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Flow Flashing Through Orifice Formula


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#1 anand1194

anand1194

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Posted 07 January 2019 - 01:46 AM

Can someone please tell me the source of this formula below for flow through orifice in flashing condition? It would be very helpful.
Thank you.

 

p1 : Primary Pressure (kPa abs) p2 : Secondary Pressure (kPa abs) do : Diameter of Orifice (mm) C : Discharge Coefficient Qw : Water Flow Rate (m³/h) FL : Pressure recovery factor (=0.9) FF : Critical pressure ratio factor P : Absolute vapor pressure of the water at inlet temperature (kPa abs) SG : Specific Gravity

 13400_m.png

 



#2 breizh

breizh

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Posted 07 January 2019 - 02:54 AM

Hi

You may contact TLV for the source , they are using similar equation for water calculation flow rate .

IEC 60534-2-1 ?

 

good luck.

 

Breizh


Edited by breizh, 07 January 2019 - 05:14 AM.


#3 anand1194

anand1194

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Posted 08 January 2019 - 03:26 AM

Thanks.






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