Mixed air in HVAC systems is the blend of return air from the building and outdoor air. Conventional control strategies waste significant energy by continuously maintaining the mixed air at a temperature cold enough to satisfy the building’s maximum cooling requirement. During most operating conditions this results in unnecessary overcooling, forcing the heating system to reheat the air to maintain comfort—a costly cycle of simultaneous cooling and heating.
150 Years of Actuators in One Room
From an 1874 patent to David Strain’s latest designs — this video puts them all in motion. Watch the fluid flow through each one. Understand how mechanical advantage actually builds. The history of actuator design, demonstrated side by side.