What is the formula used to represent airflow in heating systems?

The formula used to represent airflow in heating systems is measured in cubic feet per minute (CFM). This unit quantifies the volume of air that moves through the heating system over a specific time frame, which is crucial for ensuring the system operates efficiently and maintains desired temperature levels. Proper airflow is essential for effective heating because it influences how well heat is distributed throughout a space.

CFM is a critical parameter in the design and analysis of HVAC systems, helping to ensure there is adequate air supply for heating and cooling. For instance, when calculating the heating load for a space, understanding the airflow rate in CFM is necessary to determine how much heating is needed to effectively warm the air being circulated.

In contrast, FPM (feet per minute) measures air velocity rather than volume, while latent and sensible heat relate to the thermal properties of air and energy transfer, but they do not specifically address airflow in terms of volume. Thus, CFM is the appropriate choice as it directly pertains to the concept of air movement critical for heating system performance.