Performance evaluation of a multi-functional personalized environmental control system (PECS) prototype

Jun Shinoda*, Dragos-Ioan Bogatu, Futa Watanabe, Yosuke Kaneko, Bjarne W. Olesen, Ongun B. Kazanci

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

A prototype of a multifunctional, stand-alone Personalized Environmental Control System (PECS) was developed and evaluated. The prototype comprised an electric heating panel and an air terminal device (ATD) for supplying air cleaned by a filter and ultraviolet germicidal irradiation. A Peltier element was installed in the ATD for cooling the supply air. Experiments were conducted in a climate chamber to evaluate the performance of the prototype. Thermal manikin measurements were conducted to quantify the heating and cooling effects of the PECS. Tracer gas measurements using nitrous oxide with a breathing thermal manikin were conducted to evaluate the air distribution performance of the ATD. A human subject experiment was conducted with 24 university students (12 male and 12 female) at 18–28 °C room temperatures. The whole body heating and cooling effects of the PECS, in manikin-based equivalent temperature differences, were up to 1.3 K and 0.3 K, respectively. The ventilation effectiveness of the ATD was up to 1.4. The prototype was able to increase thermal acceptability at all tested temperatures for female subjects. For the male subjects, the thermal acceptability decreased with PECS at 28 °C, possibly due to their cooling expectations not being met. The Peltier element did not provide a noticeable cooling enhancement despite its high power use. The noise generated by the ATD fan and the smell of the ATD supply air acted as factors limiting the use of PECS. A holistic assessment of the IEQ factors and ergonomic factors is important for future development of PECS.
Original languageEnglish
Article number111260
JournalBuilding and Environment
Volume252
Number of pages16
ISSN0360-1323
DOIs
Publication statusPublished - 2024

Keywords

  • Personalized environmental control system
  • Thermal comfort
  • Equivalent temperature
  • Indoor air quality
  • Thermal manikin
  • Indoor environmental quality

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