Human response to thermal environment and perceived air quality in an office room with individually controlled convective and radiant cooling systems

Weixin Zhao*, Simo Kilpeläinen, Risto Kosonen, Juha Jokisalo, Sami Lestinen, Panu Mustakallio

*Corresponding author for this work

Research output: Contribution to journalConference articleScientificpeer-review

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Abstract

The purpose of this study is to analyse the human response to the indoor climate with two individually controlled convective and radiant cooling systems: a low velocity unit combined with radiant panel system (LVRP) and a personalized ventilation system combined with a radiant panel system (PVRP). As a reference system without individual control, diffuse ceiling ventilation combined with a radiant panel system (DCV-RP) was also studied. In laboratory conditions, 10 males and 10 females gave subjective response to the indoor climate during various office activities. The results show that with the reference DCV-RP system, the indoor conditions were worse than with the LVRP and PVRP systems. The thermal sensation and perceived air quality with the PVRP system was better than the LVRP system. After a medium activity task, the thermal acceptability reverts faster with the PVRP than LVRP system. Compared with the PVRP system, the subjects preferred the higher airflow rate at the workstation with the LVRP system. Males preferred a higher airflow rate than females under the same conditions with both micro-environment systems. This research found that there was significant variation in the control preferences of the human subjects concerning the micro-environment, and this emphasizes the need for personalized control to ensure that all occupants are satisfied with the indoor conditions.

Original languageEnglish
Article number15002
Number of pages7
JournalE3S Web of Conferences
Volume246
DOIs
Publication statusPublished - 29 Mar 2021
MoE publication typeA4 Article in a conference publication
EventCold Climate HVAC Congress - Virtual, Online
Duration: 20 Apr 202121 Apr 2021

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