Application of terminal box optimization of single-duct air-handling units

Young Hum Cho, Gang Wang, Mingsheng Liu

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Terminal boxes maintain room temperature by modulating supply air temperature and airflow in building heating, ventilation and air-conditioning (HVAC) systems. Terminal boxes with conventional control sequences often supply inadequate airflow to a conditioned space, resulting in occupant discomfort, or provide excessive airflow that wastes significant reheat energy. In this study, the procedure for the optimal minimum airflow setpoint was developed to improve thermal comfort and reduce energy consumption. The determined minimum airflow setpoint was applied in an office building air-conditioning system. Improvements in indoor thermal comfort and energy reduction were verified through measurement. The results show that the minimum airflow reset can stably maintain room temperature, satisfy comfort standards and reduce energy consumption compared with the conventional control.

Original languageEnglish (US)
Pages (from-to)54-66
Number of pages13
JournalInternational Journal of Energy Research
Issue number1
StatePublished - Jan 1 2010
Externally publishedYes


  • Energy savings
  • Single-duct air-handling units
  • Terminal box

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology
  • Nuclear Energy and Engineering
  • Renewable Energy, Sustainability and the Environment


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