新建商務型旅館建築低蘊含碳評估系統敏感度分析

Sensitivity Analysis of Low Embodied Carbon Rating System for New Business Hotel Buildings in Taiwan

因地球環境逐漸惡化，繼2015年《巴黎協定》推行，呼籲各國規定近零碳排相關法案，並且於2050年要全面達到淨零碳排的目標。而我國也響應推動「台灣2050淨零路徑」，訂出於2050年達到100%新建建築物與超過85%為近零碳建築的目標。依據當前國際最新全生命週期建築碳排評估標準EN15978（2011），建議淨零建築雙軌制度，以往都會忽略的蘊含碳排政策，隨著減碳策略逐漸完善，蘊含碳排的重要性得到重視，我國內政部建築研究所2022年推動建築能效評估BERS（Building Efficiency Rating System）作為評估使用碳排（Operation Carbon, OC），且在2023年推進低碳（低蘊含碳）建築評估手冊LEBR（Low Embodied-carbon Building Rating System），引領著重要地方政府如:新北市、台北市等實施與強化淨零碳排政策，本研究將透過新建旅館兩個案例分析蘊含碳排的碳排放量，以LEBR的評估系統分級，了解旅館案例的碳排佔比。研究運用案例進行敏感度分析檢視各項因子在建築全生命週期的佔比影響，發現優先注重室內地坪工程、內隔間工程及跨距變化係數，運用較減碳建築構件，就可達到良好的效果，方便日後新建旅館能更快速的找到減碳方向。

Climate change mitigation efforts following the 2015 Paris Agreement have prompted countries worldwide to establish near-zero carbon emission regulations, aiming for net-zero emissions by 2050. Taiwan has responded with its ''Taiwan 2050 Net Zero Pathway,'' targeting 100% of new buildings and over 85% of existing buildings to be near-zero carbon by 2050. The international standard EN15978 (2011) recommends a dual-track approach for net-zero buildings, emphasizing both operational carbon (OC) and embodied carbon (EC) emissions. In line with this, Taiwan's Architecture and Building Research Institute introduced the Building Efficiency Rating System (BERS) in 2022 to assess OC, followed by the Low Embodied-carbon Building Rating System (LEBR) manual in 2023 for EC assessment. Consequently, major local governments like New Taipei City and Taipei City have begun implementing stringent net-zero carbon emission policies.
This study analyzes EC emissions in two new hotel case studies using the LEBR assessment system. Through sensitivity analysis, we examine the influence of various factors on carbon emissions throughout the building's life cycle. Our findings indicate that prioritizing indoor flooring engineering, interior partition engineering, and optimizing span variation coefficients, along with employing carbon-reducing building components, can yield significant improvements in EC reduction. The research provides valuable insights for future hotel constructions, offering a framework to quickly identify effective carbon reduction strategies. These findings contribute to the broader goal of achieving net-zero carbon emissions in the building sector, aligning with global environmental preservation efforts.