National University of Singapore

Nuttawut Lewpiriyawong

Poh Seng Lee

Chuan Sun

Kent Loong Khoo

The present disclosure generally relates to a heat exchanger () and a heat exchange unit () for the heat exchanger (). The heat exchange unit () comprises: a plurality of plain fins () stacked perpendicularly to a first plane, such that a first fluid () is communicable through the first plane between the fins (); and a plurality of tubes () for communicating a second fluid () therethrough for heat exchange with the first fluid (), the tubes () extending perpendicularly through the fins (), each tube () comprising an oblique cross-section () having a pair of opposing first sides () and a pair of opposing second sides (). For each oblique cross-section (), the first sides () are perpendicular to the first plane and the second sides () are angled approximately 60&#xb0; to the first plane, the first sides () being longer than the second sides ().

Growing community of inventors

Uttaradit, Thailand

Nuttawut Lewpiriyawong