@article{31550,
  keywords = {Indoor Air Quality (IAQ), Ventilation, Smart buildings, Smart ventilation, Residential energy efficiency},
  author = {Jordan D Clark and Brennan Less and Spencer M Dutton and Iain S Walker and Max H Sherman},
  title = {Efficacy of occupancy-based smart ventilation control strategies in energy-efficient homes in the United States},
  abstract = {<p>Proper ventilation of residences is essential for occupant health and comfort, and is responsible for a significant portion of energy consumption in homes. This study examines a method for providing adequate ventilation in homes while reducing energy consumption and peak demand: "smart" control of ventilation through sensing of occupancy and modulation of ventilation fans. We first conducted a detailed simulation study of advanced California homes with several occupancy-based ventilation control strategies. We then look at how general these results are nationally through a second simulation campaign in 15 ASHRAE climate zones. All simulations compared equivalent indoor air quality situations and assessed energy savings benefits. A key difference from previous demand-controlled ventilation strategies is that our study includes the effects of building related contaminants that are continuously emitted, irrespective of occupancy status, consistent with the requirements in ASHRAE Standard 62.2{\textendash}2016. Under this new assumption, it is very difficult to extract substantial energy savings using only occupancy sensing. For the baseline strategy, savings were less than 10\% of ventilation energy and sometimes negative in all cases analyzed other than leakier 2-story homes. Addition of a pre-occupancy flush period increases savings somewhat, but savings are still less than 15\% other than in 2-story leakier homes.</p>},
  year = {2019},
  booktitle = {Building and Environment},
  journal = {Building and Environment},
  series = {Building and Environment},
  volume = {156},
  pages = {253 - 267},
  month = {03/2019},
  issn = {03601323},
  url = {https://linkinghub.elsevier.com/retrieve/pii/S0360132319301568},
  doi = {10.1016/j.buildenv.2019.03.002},
  language = {eng},
}