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Numerical optimization of a novel ceiling radiant cooling panel combined with wall attached ventilation system

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Title: Numerical optimization of a novel ceiling radiant cooling panel combined with wall attached ventilation system
Authors: Ye, Minzhi Browse this author
Serageldin, Ahmed A. Browse this author
Nagano, Katsunori Browse this author →KAKEN DB
Keywords: Radiant ceiling panel
Wall attached ventilation
Response surface
Sensitivity analysis
Issue Date: Aug-2021
Publisher: Elsevier
Journal Title: Case Studies in Thermal Engineering
Volume: 26
Start Page: 101066
Publisher DOI: 10.1016/j.csite.2021.101066
Abstract: The warm draft that floats from the window has an unfavorable influence on the indoor thermal comfort condition, which heated the indoor air temperature. Therefore, an integrated cooling system combined novel free-suspended ceiling radiant cooling panel (CRCP) with a wall Attached Ventilation (WAV) system is proposed and investigated by using a three-dimensional conjugated computational fluid dynamic (CFD). Two different WAV systems (ceiling inlet/ceiling outlet; ceiling inlet/floor outlet) are examined under various operating conditions. Moreover, the surface response, sensitivity analysis, and optimization of the system's operating condition are carried out via the ANSYS Design Explorer tool. In conclusion, adding the ventilation system with a ceiling inlet and ceiling outlet is more effective than installing a ceiling inlet and a floor outlet. Moreover, the operating conditions with the inlet air velocity of 0.164 m/s, inlet air temperature of 25 degrees C, and panel surface temperature of 23 degrees C are selected as the optimum design. Under this condition, the system can prevent warm draft effectively and achieve better thermal comfort using a lower ventilation flow rate, higher ventilation temperature, and higher panel surface temperatures. Thus, it also shows a significant potential of energy-saving accordingly.
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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