Print Email Facebook Twitter Performance evaluation of ventilative cooling systems for buildings under different control parameters and strategies Title Performance evaluation of ventilative cooling systems for buildings under different control parameters and strategies Author Hu, Yan (Hunan University) Liu, Zhengxuan (TU Delft Design & Construction Management; Hunan University) Ai, Zhengtao (Hunan University) Zhang, Guoqiang (Hunan University) Date 2023 Abstract Ventilative cooling is an energy-saving technology to diminish thermal discomfort and overheating risk of buildings, meanwhile achieving high indoor air quality (IAQ). However, there is still no optimal control strategy in practice, which considerably limits its application. This study developed a typical office building model to evaluate the performance of ventilative cooling systems with different control parameters and strategies for five typical cities in different climatic zones of China. Results showed that, when the control parameter was selected as the upper limit of satisfied comfortable zone by 90% of the occupants, the adaptive thermal comfort (ATC) model, which outperformed the other models in terms of outdoor air utilization, was not necessarily optimal in terms of energy efficiency. The outdoor air utilization potential based on the indoor dry-bulb air temperature (Td) and indoor operative temperature (Top) control was similar, but the energy usage varies considerably, especially in the hot climatic zones. When the overheating period controlled based on the thermal comfort models was the same, the energy usage would be underestimated by 16%–38% without considering the effect of radiant temperature. The ATC-based control could have up to 37% of energy-saving compared to thermostatic control, but inappropriately low limits could make it less advantages to achieve energy-saving. The energy-saving potential associated with the PMV and ATC controls showed a completely opposite trend in the different climatic zones. The analysis results indicate that eliminating the drawbacks of the lower limit in the ATC model is an effective way to demonstrate energy-saving effectiveness. The findings of this study will contribute to the effective improvement of the application potential of ventilative cooling in different climatic zones. Subject Control parametersEnergy savingIndoor air qualityThermal comfortVentilative cooling To reference this document use: http://resolver.tudelft.nl/uuid:f071a36d-2137-4339-806b-4ade51ab00e5 DOI https://doi.org/10.1016/j.jobe.2022.105627 Embargo date 2023-07-01 ISSN 2352-7102 Source Journal of Building Engineering, 65 Bibliographical note Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2023 Yan Hu, Zhengxuan Liu, Zhengtao Ai, Guoqiang Zhang Files PDF 1_s2.0_S2352710222016333_main.pdf 8.88 MB Close viewer /islandora/object/uuid:f071a36d-2137-4339-806b-4ade51ab00e5/datastream/OBJ/view