Engineers use the testing data generated under this standard to select components that distribute air effectively without creating excessive noise or drafts. Core Metrics Measured
Standard 70 dictates the placement of pressure taps in the supply duct directly preceding the outlet to ensure accurate, repeatable pressure readings. D. Area Factor ( Akcap A sub k The effective area ( Akcap A sub k
The core document driving performance ratings for air distribution products is , which outlines the definitive laboratory methods for testing air outlets and inlets. However, anyone seeking an updated PDF must realize that ASHRAE Standard 70-2006 has been officially superseded by ASHRAE Standard 70-2023 , marking a significant evolutionary shift in how modern HVAC components like displacement diffusers and underfloor systems are rated. ashrae standard 702006 pdf updated
The distance the air stream travels and its vertical descent.
Standard 70 ensures that a diffuse terminal rated at NC 30 by Manufacturer A will sound identical to a diffuse terminal rated at NC 30 by Manufacturer B. 3. Throw, Drop, and Spread Engineers use the testing data generated under this
"Reaffirmed" (RA) indicates that the 2006 technical content was reviewed by a committee and found to still be accurate and relevant without needing major changes.
ASHRAE holds copyright. Using a pirated PDF for professional engineering certification exposes you to liability if your calculations are based on a bootlegged, corrupted copy. Area Factor ( Akcap A sub k The
establishes uniform laboratory testing methods to evaluate the aerodynamic and acoustic performance of commercial building air distribution components. This critical building ventilation standard provides specific testing procedures for diffusers, grilles, registers, and slots.