Page 45 - 香港房屋委员会年报 Hong Kong Housing Authority Annual Report

主要工作
Key Achievements 43

環保屋邨 優質生活 Greener estates for better living quality
房委會採取多項環保措施，在公營房屋項目推動可 The HA undertakes a wide range of green initiatives in
持續發展其中一項措施是採用碳排放量估算方法， support of sustainable development in public housing
估算建築物在預計100年整個生命周期內二氧化碳 developments. One of them is Carbon Emission
的排放量，當中包括估算經由建築物料、建築構築 Estimation (CEE), a method for estimating the carbon
物、公用屋宇裝備裝置運作期間和拆卸工程中產生 dioxide emissions from buildings throughout the
的碳排放量，並以使用可再生能源和植樹等方法予 expected 100 years of their life cycle. CEE includes an
以抵銷。這做法有助我們改良屋邨的設計，以達到 estimate of carbon emissions generated by construction
長遠持續發展的目標。 materials, building structures, the operation of communal
building services installations and demolition activities,
為配合政府推廣使用電動車的政策，我們在新建的 off-set by actions such as the use of renewable energy
公營房屋停車場內安裝電動車充電設施。現時新建 and tree-planting. This enables us to improve the long-
的室內停車場有三成的私家車泊車位配備電動車充 term sustainability of our estate designs.
電器，而其餘七成的私家車泊車位也具備安裝電動
車充電設施的配套，讓我們可以因應需求安裝更多 In line with the Government’s promotion of the wider use of
電動車充電器。 electric vehicles (EVs), we have been installing EV charging
facilities in new public housing carparks. Currently, 30% of
此外，我們一直積極探討使用可再生能源，尤其是 the private car parking spaces in new indoor carparks are
太陽能。過去十年，在技術可行的情況下，我們都為 equipped with EV chargers, while the remaining 70% are
新的公共租住房屋發展項目安裝連接電網的光伏 also provided with EV charging-enabling facilities, thereby
發電系統。截至2021年3月底，我們已為123幢住宅 allowing more EV chargers to be installed as demand grows.
大廈裝設光伏發電系統，總發電量為1 100千瓦。
We have also been actively exploring the use of renewable
至於其他有利於可持續發展的工具，包括在設計時 energy, especially the use of solar energy. For the last 10
採用的「順應自然」設計原則和微氣候研究結果， years, we have been installing grid-connected photovoltaic
均有助我們對每個建築工地的地理環境和氣候常態 (PV) systems in new public rental housing developments
有更深入的了解。舉例來說，我們利用這些工具進 where technically feasible. Up to the end of March 2021,
行設計，使建築物更能善用日照和取得更佳的自然 we had installed PV systems with a total system capacity
通風效果。此外，在房委會的建築工程中，我們繼 of 1 100 kW in 123 domestic blocks.
續增加礦渣微粉的使用量。我們更在現有的建築
合約中，強制規定用於建造預製外牆和預製樓梯的 Other ongoing sustainability tools include the use of
混凝土，必須以礦渣微粉代替當中35%的水泥含量。 passive design and micro-climate studies in our design
我們現已展開研究，探討可否把礦渣微粉的應用範 work. We use these tools to better understand the geography
圍擴展至預製硬地面、預製板間牆和預製垃圾槽。 and the climate norms of each individual building site.
They enable us, for example, to design our buildings so
that they respond better to sunlight and benefit more from
natural ventilation. We have also continued to increase the
amount of Ground Granular Blast Furnace Slag (GGBS)
used in our construction. We have mandated that 35%
of the cement used for constructing precast façades and
staircases be replaced with GGBS in our current building
contracts, and have embarked on a study to ascertain the
viability of extending the use of the GGBS to precast hard
paving, partition walls and refuse chutes.
啟鑽苑連接電網的光伏發電系統
Grid-connected PV system at Kai Chuen Count