Diffuser Cfm Chart. A well-designed HVAC system is critical to building comfort.

A well-designed HVAC system is critical to building comfort. 3 This document discusses HVAC distribution systems including diffuser selection and layout, ductwork sizing, and the equal friction method. The document provides selection charts for various types of air diffusers and grills, including square, circular, linear slot, and linear bar grills, detailing their CFM (Cubic Feet per Minute) ranges and corresponding sizes. Multiply the Ak factor by the average velocity to obtain volume of air (CFM) supplied through diffuser. 2. Enter the **Grill W (in)** and **Grill H (in)** to calculate the **Grill Area**. The results update in real-time as you Sep 8, 2023 · On this chart, the 4th column is the 400 FPM column. Calculate the airflow (CFM/ft) by multiplying the average velocity by the Ak factor per foot which is 0. These linear slot diffusers feature fully adjustable, aerodynamic pattern controllers fabricated from extruded aluminum, and are available in a large selection of frame styles. The central core of the diffuser can easily be removed by means of pressure clips to obtain access to the volume control damper and the duct connection. fzguu0
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