Transition to a sustainable urban energy system from a long-term perspective: Case study in a Japanese business district

This paper investigates alternative prospects for an urban energy system from a long-term perspective in order to achieve a reduction in CO₂ emission by more than 50% of the current emission in the Japanese commercial sector. This will assist in making strategic choices with regard to the implementation of available technologies in order to create a substantial change. A simulation model based on the bottom-up approach – a fundamental part of the evaluation framework of technology implementation scenarios – provides insights into the changes required in all the components of urban energy systems from the equipment level to the entire building and systems level and finally to the neighborhood and city levels. This model is applied to the Yodoyabashi district, a central business district in Osaka, Japan, in order to predict the end-use energy consumption and CO₂ emission under various scenarios. This is based on different concepts of community energy management. The results of this case study suggest that we can achieve a reduction of 60–90% of the current CO₂ emission by the middle of the 21st century.     

"红色年代"——刘家琨的"都市写作"

“红色年代”是成都有名的酒吧，酒吧所在的大楼此前是烂尾楼，从烂尾楼到火红的“红色年代”，都市活力得到复兴。运作，而不是设计!成功的空间运作，源于刘家琨的“都市写作”。     

中国城市分区规划研究的回顾与展望

作者从中国城市分区规划的由来与发展过程入手，分析了分区规划目前面临的问题，并对分区规划研究的发展作出了初步展望。     

都市乐队的指挥--城市设计

城市规划的完成,并不能保证建设工程就会有序推进,特别是只有总体规划没有详细规划的城市,或只有修建性详规而没有控制性详规指导的城市;在规划和具体工程之间,我国的许多城市都普遍地缺少城市设计这一环节.呼吁并从苏州工业园区来说明城市设计这一环节的重要和必须.     

世博会展馆建筑结构成就回顾

回顾并总结了 15 0年来世博会场馆建筑的结构创新历史和取得的主要成就。     

城市改造中的土地产权问题探讨——德国和中国台湾、香港地区经验借鉴

土地产权问题是城市改造的核心难题之一。通过对德国和中国的台湾、香港地区相关经验的介绍，本文试图探讨井为我国内地城市改造中的土地产权问题提供借鉴。     

Effect of building integrated photovoltaics on microclimate of urban canopy layer

Building integrated photovoltaics (BIPV) has potential of becoming the mainstream of renewable energy in the urban environment. BIPV has significant influence on the thermal performance of building envelope and changes radiation energy balance by adding or replacing conventional building elements in urban areas. PTEBU model was developed to evaluate the effect of photovoltaic (PV) system on the microclimate of urban canopy layer. PTEBU model consists of four sub-models: PV thermal model, PV electrical performance model, building energy consumption model, and urban canyon energy budget model. PTEBU model is forced with temperature, wind speed, and solar radiation above the roof level and incorporates detailed data of PV system and urban canyon in Tianjin, China. The simulation results show that PV roof and PV façade with ventilated air gap significantly change the building surface temperature and sensible heat flux density, but the air temperature of urban canyon with PV module varies little compared with the urban canyon of no PV. The PV module also changes the magnitude and pattern of diurnal variation of the storage heat flux and the net radiation for the urban canyon with PV increase slightly. The increase in the PV conversion efficiency not only improves the PV power output, but also reduces the urban canyon air temperature.     

理论与实践的趋进--关于"汉正街"研究的若干问题思考

面对“汉正街”这一特殊的研究案例,作者试图探索一种与传统空间分析和研究不同的方法。提出了注重身体的介入和日常世界的研究,通过理论与实践的不断趋近, 使城市空间的研究保持开放的姿态。     

缝合城市机动性与可持续发展的裂痕——中欧大学联合城市规划设计竞赛之回顾

现代城市的发展很大程度上依赖高效运转的城市交通系统。城市交通的改善的确给我们带来了便利，促进了地区的发展，但大型城市变通设施割裂了城市的肌理，湮灭了城市的特性，我们的城市正在变成一堆堆构筑物的集合体，滚滚车流在带来商机的同时也带来了日益严重的环境问题，导致城市品质的退化。如何保持机动性与可持续发展之间的协调是我国城市普遍面临的巨大挑战，这既需要先进的理念，更需要不同专业知识、不同文化背景的专业人员的其同探讨。以“城市机动性和可持续发展”为主题由中欧四国六所大学联合举行的的城市规划设计竞赛，标志着一种全新的探讨。我们相信法国动态城市基金会的一系列学术活动必将会影响到城市交通规划的价值取向。     

景观规划设计中的城市湖泊保护

城市湖泊作为城市中最重要的自然要素,开发利用过程中的保护问题至关重要。结合《玄武湖景观区总体规划》的实践,从环境生态层面,就湖泊水体本身保护、湖泊流域的宏观保护,结合国外对于城市湖泊流域的相关规划设计条目、准则,确定了湖泊流域范围内的水质保护原则方法;从视觉景观层面,就高度的保护控制、风格风貌保护控制、景观时间变化控制提出了原则方法;从人文活动层面,就历史人类文遗产的保护、人类景观活动的保存延伸进行了探讨。