Orifice Design Calculator Demo. Size a gas/liquid orifice plate using ISO5167 (2003) International standard and Crane's Flow of Fluids through Valves equation 3.22, Fittings and Pipes, calculate the mass flow rate require for a certain orifice size and plot a profile chart of various mass flow rates vs orifice size. Orifice Flow Meter Calculators Large Bore Liquid Orifice Meter (ISO 5167) Large Bore Gas Orifice Meter (ISO 5167) Small Bore Liquid Orifice Flow Meter Calculator (ASME MFC-14M-2001) Small Bore Gas Orifice Flow Meter Calculator (ASME MFC-14M-2001). Latest Cryptocurrency Quotes in Excel 1 year ago.
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Description : Size a gas/liquid orifice plate using ISO5167 (2003) International standard and Crane's Flow of Fluids through Valves equation 3.22, Fittings and Pipes, calculate the mass flow rate require for a certain orifice size and plot a profile chart of various mass flow rates vs orifice size. The software can be used to size orifice plates / square edge orifices. Generate a Ms Excel based Engineering data sheet of results or print a summary....etc. Below is a list of main features: 1. Support S.I Units and English (U.S) Units of measurement 2. Save/Load results Results 3. Export Results to Engineering Data sheet in Microsoft Excel for editing 4. Print Results summary. Calculations 5. For Gas or Liquid 6. Orifices plates / Square Edge orifices 7. Size an Orifice using International Standard ISO 5167-2:2003 Edition 8. Size an Orifice using Crane's Flow of Fluids through Valves, Fittings and Pipes (Eq 3.22) 9. Support Corner tapping, D and D/2 tapping and Flange tapping for ISO method - D and D/2 tapping for Crane method 10. Calculate the Mass flow rate upstream of an Orifice 11. Calculate velocity, pressure loss, Reynolds' number, Coefficient of discharge, Beta, Cross sectional area and volumetric flow rate. 12. Includes Standard pipe sizes, schedules, thicknesses...etc. 13. Ability to plot a chart profile for Calculated Mass flow rates versus Calculated Orifice diameters
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As long as the fluid speed is sufficiently subsonic (V
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where location 1 is upstream of the orifice, and location 2 is slightly behind the orifice. It is recommended that location 1 be positioned one pipe diameter upstream of the orifice, and location 2 be positioned one-half pipe diameter downstream of the orifice. Since the pressure at 1 will be higher than the pressure at 2 (for flow moving from 1 to 2), the pressure difference as defined will be a positive quantity.
From continuity, the velocities can be replaced by cross-sectional areas of the flow and the volumetric flowrate Q,
Solving for the volumetric flowrate Q gives,
The above equation applies only to perfectly laminar, inviscid flows. For real flows (such as water or air), viscosity and turbulence are present and act to convert kinetic flow energy into heat. To account for this effect, a discharge coefficientCd is introduced into the above equation to marginally reduce the flowrate Q,
Since the actual flow profile at location 2 downstream of the orifice is quite complex, thereby making the effective value of A2 uncertain, the following substitution introducing a flow coefficientCf is made,
where Ao is the area of the orifice. As a result, the volumetric flowrate Q for real flows is given by the equation,
The flow coefficient Cf is found from experiments and is tabulated in reference books; it ranges from 0.6 to 0.9 for most orifices. Since it depends on the orifice and pipe diameters (as well as the Reynolds Number), one will often find Cf tabulated versus the ratio of orifice diameter to inlet diameter, sometimes defined as b,
The mass flowrate can be found by multiplying Q with the fluid density,
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