Disabling Heat on a VAV for Summer
During the Summer, you might want to make sure that your heat is disabled on VAVs so that you don’t waste energy. This is especially true if you have electric heat strips as opposed to hot water coils, because you won’t have hot water when your boilers are off anyway. Continue reading George’s CBAS Tips, June 2018
In my last article, I discussed static pressure control and variable air volume (VAV) systems. I mentioned that by modulating the leaving air temp from an air handling unit (AHU) we can promote energy efficiency while also having an effect on static pressure. This time, we’ll look into how AHU supply temp sets the stage for efficient VAV operations.
Typically, VAVs are equipped with a means of reheating the supply air provided by the corresponding AHU. Continue reading AHU Supply Temp Sets the Stage
Static pressure is a key ingredient in a successful Variable Air Volume (VAV) system. It ensures that air flow will be available to enable the VAVs in a system to achieve their designed Cubic Feet per Minute (CFM) at maximum demand. Simply put, the push of the air must be greater than the resistance to the flow or no air will circulate through the ducts. Typically the setpoint for static pressure is determined through the course of the testing, adjusting, and balancing (TAB) at the end of a job. Continue reading Static Pressure Control and VAV Operation