Energy and first costs analysis of displacement and mixing ventilation systems for U.S. buildings and climates
Author(s)Hu, ShiPing, 1970-
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In the past two decades, displacement ventilation has been increasingly used in Scandinavia and Western Europe to improve indoor air quality and to save energy. By using a detailed computer simulation method, this study compared 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 investigation covers five U.S. climatic regions and three different building zones. The study showed that a displacement ventilation system might use more fan energy and less chiller and boiler energy than a mixing ventilation system. The total energy consumption is slightly less with a displacement ventilation system. The displacement ventilation system requires a larger air-handling unit and a smaller chiller than the mixing ventilation system does. The first costs are lower for displacement ventilation if the system is applied in the core region of a building. In the perimeter zones, the displacement ventilation system needs a separate heating system, and the first costs are slightly higher.
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Architecture, 1999.Includes bibliographical references (leaves 44-46).
DepartmentMassachusetts Institute of Technology. Department of Architecture
Massachusetts Institute of Technology