Comparison of energy consumption between displacement and mixing ventilation systems for different U.S. buildings and climates

Shiping Hu, Qingyan Chen, Leon R. Glicksman

Research output: Journal article publicationConference articleAcademic researchpeer-review

33 Citations (Scopus)


A detailed computer simulation method was used to compare the energy consumption of a displacement ventilation system with that of a mixing ventilation system for three types of U.S. buildings: a small office, a classroom, and an industrial workshop. The study examined five typical climatic regions as well as different building zones. It was found that a displacement ventilation system may use more fan energy and less chiller and boiler energy than a mixing ventilation system. The total energy consumption is slightly less using a displacement ventilation system. Both systems can use a similarly sized boiler. However, a displacement ventilation system requires a larger air-handling unit and a smaller chiller than the mixing ventilation system. The overall first costs are lower for the displacement ventilation if the system is applied for the core region of a building.

Original languageEnglish
Pages (from-to)PART 2/-
JournalASHRAE Transactions
Publication statusPublished - 1999
EventASHRAE Annual Meeting - Seattle, WA, USA
Duration: 18 Jun 199923 Jun 1999

ASJC Scopus subject areas

  • Building and Construction
  • Mechanical Engineering

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