Air channels - Equivalent diameter

Table that from the dimensions of the square ducts, goes back to the equivalent diameters of the circular ducts

This table created by Itieffe is a fundamental tool for engineers, designers and air conditioning and ventilation professionals. It offers practical guidance for converting square duct dimensions to equivalent circular duct diameters, simplifying the design and selection of air distribution systems.

In this introduction, I want to underline the importance of flexibility in the design of air ducting systems. The choice between square or circular ductwork can depend on various factors, including available space, airflow requirements and designer preferences. This table provides a practical solution for converting between these two forms of funnels.

The main features and benefits of this table include:

Instant conversion: the table provides a quick and direct conversion between square duct dimensions and equivalent circular duct diameters, avoiding the need for complex mathematical operations.
Wide coverage: Common square duct sizes, ranging from small to large cross sections, are provided, along with corresponding equivalent circular diameters.
Efficient use of space: This tool is particularly useful when you need to optimize available space, as square ductwork can be easier to place in some contexts.
Custom Design: allows designers to choose the shape of the ductwork based on specific project needs and space constraints.
Various applications: the table is suitable for a variety of applications, from residential ventilation to complex industrial systems.
Simplification of the decision-making process: helps HVAC operators make informed decisions in ductwork design and selection, ensuring proper airflow in distribution systems.

The main objective of this table is to simplify the process of designing and selecting air ducting systems, allowing greater flexibility in choosing between square and circular ducting. This tool is a valid ally for optimizing efficiency and comfort in HVAC systems, while ensuring intelligent management of space and resources.

The program is also present on the site: “Calculation of equivalent channels diameter” which also allows reverse sizing (from circular to quadrangular).