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+ By kaupshenoyassociates
A case study on CO2 flow rate is shown in the screen shot. The result is consistent with other methods used by the industry in computation and difference is less than 0.5%. Flow models with governing equations are given separately for quick reference.
List of fluids:
Air, Steam, Water, Nitrogen, Oxygen, Hydrogen, Helium, CO2, Methane, Ethane, Chlorine, Ammonia, Argon, Hydraulic oil, Freon.
App gives four standard orifice design with recommended discharge coefficients as shown in the screen shot. It also gives the details of different parameters used in the computation of flow rates of liquid and gases. This model is valid even for nozzles, venturi-tubes and meters for which the default discharge coefficient (Cd) is unity.
Fluid inlet temperature and pressure, orifice geometry, pressure differential using standard pressure taps (ISO 5167), are the standard parameters required in the computation. Based on the orifice geometry, recommended discharge coefficient Cd is used. However, users can edit this using manufacturer’s data for more accurate results.
Unit of Measurement:
Users can toggle between SI and USCS unit standards. Based on type fluids the unit for the flow rate is shown accordingly.
Recommended Steps to follow:
1. Edit Fluid - select fluid, edit temperature and pressure.
2. Edit Cd - select orifice design and discharge coefficient.
3. Edit orifice dimensions, pressure differential data.
4. Calculate orifice flow and display results.
Tags: orifice flow, orifice flow equation, orifice flow coefficient, chlorine flow orrifice calculation, orifice flow meter calculation, orifice plate calculation, flowmetercalculation, screen discharge coefficient, flow measurement, orifice free air temperature.
Updated layout and app notes on standard gas flow rates. Results consistent with iOS app.