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1 / 13 energy-producing urban blocks

overlapped city | 重疊城市

Format| 形式: Research at Harvard Graduate School of Design, Boston,USA|美國哈佛設計學院設計研究
Year | 年份: 2012
Type | 類型: regional masterplan | 城市新能源規劃及城市設計
Size | 規模: 400 sqkm | 400 平方公里
Location | 地點: West Houston, Texas, USA | 美國,德克薩斯州,西休斯頓

Award | 獎項: 2013 ASLA Honour Award | 美國景觀協會(ASLA)優勝獎 city 02.jpg
2 / 13 current polarization of the energy market |

Energy production in the post-fossil era will be dominated by renewables.
Even though renewable energy has a low power density that requires dramatically larger areas to meet our cities demand, it is more compatible with urban conditions and more flexible with spatial application than fossil-fuel-based systems. Furthermore, renewable energy production can take place at various scales and its distributed production pattern can take advantage of the micro-grid, a more efficient and resilient distribution mode.

后化石能源時代的能源生產將會被可再生資源所主導。和化石能源相比,可再生能源的生產顯然需要占據更大的面積才能產生足夠的能量以滿足城市需求,但可再生能源與城市環境更加相互協調、更能靈活地適應各種用地。另外,可再生資源分散式的傳輸模式能夠利用更高效、更靈活的微電網而有效節能。 city 03.jpg
3 / 13 West Houston: green corridors based on the existing water system

Traditional cities, which are solely energy consumers, are facing both the challenge and the opportunity of accommodating energy production within their footprints. This challenge will be even bigger with the ambition of managing urban growth in more compact models of development.
Historically, political, religious and geographic agents have defined our cities. In the new era, the logic of energy production and distribution will start having a significant impact on the spatial organization of the urban growth.

傳統城市僅僅是是能源的消費者,在新能源時代,從城市內部解決部分供能問題成為可能,這既是挑戰,也是機遇。若以緊湊且高密度的模式組織城市擴張,這種挑戰將會更加艱巨。歷史上,傳統城市多由政治、宗教以及地理因素所定義。在新能源時代,能源的生產與配置將會深刻地影響城市空間布局及其擴張蔓延的模式。 city 04.jpg
4 / 13 west Houston: definition of the clusters

This project explores the morphology of resilient post-fossil cities across three scales: redefining urban boundaries and urban clusters, energy infrastructure framework and a new set of urban codes.
Our proposal tries to generate spatial synergies between energy and other urban parameters in the three scales.
The testing site is in West Houston, the fastest growing urban area in the US, with a rich potential for renewable energy production.

我們選取了美國休斯敦西面的新區作為實驗場地,這是美國人口增長最快的地區,并分布著豐富的太陽能和風能,具有巨大的可再生能源生產潛力。 city 05.jpg
5 / 13 urban cell prototype: building typologies and energy potentials

Parametric tools help recognize the different energy potentials associated with various massing strategies. A series of dynamic relationships links the traditional parameters of density and height with the energy productivity of each block, as a way to motivate developers to maximize their local energy production. The design of urban typologies is articulated following the concept of “overlapped city”: maximizing active surfaces and overlapping multiple programs in compact urban areas.

參數化的分析設計方法允許我們把城市建筑形態和不同能源的生產潛能聯系起來。我們建立了這樣一種激勵機制:每塊用地的開發者需要在用地內進行能源生產為自身提供一定比例的功能,由此在傳統城市設計中諸如限高、容積率等參數與新能源的生產率間建立了一種復雜而動態的聯系。建筑類型的設計體現了“重疊城市”的概念,即最大化功能性表面,使同一緊湊地段可兼顧城市活動和能源生產的多重功能。 city 06.jpg
6 / 13 urban cell prototype: renewable energy potentials

A policy of inter-block energy balance incentivizes the citizens to maximize their local energy production and reduce their reliance on the centralized energy supply, making the new city work as a resilient ecosystem. In such context, different degrees of flexibility can be allowed in order to adapt to the market economy. New patterns of energy specialization arise, defining the blocks that are more prone to production and the ones that are more prone to consumption. Through a system of energy “trading” a cluster meets its overall energy production target through the compensation among the different blocks and the creation of additional energy sources within the green corridors.

我們提出街區間的能源平衡措施,促使市民最大化能源生產,并降低對集中式能源供應的依賴,使得新城市稱為一個彈性的生態系統。為避免僵化的能源目標規劃,形成靈活互動的能源市場經濟,我們允許街區間存在互補的差異化:城市中將產生不同屬性的區塊,一些相對耗能,一些相對產能。區塊之間可交易能源,以實現城市總體能源目標。此外,城市還可結合綠化空間創造一些以產能為主的區塊以彌補總體產能的不足。 city 07_v2.jpg
7 / 13 catalogue of energy-related building typologies

As a result of the new urban code, some new interesting and highly diverse spatial conditions and relationships arise, disclosing the potential of this approach to create new paradigms of urbanization. Thus a variety of radically different scenarios are generated, tested and evaluated.

這一套基于能源邏輯的城市導則將可能催生出新的空間關系與體驗,展開一種與以往不同的城市化模式。我們還假設了城市發展的不同場景,并對其相應的城市形態進行測試、分析和評估。 city 08.jpg
8 / 13 inter-block energy balancing policy city 10_v2.jpg
9 / 13 energy resilient urban cell prototype city 10.jpg
10 / 13 urban cell prototype adaptability to different local energy productivity targets city 12.jpg
11 / 13 regional phasing strategy and energetic targets city 13.jpg
12 / 13 regional masterplan implementation city 13_v3.jpg
13 / 13 vision 2050
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