Case Study of Quantifying Energy Loss through Ceiling-Attic Recessed Lighting Fixtures through 3D Numerical Simulation

Ri Na, Shengmao Lin, Zhigang Shen, Linxia Gu

Research output: Contribution to journalArticle

2 Scopus citations


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.

Original languageEnglish (US)
Article numberC5016003
JournalJournal of Architectural Engineering
Issue number1
Publication statusPublished - Mar 1 2017



  • Air leakage
  • Attic
  • Computational fluid dynamics (CFD)
  • Energy loss
  • Recessed lighting fixtures

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Visual Arts and Performing Arts

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