Mechanical & Materials Engineering, Department of


Date of this Version



Published in Journal of Architectural Engineering (2016), doi: 10.1061/(ASCE)AE.1943-5568.0000226


Copyright © 2016 American Society of Civil Engineers. Used by permission.


Abstract Air leakage through recessed lighting fixtures has been identified as a common issue that causes extra energy consumption in residential buildings. However, few quantitative studies in this area were found. As such, a preliminary assessment of the magnitude of this type of energy loss was conducted by using three-dimensional (3D) transient computational fluid dynamics (CFD) models. A hypothetical layout of recessed lighting fixtures was designed with boundary conditions of four different seasons, which were obtained from recorded roof/attic temperature data sets. The results of the study indicate that leakage of recessed lighting fixtures could be a significant channel of energy loss in such attic-related residential buildings, especially in the summer and winter.