Convective Heat Transfer in Air Conditioning Ducting (Internal Flow)

Abstrak

The prominent selections of ducting systems are based on design and
size to determine the heat transfer and the impact of both ducting
designs based on temperature differences. By using cooling load
calculations such as the Rule of Thumb method and Ductsizer software,
the analyses calculated the respective rooms involved in this study. The
analysis's final finding revealed that the round (circular) duct has a
smaller pressure drop than the rectangular duct. Additionally, it is
discovered that a rectangular duct's temperature drop is significantly
higher than a volumetrically equivalent round one because of friction
between the fluid's moving particles and the duct's interior surfaces,
the wall's difficult curvature and shape due to the rectangular duct's
sharp corners, and the more challenging flow pattern. Apart from that,
the noise level is also higher for the rectangular duct compared to the
round duct.