Automation and Controls for HVAC Systems

The design of control systems for HVAC systems is generally based on the design engineer's philosophy and exerience level.  This article cannot cover all possible HVAC systems in use today, nor can it cover all the control methods that can be applied to many of them to enhance their operation and efficiencies.  However, the reader should understand that the HVAC system itself, in controls components, and the building in whch it is installed should all be considered together as parts of a single, whole design.  Designers should remain flexible in providing the best possible system that can control, to various degrees of comfort required, different applications within the same building.  The system should provide this control with reasonable costs at the least possible energy use.

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