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Developing a roadmap for the modernisation of city quarters-Comparing the primary energy demand and greenhouse gas emissions

机译：制定城市住宅区现代化的路线图-比较一次能源需求和温室气体排放

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In this study, a new method based on 3D urban geometry in CityGML format is presented and used to evaluate the energy demand and greenhouse gas emissions during the different life cycle stages of a city quarter. The method is applied to a case study in Stuttgart/Germany, while considering the specific building characteristics of the city quarter. Four different development scenarios to reach a similar building standard for all residential buildings are assessed, which include either the refurbishment or the demolition and reconstruction or a combination of both. The total reduction of the primary energy demand for building operation is the same in each scenario. However, different production and construction energy inputs are needed for the four scenarios, which are highest for new constructions. The end-of-life energy demand is negligible by comparison. This leads to the conclusion that from the life cycle energy point of view, refurbishment to a high building standard is better than reconstruction under the condition that the structural condition of the building allows it. If the plan is to refurbish or partially reconstruct all buildings in a city quarter, a specific order needs to be chosen. This order has a high influence on the temporal development of the energy demand reduction of the city quarter. (C) 2016 Elsevier Ltd. All rights reserved.
机译：在这项研究中，提出了一种基于CityGML格式的3D城市几何形状的新方法，并将其用于评估城市小区不同生命周期阶段的能源需求和温室气体排放。该方法已应用于德国斯图加特的案例研究中，同时考虑了市区的特定建筑特征。评估了四个不同的开发方案，以使所有住宅建筑物达到相似的建筑标准，包括翻新，拆除和重建或两者结合。在每种情况下，建筑物运行一次能源需求的总减少量是相同的。但是，这四种方案需要不同的生产和建筑能源输入，这对于新建筑来说是最高的。相比之下，寿命终期的能源需求微不足道。由此得出的结论是，从生命周期能量的角度来看，在建筑物的结构条件允许的情况下，对高标准建筑进行翻新比对建筑进行翻新要好。如果计划是翻新或部分重建城市区域中的所有建筑物，则需要选择特定的顺序。该顺序对城市地区减少能源需求的时间发展有很大影响。 （C）2016 Elsevier Ltd.保留所有权利。

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