BIM-LEBR：建築設計初期蘊含碳排可視化之工具開發

BIM-LEBR: A Tool for Visualizing Embodied Carbon in Early Design Stage via BIM Technology

我國在邁向2050淨零碳排的路上，建築是不可或缺的重要一環。我國在施行建築能效評估系統(簡稱BERS)管制使用碳排之後，接續提出了低碳(低蘊含碳)建築標示制度(簡稱LEBR)，以促進建築蘊含碳排的減量，成為建築的全生命週期碳排評估的兩個制度。本研究將LEBR之計算邏輯與建築資訊模型(BIM)結合，開發出一套BIM-LEBR的快速計算工具，可於建築設計初期階段呈現工程細項之數據，運用可視化編程導出生命週期蘊含碳足跡、減碳量等評估。本研究透過將BIM-LEBR運用於實務設計階段計算，以分析其適用性與減碳策略，其中LoD 300之案例反映了BIM-LEBR於建築構件碳排計算上之精確度，具有較接近實際施工之碳排量；LoD 100之案例則驗證了工具於規劃階段之可行性，評估結果能有效提供建築師減碳設計方案。

 

With the severe global warming aggravating, IEA has announced Net Zero by 2050 in 2021 to control global greenhouse gas emissions (GHG). To reduce the impacts brings by embodied carbon emissions. Taiwan implemented LEBR (Low-Embodied-Carbon Building Rating System) and BERS (Building Energy-Efficiency Rating System) to carry out LCA. LEBR enable assessment in design process, but not in a traditional calculate way as for its early stage assessment demands and several error data. This study development BIM-LEBR for integrated-assessment, which is automatic, precisely, and can be use in early stage. BIM-LEBR features BOQ (Bill of Quantity) and visual programming software which results in the data of life-cycle carbon emission and carbon reducing rate. By using BIM-LEBR in on-going projects in reality, there are two results in scenarios: Project in LoD 300 tells that BIM-LEBR is the priority of material calculating; Project in LoD 100 prove the early- stage reducing carbon potential by using BIM-LEBR.