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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Jensen, Rasmus Lund
Aalborg University
in Cooperation with on an Cooperation-Score of 37%
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document
AHU performance tracking during the building operation phase
Abstract
Building operation accounts for roughly 30% of the world's energy use, with the Heating, Ventilation, and Air Conditioning (HVAC) systems accounting for 30% of the energy use in commercial buildings. Therefore, it is important to ensure that these systems operate efficiently. Currently, there is a lack of Key Performance Indicators (KPIs)that focus on ensuring that the components in HVAC systems function adequately. Therefore, four KPIs have been developed in this study. Three KPIs focus on ensuring the proper contextual operation of heat exchangers in Air Handling Units (AHUs), and one KPI for assessing the proper supply temperature from the AHU. These KPIs were tested and evaluated on two datasets from operational AHUs supplying offices in an educational building in Denmark. To enhance the potential of the developed KPIs, virtual sensors were developed to monitor the air temperature between the heat exchanger and the heating/cooling coils on the supply side. These virtual sensors allow testing alternative KPI formulations that can be applied to AHUs that typically do not have this sensor installed, as it is unnecessary for control purposes and thus usually omitted.<br/> The developed KPIs offer a more comprehensive understanding of the heat exchanger's contextual performance than the traditional "heat recovery efficiency" KPI. Additionally, the performance of the virtual sensors was closely tied to the available data points. Among the virtual sensors tested, those based on the energy use of the heating coil alone or the combined energy use of the heating coil and fan demonstrated the best performance.<br/>Future studies could focus on validating the effectiveness of virtual sensors across different AHUs. Additionally, exploring the potential for real-time monitoring could enhance the understanding and practical application of these KPIs across the building's operational lifecycle.<br/>