I have a orifice installed in plant which is design for
0~100 inH2O for 0~80MMSCFD, now due to process change the
maximum flow is change to 120 MMSCFD so for this new
process value what will be the DP across orifice.



I have a orifice installed in plant which is design for 0~100 inH2O for 0~80MMSCFD, now due to pro..

Answer / carl_ellis

100 in H2O = 80 MMSCFD
x = 120 MMSCFD

Maximum flow rate is the square root of the normalized
percentage of the maximum DP (at the maximum flow rate)

The maximum flow rate increases 150% of the original max
flow rate:

120/80 = 1.50, so 120 MMSCFD is 150% of 80 MMSCFD, or a 50%
increase in maximum flow rate

To calculate the corresponding DP at a max flow rate 150%
higher than the original, where X = DP
sq rt of X = 1.50 (square root of normalized percentage of DP)

X = 1.50^2 = 2.25

2.25 = 225% (work in normalized percentage)

225% of 100 inH2O = 225 in H2O at a max flow rate of 120 MMSCFD

Carl Ellis
Measure First

Is This Answer Correct ?    5 Yes 1 No

Post New Answer

More Instrumentation Interview Questions

what is instrument philosophy

0 Answers   United Automation,


Working principle capacitance type level transmitter

3 Answers  


where proximity sensor installed on tank in loading arm application

0 Answers   Kalpena Industries,


1.what is the power consumption of three element drum level control in sugar industries? 2.how to reduce that?

0 Answers  


Vibration probe working principle?

1 Answers   Tata Steel Limited,






how to rectify the poor signal strength in utrasonic digtial flow meter ,model:ge digital xce868i

0 Answers   KNPC,


What is the purpose of RS Networks

2 Answers  


How will you calibrate an Absolute Pr.Transmitter of range 400mmHg absolute ?

0 Answers   CCIE,


What is the function of solenoid valve in on/off & shutdown valve and why it is not used in control valve normally?

0 Answers  


why generation of syncronized generator increases when frequency of grid is less then 50Hz & generation decreases when grid frequency goes up from 50 Hz, as comparision with set value entered in govering panel?

1 Answers  


what is modbus,profibus,fieldbus

2 Answers  


What is Erosion in a control valve?

0 Answers   CCIE, Fisher,


Categories
  • Civil Engineering Interview Questions Civil Engineering (5085)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4451)
  • Electrical Engineering Interview Questions Electrical Engineering (16632)
  • Electronics Communications Interview Questions Electronics Communications (3918)
  • Chemical Engineering Interview Questions Chemical Engineering (1095)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (239)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (259)
  • Instrumentation Interview Questions Instrumentation (3014)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (124)
  • Power Plant Engineering Interview Questions Power Plant Engineering (172)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (25)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1379)