Energy and first costs analysis of displacement and mixing ventilation systems for U.S. buildings and climates

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.

Department dc:contributor.department

Massachusetts Institute of Technology. Dept. of Architecture

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

1999

Author dc:creator

• Hu, ShiPing, 1970-

Advisor dc:contributor.advisor

• Qingyan Chen.

• Architecture

Statement dc:rights

• M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/1721.1/67521

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/67521