Terminal box minimum airflow optimization of single duct air handling units

YoungHum Cho, Gang Wang, Mingsheng Liu

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

Abstract

Terminal boxes control space conditions in variable air volume (VAV) air-handling unit (AHU) systems. Terminal boxes either modulate airflow with a control damper or adjust discharge air temperature with a reheat coil. Terminal boxes will have a significant amount of simultaneous heating and cooling and AHUs will consume more fan power if the minimum airflow is higher than required. On the other hand, conditioned space will have indoor air quality (IAQ) problems with less air circulation if the minimum airflow is less than required. The objective of this study is to optimize the minimum airflow ratio to improve thermal environment and save energy consumption. In this study, the problem of current fixed minimum airflow ratio of terminal box is analyzed and variable minimum airflow ratio as an alternative is suggested. The results of this study show that variable minimum airflow ratio can stably maintain the set room air temperature and reduce energy consumption for varying heating loads compared to the conventional fixed minimum airflow ratio.

Original languageEnglish
Title of host publicationProceedings of the Energy Sustainability Conference 2007
Pages497-504
Number of pages8
DOIs
StatePublished - Dec 24 2007
Externally publishedYes
Event2007 Energy Sustainability Conference - Long Beach, CA, United States
Duration: Jun 27 2007Jun 30 2007

Other

Other2007 Energy Sustainability Conference
CountryUnited States
CityLong Beach, CA
Period6/27/076/30/07

Fingerprint

Ducts
Air
Energy utilization
Heating
Air quality
Discharge (fluid mechanics)
Fans
Cooling
Temperature

ASJC Scopus subject areas

  • Energy(all)
  • Electrical and Electronic Engineering

Cite this

Cho, Y., Wang, G., & Liu, M. (2007). Terminal box minimum airflow optimization of single duct air handling units. In Proceedings of the Energy Sustainability Conference 2007 (pp. 497-504) https://doi.org/10.1115/ES2007-36093

Terminal box minimum airflow optimization of single duct air handling units. / Cho, YoungHum; Wang, Gang; Liu, Mingsheng.

Proceedings of the Energy Sustainability Conference 2007. 2007. p. 497-504.

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

Cho, Y, Wang, G & Liu, M 2007, Terminal box minimum airflow optimization of single duct air handling units. in Proceedings of the Energy Sustainability Conference 2007. pp. 497-504, 2007 Energy Sustainability Conference, Long Beach, CA, United States, 6/27/07. https://doi.org/10.1115/ES2007-36093
Cho Y, Wang G, Liu M. Terminal box minimum airflow optimization of single duct air handling units. In Proceedings of the Energy Sustainability Conference 2007. 2007. p. 497-504 https://doi.org/10.1115/ES2007-36093
Cho, YoungHum ; Wang, Gang ; Liu, Mingsheng. / Terminal box minimum airflow optimization of single duct air handling units. Proceedings of the Energy Sustainability Conference 2007. 2007. pp. 497-504
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