Measuring Flow in Tight Spots

Often, one of the most challenging aspects of applying a flow-sensing device is the hunt. Tracking down the elusive and mysterious twenty diameters of straight, accessible pipe that the sensor manufacturer demands can be impossible at times. Let’s face it – it isn’t often that the Architect, Engineer, General Contractor, and all the subcontractors conspire […]

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The Time is Ripe To Do Something About Multi-Zone Air Handlers

Written by Gil Avery, P.E. – Reprint from September 1991 Insights Multi-zone blow-through air handlers were popular 20 to 40 years ago when energy was cheap. ¬†Fortunately these units are not as popular today. ¬†Because they have so many negative qualities, they are prime for retrofit and offer a real opportunity to save lots of […]

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