"Derivation of airflow characteristics for back-draft dampers" by Wei Guo and Darin W. Nutter

Building Simulation: An International Journal

Article Title

Derivation of airflow characteristics for back-draft dampers

Authors

Wei Guo, Mechanical Engineering Department, University of Arkansas, 863 West Dickson Street, MEEG 204, Fayetteville, AR 72701, USA
Darin W. Nutter, Mechanical Engineering Department, University of Arkansas, 863 West Dickson Street, MEEG 204, Fayetteville, AR 72701, USA

Keywords

back-draft damper, building modeling, airflow characteristics, pressure drop, airflow rate

Abstract

In an effort to improve building energy and indoor air quality models, relations to describe the airflow characteristics of back-draft dampers were determined. In particular, two equations were developed to represent the relationship between pressure drop and airflow rate for one-blade and multi-blade back-draft dampers. The equation for multi-blade dampers was validated by comparing the predicted results with available Air Movement and Control Association (AMCA) 500-D test data. The results showed that these two equations can be used to model the airflow characteristics of back-draft dampers.