Results showed that sensitive and accurate measurements of volumetric flowrate can be achieved using mini VTAFs.
📌 3 Key Takeaways
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Objective & Hypothesis:Being one of the cheapest devices for air flow measurement within a wide range of flowrates, Venturi-type air flowmeters (VTAFs) can also be used for measuring very small air flowrates, usually less than 50 to 100 liters per minute, which is usually encountered in lab-scale applications.
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Key Findings & Data:Results showed that sensitive and accurate measurements of volumetric flowrate can be achieved using mini VTAFs.
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Conclusion & Impact:A diameter ratio of 0.6 for the venturi throat provides a minimum detection limit of 2.46 LPM while an overall pressure drop of around 115 Pa at an air flowrate of 50 LPM at 20°C.
Being one of the cheapest devices for air flow measurement within a wide range of flowrates, Venturi-type air flowmeters (VTAFs) can also be used for measuring very small air flowrates, usually less than 50 to 100 liters per minute, which is usually encountered in lab-scale applications. This study presents a model-based evaluation of VTAFs for lab-scale applications. The pressure and velocity fields in mini VTAFs were calculated by computational fluid dynamics (CFD) model using Ansys Fluent™. Results showed that sensitive and accurate measurements of volumetric flowrate can be achieved using mini VTAFs. A diameter ratio of 0.6 for the venturi throat provides a minimum detection limit of 2.46 LPM while an overall pressure drop of around 115 Pa at an air flowrate of 50 LPM at 20°C.
Demir, S. (2021). CFD ANALYSIS OF MINI VENTURI-TYPE AIR FLOWMETERS FOR LAB-SCALE APPLICATIONS. Sigma Journal of Engineering and Natural Sciences, Volume: 38 Issue: 2. https://ajindex.com/articles/1632592
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