Analysis of Carbon Reduction Potential for Residential Green Building Evaluation System

Abstract

<p>因應氣候變遷導致極端氣候現象加劇，世界各國開始致力於推動節能減碳相關政策，期望藉由減少溫室氣體排放量來達到永續發展目標。而綠建築因相關規劃設計與設施設備之選用，能有效降低建築物所帶來的環境汙染與二氧化碳排放量，被視為是建築產業邁向低碳、淨零排放的重要手段。爰此，在未來提倡減碳之趨勢下，綠建築的發展地位勢必將更為重要，同時也易使得綠建築相關減碳效益將更加被放大檢視。然過往對於綠建築節能減碳相關研究多著墨於技術層面，反而缺乏從根本制度面上分析現行評估指標系統所能帶來的相關減碳潛力與影響。故本研究透過專家問卷調查之方式，採系統性的歸納、分析，加以檢視我國現行綠建築評估指標系統中各評估指標項目的相對減碳潛力關係，同時釐清在現行評估指標系統規範下，住宿類綠建築所可能具備的減碳潛力情形。本研究首先透過文獻回顧，將我國「綠建築評估手冊-住宿類2015版」之評估指標項目相關內容定義為四大指標面向、九大指標群與三十一項評估要項；接著，運用層級分析法專家問卷調查，取得各指標項目在專家學者共識下的減碳潛力相對權重值，了解「日常節能」、「CO2減量」與「綠化量」等指標群及其相關評估要項較具減碳潛力；而除了現行住宿類評估手冊門檻指標外，「地面綠化」、「結構合理化」、「建築輕量化」、「屋頂綠化」以及「直接滲透設計」等評估要項，未來在基於節能減碳觀點下，建議可規範作為優先或必選取之評估指標項目。最後，本研究認為未來在積極邁向淨零排放下，於選用綠建築評估指標項目時，「除了選多還要選對，選對更要精確」，透過鼓勵選用具備較高減碳潛力的評估指標，並精進相關規劃設計內容，才能真正落實並有效促進整體綠建築節能減碳發展。</p> <p> </p><p>In response to the intensification of extreme weather phenomena caused by climate change, countries around the world have begun to promote policies related to energy conservation and carbon reduction, hoping to achieve sustainable development goals by reducing greenhouse gas emissions. Green buildings can effectively reduce environmental pollution and carbon dioxide emissions due to related planning and design and selection of facilities and equipment, and are regarded as an important means for the construction industry to move towards low-carbon and net-zero emissions. In the past, the research related to green building energy conservation and carbon reduction had mostly focused on the technical level, but lacked a fundamental institutional analysis of the relevant carbon reduction potential and impact brought by the current evaluation indicator system. In addition, the green building evaluation indicator system is rarely combined with practical cases for demonstration and comparison to clarify the effect of the evaluation indicator system in practice, which easily leads to the overall evaluation indicator system becoming a formality. Therefore, this study investigates the relative carbon reduction potential relationship of each evaluation indicator items in Taiwan’s current green building evaluation indicator system through systematic induction and analysis by means of expert questionnaires; meanwhile, this study also uses analysis results of expert questionnaires to clarify the carbon reduction potential circumstances that residential green buildings may have under the current evaluation indicator system. First, through literature review, this research defines the relevant content of the evaluation indicator items of Taiwan’s "EEWH-RS 2015" as four indicator orientations, nine indicator groups and thirty-one evaluation items. Then, use the AHP expert questionnaire to obtain the relative weight value of the carbon reduction potential of each indicator item under the consensus of experts and scholars, and understand that the indicator group such as "Daily Energy Saving", "CO2 Reduction" and "Greenery " and their related evaluation items are regarded as more carbon reduction potential. In addition to the current threshold indicators of the residential evaluation manual, evaluation items such as "ground greening", "structural rationalization", "building lightweight", "roof greening" and "direct penetration design" are suggested to be standardized as priority or necessary evaluation indicator items in the future based on the viewpoint of energy conservation and carbon reduction. Finally, this study believes that in the future, under the active move towards net zero emissions, when selecting green building evaluation indicators, “in addition to selecting more indicators, you must choose right ones, and must choose more precisely.” In order to implement and promote the overall green building energy conservation and carbon reduction development, it is effective by encouraging the concentrated selection of items with higher carbon reduction potential, and improving the relevant planning and design content for promoting the evaluation scores of each item.</p> <p> </p>