[alimrheg@hotmail.com]

Ankur:

i tried this link but it takes me to search page. thank u sirs for reply but dtill i,m looking for tool to size my oriffice

[alimrheg@hotmail.com]

i want to size an oriffice on air system
with the following
max flow rate 140 Sm3/r
normal flow rate 71.9 Sm3/hr
pipe ID 77.927 mm
any spread sheet can cover this calculations

[Shivshankar]

alimrheg,

Take some efforts man. Please have sometime to take a look on around and understand ChE Website.

http://www.cheresour...eam-and-vapors/

http://www.cheresour...l-spreadsheets/

http://profmaster.bl...or-orifice.html (To Download the file , just click .... Orifice Calculation)

http://excelcalculat...ifice-size.html


Please look for above links

Regards
Shivshankar.

Edited by Shivshankar, 13 July 2012 - 08:53 AM.

[alimrheg@hotmail.com]

Shivshankar.

i tried your spread sheet but the macro is not working,so could you please reply to my email

appreciate your response