Which doas configuration is preferred? A simulation study in 5 U.S. climates

Shihan Deng, Josephine Lau

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Dedicated outdoor air systems (DOAS) are proved to be beneficial in many practices. However, not all DOAS configurations under different climates promise the same benefits. This paper presents a simulation study on evaluating various energy savings benefits of different DOAS configurations among diverse climate zones in the United States. Three DOAS configurations in a commercial building are simulated in this study: (1) fan-coil units (FCUs) as terminal unit with a DOAS unit which supplies conditioned outdoor air (OA) directly to each occupied space; (2) FCUs with a DOAS unit which supplies conditioned OA to the FCUs; and (3) a DOAS with active chilled beams. Simulation results indicated that DOAS energy savings ranged from 7.69% to 31.92%, as compared to simulated baseline. Suggestions were given with this study: a designer should consider supplying the conditioned OA directly to each occupied space with a DOAS, and employing active chilled beams as the local terminal HVAC units when it is possible.

Original languageEnglish (US)
Title of host publicationIndoor Air 2014 - 13th International Conference on Indoor Air Quality and Climate
PublisherInternational Society of Indoor Air Quality and Climate
Pages107-114
Number of pages8
StatePublished - 2014
Event13th International Conference on Indoor Air Quality and Climate, Indoor Air 2014 - Hong Kong
Duration: Jul 7 2014Jul 12 2014

Other

Other13th International Conference on Indoor Air Quality and Climate, Indoor Air 2014
CityHong Kong
Period7/7/147/12/14

Keywords

  • Different climates
  • DOAS
  • DOAS configurations
  • System energy performance

ASJC Scopus subject areas

  • Pollution
  • Building and Construction
  • Health, Toxicology and Mutagenesis
  • Computer Science Applications

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  • Cite this

    Deng, S., & Lau, J. (2014). Which doas configuration is preferred? A simulation study in 5 U.S. climates. In Indoor Air 2014 - 13th International Conference on Indoor Air Quality and Climate (pp. 107-114). International Society of Indoor Air Quality and Climate.