Mapping the city scale anthropogenic heat emissions from buildings in Kuala Lumpur through a top-down and a bottom-up approach
Mapping the city scale anthropogenic heat emissions from buildings in Kuala Lumpur through a top-down and a bottom-up approach
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DOI：
10.1016/j.scs.2021.103443
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发表时间：
2022-01
影响因子：
11.7
通讯作者：
Kai Wang;Y. Aktas;L. Malki-Epshtein;Di Wu-;Muhammad Firdaus Ammar Bin Abdullah
中科院分区：
文献类型：
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作者：
Kai Wang;Y. Aktas;L. Malki-Epshtein;Di Wu-;Muhammad Firdaus Ammar Bin Abdullah
变暖的城市气候通过改变建筑物的热/冷负荷增加了建筑的能耗。另一方面，建筑引起的人为热排放也可以促进城市供暖，形成一个变暖反馈循环。这种影响在广泛使用空调系统的(亚热带和炎热/干旱地区)更为深远。因此，更好地了解建筑能耗及其对城市供暖的贡献有助于缓解城市供暖。为此，我们的目标是使用基于建筑能源模型的自下而上策略和基于国家规模能源库存的自上而下策略来估计马来西亚吉隆坡的建筑能源使用量和诱导热排放。我们进一步将建筑能量模型与不同土地利用区域的实测日温度分布相结合，讨论了城市热岛效应对能源利用的影响，以及通过不同的城市形态可能采取的缓解策略。通过自下而上和自上而下两种方法获得的估计能源使用量都在吉隆坡现有案例研究的实际能源使用量范围内。它还强调了采用多尺度战略的必要性，以减少建筑能源的使用及其对城市热岛的相关影响。
The warming urban climates increase the building energy consumption by changing the heating/cooling loads of the buildings. On the other hand, building induced anthropogenic heat emissions can also contribute to the urban heating, creating a warming feedback loop. Such impact is more profound in the (sub)tropical and hot/arid context, where Air Conditioning (AC) systems are widely used. A better understanding of the building energy consumption and its contribution to urban heating can therefore help mitigate urban heating. To this end, we aim to estimate building energy use and induced heat emissions in Kuala Lumpur, Malaysia, using both a bottom-up strategy based on building energy modelling and a top-down strategy based on national scale energy inventory. We further integrate the building energy model with measured diurnal temperature profiles at different land use areas, to discuss the impact of urban heat island (UHI) on energy use, and potential mitigation strategies through different urban morphologies. The estimated energy use obtained via both bottom-up and the top-down approaches were within the range of actual energy use from case studies available for Kuala Lumpur. It also highlights the need to adapt multi-scale strategies to mitigate the building energy use, and the associated impacts on the UHI.