Pressure loss calculation of orifice plate

This video explained the Pressure loss calculation of the orifice plate.
After watching this video you will able to do the hydraulic calculations of the orifice plate. this video gives a brief explanation of why the orifice plate used in the orifice flow meter. explained what is a beta ratio. what is orifice?
how to calculate pressure drop in the orifice. how to calculate discharge coefficient of orifice meter etc.
To know How to calculate pressure drop in pipe please watch • How to calculate press...
For pressure drop calculation of orifice download excel sheet
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The following are questions are answered in this video.
pressure drop calculation in the orifice plate.
head loss calculation of orifice flow meter.
how to calculate the discharge coefficient of the orifice meter.
discharge coefficient of the orifice meter.
beta ratio.
head loss in orifice
pressure loss calculation.
calculate pressure loss in orifice.
orifice plate.
pressure loss calculation of orifice plate.
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[@marjoleintenhacken]

I think a factor 2 is missing in the second formula from the top in the video at t=4:10. In the Excel sheet it is included. Thanks a lot for this video and example sheet. Very helpful!

[@technoworks.]

Yep but spreadsheet is right

[@AhmadAjami-1992]

Thanks a lot, what standard are you relying on for this calc.?

[@TACurchorem]

Thank you

[@AhmadAjami-1992]

Thanks a lot dear, what standard are you relying on for this calc.?

[@Iskandar_manangin]

in your excel, beta = At/A, but in your explanation, beta = d/D. which one is correct?

[@brianwendland4070]

nice---very informative

[@technoworks.]

Dear friends please subscribe

[@draculawu8778]

The pressure loss coefficient correlation comes from "I. E. Idelchik - Handbook of Hydraulic Resistance (2008, BHB)". But in this book page 260, the beta is substituted by area ratio, i.e. beta^2, at time 3:35. Additionally, the calculation for phi in Idelchik's book, the fisrt coefficient is 0.25 rather than 2.5 at time 3:35. I wonder which one is correct ?

[@draculawu8778]

Besides, the excel sheet B25, calculating K, seems to put exponent 1.375 inside the bracket, which is a different form from this video.

[@russ972]

Where did you get your coefficient of discharge formula from on your excel spreadsheet?

[@russ972]

Is this applicable for air, assuming it is incompressible

[@davidbabb2539]

There is another discrepancy, in the workbook, Beta is the area ratio rather than the diameter ratio, resulting in a very different result.

[@technoworks.]

Beta ratio = area ratio= (diameter ratio)^2

[@russ972]

@@technoworks.the video clearly says otherwise

[@amareshmaddy3819]

How do u calculate the value in cell C4

[@luckyPiston]

Question pls; On the spreadsheet what numbers do i change if im flowing AIR instead of water ? is changing the formula at B5 enough ? tks

[@StudySolutionsWala]

Did you get the answer?

[@luckyPiston]

​@@StudySolutionsWala No not from this bot video , but i did get a spreadsheet from the PTS flow bench form that i found to be extremely useful.

[@StudySolutionsWala]

@@luckyPiston thank you for your response. Can you please share the link.

[@dayabannur1327]

Can we consider the orifice opening angle.

[@musker4076]

Is it really the pressure at section 2 lower than the pressure at section 3 ?????

[@srikanthmalladi9791]

the pressure at section 2 is the lowest. But Section 3 is always less than section 1

[@yonameistoby12]

Math is not my strong suit, but I have run some testing using your spreadsheet to come up with baseline expected results. In the test lab, the pressure drops I can recreate are 50-60% of the pressure drops the formulas in your spreadsheet give me. I think there may be a calculation error somewhere.

[@neilhamilton2091]

I wonder, is the K for the pressure drop where it is highest in the vena cava, or after it where the pressure is higher than the vena cava, but still lower than inlet pressure.

[@samar1977gh]

How to calculate the discharge coefficient when the flow in unknow? please I need this information

[@Jerseynar1]

What is your source for the coefficient of fluid resistance?

[@technoworks.]

handbook of hydraulics by I. E. Idelchik

[@jiayyi8045]

can i know the formula located at which pages?

[@russ972]

references to all your formulas?

[@luckyPiston]

u did'nt say pls or tks .....

[@fullonentertainment4007]

In Your orifice plqte calculation excel sheet... please check again for the correctness of pressure drop formula and coefficient of discharge formula... Something is wrong...

[@mehulkumarvpatel]

this excel seems made for water. When I entered N2 gas details for inlet condition of 2 m3/hr flow, 4 bar pressure and 45 deg C temp for 2 mm size orifice in 1 inch pipe, it did not return me any value. I used 1.165 as N2 density.

[@technoworks.]

It's not applicable for compressible fluid like gas.

[@davidbabb2539]

The excel workbook for this video has a small error. In cell B23 the formula for the flow coefficient φ uses 0.25 instead of 2.5 as shown in the video. I am guessing this is an error in the workbook rather than the video, correct?

[@technoworks.]

I will check and revert back to you

[@technoworks.]

The excel sheet is correct, flow coefficient values is 0.25.

[@soroushkaramian3948]

Assume