What is the recommended air flow per square inch of net free area?

The recommended air flow per square inch of net free area is 2.7 cfm. This value is based on industry standards for ensuring proper ventilation and air exchange in various systems, particularly in relation to maintaining efficiency in HVAC (Heating, Ventilation, and Air Conditioning) systems and other environments requiring controlled airflow.

In practical terms, 2.7 cfm per square inch of net free area helps to create an effective balance between airflow and equipment performance, minimizing issues such as reduced efficiency, overheating, and inadequate ventilation. This figure is often derived from studies and guidelines that take into account various factors including building codes, energy efficiency standards, and operational safety considerations.

Understanding this recommended airflow is crucial for professionals working in energy services, as it allows them to design systems that optimize performance while ensuring compliance with regulations and industry best practices.