By Robert Mudry, P.E.
Airflow Sciences completes construction of another large flow measurement tunnel
What's better than a 70,000 CFM air flow measurement tunnel? Two of them, of course.
Airflow Sciences has built and commissioned a flow tunnel for Stulz Air Technology Systems headquartered in Frederick, Maryland. Stulz is a global manufacturer of highly efficient temperature and humidity management products and solutions. The air flow tunnel will be used to measure flows and certify performance of their HVAC products. The tunnel design is in full compliance with ASHRAE 37 test protocols, and has an overall size of 12'x12'x30'.
Stulz 70,000 CFM air flow tunnel, built and commissioned July 2026
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Design, fabrication and installation of 70,000 cfm air flow tunnel for Stulz
This represents the latest of Airflow Sciences’ large tunnels and is a close cousin in design to the 70,000 CFM flow tunnel delivered and commissioned to Q-PAC in January 2026. Q-PAC, a manufacturer of fan arrays for the HVAC industry, uses this tunnel for product performance certification and R&D of new fan systems. This 12'x12'x30' flow tunnel meets all requirements of the AMCA 270 and 210 test protocols.
Q-PAC ACMA 270 flow tunnel, 70,000 CFM capacity, commissioned February 2026
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Scale model (1:40th) and CFD Simulation of Q-PAC flow tunnel
Airflow Sciences, of Livonia, Michigan, USA, has designed and manufactured custom flow measurement equipment since 1975. We supply flow tunnels of all sizes that feature fully automated operation and data collection.
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