![Velocity measurement locations for round and rectangular ducts; velocity measurements should be taken at several locations representative of equal sectional areas across the duct cross-sectional area | Building America Solution Center Velocity measurement locations for round and rectangular ducts; velocity measurements should be taken at several locations representative of equal sectional areas across the duct cross-sectional area | Building America Solution Center](https://basc.pnnl.gov/sites/default/files/images/HVAC619_MeasureWHMV-10_FSEC_10-6-20.jpg)
Velocity measurement locations for round and rectangular ducts; velocity measurements should be taken at several locations representative of equal sectional areas across the duct cross-sectional area | Building America Solution Center
![Velocity profiles for a square duct based on Eq. 24, at a typical phase... | Download Scientific Diagram Velocity profiles for a square duct based on Eq. 24, at a typical phase... | Download Scientific Diagram](https://www.researchgate.net/publication/252385123/figure/fig3/AS:669295059161109@1536583785391/Velocity-profiles-for-a-square-duct-based-on-Eq-24-at-a-typical-phase-angle-of-p-4.png)
Velocity profiles for a square duct based on Eq. 24, at a typical phase... | Download Scientific Diagram
![Graph of Air Duct velocity captured versus air duct velocity produced... | Download Scientific Diagram Graph of Air Duct velocity captured versus air duct velocity produced... | Download Scientific Diagram](https://www.researchgate.net/publication/320579379/figure/fig4/AS:669269025120282@1536577578933/Graph-of-Air-Duct-velocity-captured-versus-air-duct-velocity-produced-by-laser_Q640.jpg)