JZUS - Journal of Zhejiang University SCIENCE

Journal of Zhejiang University SCIENCE A

Accepted manuscript available online (unedited version)

Impact of UHI and global warming on multi-energy complementarity optimization of buildings: application to typical office buildings in Hangzhou, China

Author(s): Qingqing MIAO^1, ^2, ³, Xiaoyu LUO^1, ^2, ³, Jiang LU⁴, Weijun GAO⁵, Yucong XUE⁶, Yifan FAN^1, ^2, ³, Jian GE^1, ^3, , Jiahong ZHAO^1, ^2, ³
Affiliation(s): ¹College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China ²Center of Balance Architecture, Zhejiang University, Hangzhou 310028, China ³Architectural Design and Research Institute Co. Ltd., Zhejiang University, Hangzhou 310028, China ⁴School of Civil Engineering and Architecture, Zhejiang University of Science and Technology, Hangzhou 310023, China ⁵Faculty of Environmental Engineering, The University of Kitakyushu, Kitakyushu 8080135, Japan ⁶China United Engineering Co. Ltd., Hangzhou 310056, China
Corresponding email(s): Jian GE, gejian1@zju.edu.cn
Key Words: Future climate change; Urban microclimate; Building energy performance; Building energy system; Multi-objective optimization

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Qingqing MIAO^1,^2,³, Xiaoyu LUO^1,^2,³, Jiang LU⁴, Weijun GAO⁵, Yucong XUE⁶, Yifan FAN^1,^2,³, Jian GE^1,^3,, Jiahong ZHAO^1,^2,³. Impact of UHI and global warming on multi-energy complementarity optimization of buildings: application to typical office buildings in Hangzhou, China[J]. Journal of Zhejiang University Science A,in press.Frontiers of Information Technology & Electronic Engineering,in press.https://doi.org/10.1631/jzus.A2500365

@article{title="Impact of UHI and global warming on multi-energy complementarity optimization of buildings: application to typical office buildings in Hangzhou, China",
author="Qingqing MIAO^1,^2,³, Xiaoyu LUO^1,^2,³, Jiang LU⁴, Weijun GAO⁵, Yucong XUE⁶, Yifan FAN^1,^2,³, Jian GE^1,^3,, Jiahong ZHAO^1,^2,³",
journal="Journal of Zhejiang University Science A",
year="in press",
publisher="Zhejiang University Press & Springer",
doi="https://doi.org/10.1631/jzus.A2500365"
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Abstract
Chinese Summary
Academic Network
Reviewer Comment

Abstract: Amid global warming and urbanization, building energy systems face the dual challenge of balancing growth in energy demand with environmental sustainability and resistance to future climate change. This study proposes a predictive framework that integrates the effects of future climate change and urban microclimate into energy consumption prediction and energy system optimization for typical office buildings in Hangzhou, China. First, optimal General Circulation Models (GCMs) from CMIP6 were selected through a performance evaluation, and statistical downscaling was employed to generate future typical meteorological year (TMY) data. Next, the Urban Weather Generator (UWG) was used to simulate urban heat island effects. Empirical formulas were applied to calculate urban wind speeds, while DesignBuilder was used to model solar radiation and hourly energy consumption. These data were then utilized to optimize the building energy system. The results reveal that future climate change significantly increases cooling demand (28.9%-103.0%) and reduces heating demand (19.7%-52.6%), with urban microclimates further amplifying these trends. The energy system optimization demonstrates that the net present value (NPV) of future climate and urban microclimate scenarios is 5.05%-16.65% higher than that of historical climate scenarios. Additionally, future climate scenarios result in higher peak energy demand, and thus necessitate larger system capacities to ensure reliability. While the initial required investment is higher, buildings optimized to account for global warming are more reliable and carry lower operational costs. We comprehensively quantify the effect of future urban microclimate on building energy systems, emphasizing its critical role in energy system planning, and providing insights for addressing the challenges of climate change and urbanization.

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