Mobile QR Code QR CODE : Korean Journal of Air-Conditioning and Refrigeration Engineering
Korean Journal of Air-Conditioning and Refrigeration Engineering

Korean Journal of Air-Conditioning and Refrigeration Engineering

ISO Journal TitleKorean J. Air-Cond. Refrig. Eng.
  • Open Access, Monthly
Open Access Monthly
  • ISSN : 1229-6422 (Print)
  • ISSN : 2465-7611 (Online)
Title Comparison of Ventilation Performance between Displacement Ventilation and Mixing Ventilation Installed in Factories with High Floor Heights
Authors Yong-Il Kwon
DOI https://doi.org/10.6110/KJACR.2023.35.12.625
Page pp.625-632
ISSN 1229-6422
Keywords 치환환기; 실내공기질; 국소평균공기연령; 혼합환기 Displacement ventilation; Indoor air quality; Local mean age; Mixing ventilation
Abstract Indoor air quality (IAQ) and thermal comfort are the most important considerations for the indoor environment as modern people spend more time indoors. Heating, ventilation, and air conditioning systems can maintain good IAQ and thermal comfort, which are increasingly important. It also provides optimal fresh or conditioned air to occupied spaces while effectively removing contaminants and excess heat. In addition, these systems are classified into a displacement ventilation system and a mixing ventilation system according to the air distribution method. Since the target building of this study is a factory with high floor heights, the lower area where workers are active must maintain high indoor air quality. This study was conducted to select an air distribution method that the workers were satisfied with. After evaluating the average temperature and average local mean age, it was confirmed that the displacement ventilation system was the optimal ventilation system.