Hvac Duct Flow Measurement

For duct sides of 30 through 36 six points must be taken.

Hvac duct flow measurement.

Ductwork seal classes ductwork prone to air leakages. For duct sides shorter than 30 five traversal points must be taken 5 on each side 5 5 25. Hvac anemometer handheld cfm pro hvac anemometer ap 846a wind speed meter with backlight max min avg functions for measuring wind speed air velocity hvac air flow meter 4 4 out of 5 stars 90 58 99 58. Especially with respect to iaq requirements for minimum ventilation of occupied spaces the need for accurate reliable air flow measurement is a must have.

Larger hvac ducts indoor environmental conditions directly affect the health comfort and productivity of a building s occupants equipment longevity and overall energy costs. Duct velocity calculate velocities in circular and rectangular ducts imperial and si units online calculator. We offer two methods of hvac air flow measurement differential pressure and thermal dispersion giving you the option to choose how you measure your hvac air flow. It will depend on the shape of the duct itself.

Air flow and velocity due to natural draft air flow volume and velocity due to stack or flue effect caused by indoor hot and outdoor cold temperature difference. This video demonstrates two simple methods of measuring airflow in hvac systems to optimize the performance efficiency and comfort that is too often comprom. Accurate measurement of air velocity in hvac ducts provides the information needed to examine and calculate the optimal airflow in hvac systems. Now the question is how to measure cfm in a duct.

The grid lines which lay out the duct flow measurement points are traverses. The log linear method provides high accuracy 3 in flow totalization by measuring air flow closest the edges of the duct space preferentially.