In the formula x = sensible heat BTU/h / (1.08 X TD), what does "x" represent?

In the formula x = sensible heat BTU/h / (1.08 X TD), "x" represents CFM, which stands for Cubic Feet per Minute. This equation is commonly used in HVAC calculations to determine airflow. The formula essentially establishes a relationship between the rate of sensible heat transfer, the temperature difference, and the airflow required to achieve that heat transfer.

To break it down, the sensible heat BTU/h represents the amount of heat energy being transferred, while the term (1.08 X TD) combines a constant (1.08, which is derived from air properties) with the temperature difference (TD) to reflect the energy needed to change the temperature of air. Dividing the sensible heat by this product gives you the airflow in CFM needed to effectively handle that heat load. Thus, this formula is fundamental in designing and evaluating HVAC systems for heating and cooling efficiency.