A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Comfort-based control for mixed-mode buildings
International thermal comfort standards are applicable for the design and operation of either mechanically cooled or naturally cooled buildings and limited guidance is given for mixed-mode buildings. In this study, a control framework for mixed-mode buildings was defined based on the adaptive comfort model and PMV-PPD method. The proposed framework was tested using a simulation-based analysis of a central module of an office building. The results were compared with a mechanically cooled building. The objective was to characterize how to control mixed-mode buildings optimally, regarding both energy use and thermal comfort. Five locations were considered: Copenhagen - DK, Edinburgh - UK, Palermo - IT, Tokyo - JPN, and Zurich - CH. The mixed-mode control strategy had a primary energy use between 12 and 51 % lower than the mechanically cooled case. In this context, using the upper limit of the adaptive comfort zone as cooling set point rather than the upper limit of the PMV-based comfort zone showed nearly 20 % more energy savings and fewer switchovers between operation modes. Night cooling led to lower operative temperatures and fewer switchovers between operation modes as well as additional energy savings of 10 % only in Palermo. The results show that a mixed-mode building operated based on the adaptive comfort criteria can have a large reduction of energy use without compromising thermal comfort or indoor air quality, compared to a mechanically cooled building.
Comfort-based control for mixed-mode buildings
International thermal comfort standards are applicable for the design and operation of either mechanically cooled or naturally cooled buildings and limited guidance is given for mixed-mode buildings. In this study, a control framework for mixed-mode buildings was defined based on the adaptive comfort model and PMV-PPD method. The proposed framework was tested using a simulation-based analysis of a central module of an office building. The results were compared with a mechanically cooled building. The objective was to characterize how to control mixed-mode buildings optimally, regarding both energy use and thermal comfort. Five locations were considered: Copenhagen - DK, Edinburgh - UK, Palermo - IT, Tokyo - JPN, and Zurich - CH. The mixed-mode control strategy had a primary energy use between 12 and 51 % lower than the mechanically cooled case. In this context, using the upper limit of the adaptive comfort zone as cooling set point rather than the upper limit of the PMV-based comfort zone showed nearly 20 % more energy savings and fewer switchovers between operation modes. Night cooling led to lower operative temperatures and fewer switchovers between operation modes as well as additional energy savings of 10 % only in Palermo. The results show that a mixed-mode building operated based on the adaptive comfort criteria can have a large reduction of energy use without compromising thermal comfort or indoor air quality, compared to a mechanically cooled building.
Comfort-based control for mixed-mode buildings
Joaquín Aguilera, José (author) / Bogatu, Dragos-Ioan (author) / Berk Kazanci, Ongun (author) / Angelopoulos, Charalampos (author) / Coakley, Daniel (author) / Olesen, Bjarne W. (author)
2021-01-01
Joaquín Aguilera , J , Bogatu , D-I , Berk Kazanci , O , Angelopoulos , C , Coakley , D & Olesen , B W 2021 , ' Comfort-based control for mixed-mode buildings ' , Energy and Buildings , vol. 252 , 111465 . https://doi.org/10.1016/j.enbuild.2021.111465
Article (Journal)
Electronic Resource
English
Comfort-based control for mixed-mode buildings
| Elsevier | 2021
Thermal comfort in mixed mode buildings
| British Library Conference Proceedings | 2000
Occupant Comfort, Control, and Satisfaction in Three California Mixed-Mode Office Buildings
| British Library Conference Proceedings | 2000
Comfort standards and variations in exceedance for mixed-mode buildings
| Taylor & Francis Verlag | 2011
Mixed-mode buildings: A double standard in occupants’ comfort expectations
| Online Contents | 2012