以生命週期成本探討臺灣既有建築物環境效率模型－－室內健康因子為例

A Study on the Module of Built Environment Efficiency (BEE) Adapted Life Cycle Cost (LCC) for Existing Buildings in Taiwan - Taking the Factors of Indoor Health as an Example

世界企業永續發展委員會WBCSD 以「投入」與「產出」為評估分群的「環境效率」與國際永續指標CASBEE 所提及之建築環境效率（BEE） ，即是以提高生活「品質」，同時降低環境「負荷」為論點評估永續環境，提升服務價值。本研究即是以「環境效率」觀點為理論架構，將其評估項目以「品質」及「負荷」加以分群，運用層級分析法尋求各分群項目權重值並導入生命週期成本，以屋齡13~24 年經室內健康環境因子評估改善之既有建築物（EB） 為量化實證案例，運用「投入」之改善成本與「產出」之性能改善平衡專家問卷結果，修正台灣專家所擬定之環境效率分群項目權重，初步建構以室內健康因子為例之台灣既有建築物環境效率模型（TBEE） 。

The World Business Council for Sustainable Development (WBCSD) estimated the eco-efficiency of the built environment by the ratio of 'input' and 'output', and international sustainable assessment tool, CASBEE, has also proposed the concept of eco-efficiency. The idea is to evaluate environmental sustainability based on the increase of the 'quality' of life and the decrease of 'loading'. This study therefore adopts 'eco-efficiency' with the viewpoint of Life Cycle Cost (LCC) as a theoretical structure and applies the AHP method for the weight values of assessing categories for existing buildings. Using buildings with a service life between 13 and 24 years as empirical cases to revise weight values for each assessment categories of built environment efficiency (BEE) for existing buildings (EB) as an approach. Finally, we take the factors of Indoor Environment Health (IEH) as a threshold preliminarily found as a model of BEE for the EB in Taiwan (TBEE).