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| Hauptseite > Publikationsdatenbank > Improving Energy Efficiency of Public Buildings by Influencing Occupant Behaviour using Dashboards and Gamification |
| Book/Dissertation / PhD Thesis | FZJ-2025-03460 |
2025
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag
Jülich
ISBN: 978-3-95806-840-7
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Please use a persistent id in citations: urn:nbn:de:0001-2602031007001.246262783802 doi:10.34734/FZJ-2025-03460
Abstract: The behaviour of building occupants plays a significant role in the energy-efficient operation of buildings. In fact, occupant behaviour is always implicated as a factor in the performance gap observed between the design performance of a building and its post occupancy performance. In order tomotivate energy-efficient behaviour in building occupants, strategies like eco-visualization and gamification have been successfully employed in the literature. This thesis introduces a suite of web-based software applications that aim to encourage thermal energy-efficient occupant behaviour in an office buildings. Behaviour change motivation is provided through the eco-visualization and gamification with real-time feedback and social competition, in addition to support for occupancy-based heating control. In the process of developing a occupant behaviour evaluation system, systematic analysis of strategies for designing such an evaluation system is developed in this thesis, resulting in the RMM(Rule-Model-Measurement) framework. This framework is then applied to develop the primary behaviour evaluation metric used in the thesis, called energy penalties. An experiment was designed to test the interventions in a real-world setting using naturally ventilated office buildings of ForschungszentrumJülich, where the focus of the experiment was on the setpoint temperature and ventilation habits of the occupants. The experiments demonstrated that the interventions had largely positive effects on occupant energy efficiency as reflected in ventilation styles and setpoint temperature. The mean daily energy penalties in the ventilation intervention group was 65% lower than that of its control group (1.66 kWh vs 4.67 kWh), with even lower penalties in the "activated" subgroup of the intervention group (0.74 kWh). In another test building that considered both ventilation and setpoint temperature, activated offices had 56% lower daily mean energy penalties than the control (1.91 kWh vs. 4.35 kWh), while in the pilot building, the energy penalties in the activated offices was 40% less than that of its control group (1.61 kWh vs. 2.94 kWh). All these effects were statistically significant and with large effect sizes. Furthermore, year-on-year thermal energy savings of about 18% (11.8 MWh) were realized in the pilot building where occupancy-driven heating was introduced. Furthermore, the results demonstrated superior energy efficiency in offices with full access to the system compared to offices without access as a result of more efficient window ventilation styles in the former. These results demonstrate the effectiveness of the developed systems in improving occupant thermal energy efficiency in public buildings.
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