TY - JOUR
T1 - The role of design parameters on the performance of diffuse ceiling ventilation systems–thermal comfort analyses for indoor environment
AU - Sadeghian, Parastoo
AU - Rahnama, Samira
AU - Afshari, Alireza
AU - Sadrizadeh, Sasan
N1 - Publisher Copyright:
© 2022 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
PY - 2022
Y1 - 2022
N2 - Thermal comfort conditions profoundly affect the occupants’ health and productivity. A diffuse ceiling ventilation system is an air distribution system in which the air is supplied to the occupied zone with relatively a low velocity through the perforated panels installed in the ceiling. The current study evaluated the impact of diffuse ceiling design parameters, i.e. diffuse panel configurations and heat load distributions, on the thermal comfort condition of the occupants. In this regard, the computational fluid dynamics technique was used to evaluate thermal comfort conditions in a waiting room, meeting room and office. The central and dispersal configuration of active diffuse panels was considered. The PMV-PPD model was applied to evaluate the overall occupants’ comfort, while the draft rate was considered to assess local thermal comfort. The model validation was performed by comparing the collected laboratory measurement data. Overall, the results indicated that the central active diffuse panel configuration had a better thermal comfort than the dispersed one. The evaluation of dispersed configuration in realist scenarios, including office and waiting room, had the highest dissatisfaction, with a PPD value of 9%. Local thermal comfort assessment revealed that dispersed configuration had the highest draft rate of 14% in the office.
AB - Thermal comfort conditions profoundly affect the occupants’ health and productivity. A diffuse ceiling ventilation system is an air distribution system in which the air is supplied to the occupied zone with relatively a low velocity through the perforated panels installed in the ceiling. The current study evaluated the impact of diffuse ceiling design parameters, i.e. diffuse panel configurations and heat load distributions, on the thermal comfort condition of the occupants. In this regard, the computational fluid dynamics technique was used to evaluate thermal comfort conditions in a waiting room, meeting room and office. The central and dispersal configuration of active diffuse panels was considered. The PMV-PPD model was applied to evaluate the overall occupants’ comfort, while the draft rate was considered to assess local thermal comfort. The model validation was performed by comparing the collected laboratory measurement data. Overall, the results indicated that the central active diffuse panel configuration had a better thermal comfort than the dispersed one. The evaluation of dispersed configuration in realist scenarios, including office and waiting room, had the highest dissatisfaction, with a PPD value of 9%. Local thermal comfort assessment revealed that dispersed configuration had the highest draft rate of 14% in the office.
KW - Computational fluid dynamics simulation
KW - Diffuse ceiling ventilation
KW - Draft rate
KW - PMV-PPD model
KW - Thermal comfort
KW - Computational fluid dynamics simulation
KW - Diffuse ceiling ventilation
KW - Draft rate
KW - PMV-PPD model
KW - Thermal comfort
UR - http://www.scopus.com/inward/record.url?scp=85135948096&partnerID=8YFLogxK
U2 - 10.1080/17512549.2022.2109211
DO - 10.1080/17512549.2022.2109211
M3 - Journal article
AN - SCOPUS:85135948096
SN - 1751-2549
VL - 16
SP - 806
EP - 824
JO - Advances in Building Energy Research
JF - Advances in Building Energy Research
IS - 6
ER -