建築環境改善決策長久以來的課題是，如何在建築生命週期的設計階段，依據有限的預算與資源條件，合理地預測建築環境在使用階段的性能與負荷，進而達成符合『地球永續與人本健康』的最佳效率設計。
本研究藉由文獻回顧、相關建築環境評估指標方法探索、相關研究理論研討與目前建築設計現況分析後，進行初步的專家訪談，徵詢多方專家學者意見，歸納出具有台灣本土代表性的建築環境效率「建築品質」與「建築負荷」項目群組；以SD語意分析法(Semantic Differential Method)設計專家評價問卷，分析出各評估項目之影響強度與環境效率傾向，進而提出適切的「建築環境效率評估模型」。提供建築相關專業技術人員、研究人員、設計者、開發者、材料設備廠商、消費者等，評估建築環境效率之參考使用。
本研究可歸納以下幾點結論：
1. 本研究以「環境效率」的觀念，作為「建築環境效率」評估模型之架構基礎。
2. 從評估工具的文獻資料綜合比較分析得知，GBTool2005的評估操作皆較為彈性、完整及使用性高，故以其作為本研究「建築環境效率」評估模型之評估範圍參考依據。
3. 將本研究專家問卷調查結果，可得「建築品質」群組及「建築負荷」群組：評估結果認為「D.室內環境品質」為建築環境效率評估之建築品質中，最重要的評估指標群；而「D4.採光與照明」、「D2.通風」為最重要的兩個評估項目。「C.環境負荷」為建築負荷中最重要之評估指標群；其中以「C1.固體廢棄物」、「B1. 建築生命週期中主要能源總合」為最關鍵的兩項因子。
4. 「建築產業領域專家」相對於其他領域專家，明顯較不重視「C1.溫室氣體的逸散量」與「C4.污水與雨水」此二評估項目。「學術研究領域專家」相對於其他領域專家，明顯較為重視「C3.固體廢棄物」與「D5.噪音與音響控制」此二評估項目。
5. 國際間專家普遍認為：「室內環境品質」為建築品質評估部分之最重要評估項目群組。其中台灣專家與其他國際專家比較，更為關注「室內環境品質」方面的議題。

For a long time, the issue of building environmental improvement decision is, according to the limited budget and resource condition, how to predict rationally the quality and loading of the building environment of the completing stage in building design phase, and then reach the best efficiency design to accord with the
”Sustainability of earth and heath of human being”.
This research hopes with document retrospect, after assessing assessment tool exploring , relevant research theory and discussing and analyze with the present situation of architectural design at present in relevant, carrying on preliminary expert's interview, seek and ask the suggestions of experts and scholars in all fields, sum up groups of items with “Building Quality” and “Environmental Loading” of building environment that could represent the situation in Taiwan. At last, with the aid of Semantic Differential Method we analyze relationship between the items of the “Building Quality” and “Environmental Loading”. Finally, we build up the proper ”Building Environment Efficiency Model” to offer the relevant professional technicians, research member, designers, developers, material and equipment manufacturers, consumers to evaluate. Our major findings were as below:
1. This research refer to the concept of “Eco-Efficiency” and take it as the basis to build up the “Building Environmental Efficiency” assessment model.
2. With document retrospect of assessment tool, it shows that the evaluating process of GBTool2005 is more flexible, comprehensive and is used under many circumstances. So this research take it as the basis to build the “Building Environmental Efficiency” assessing model.
3. From the result of this research, we knew that the “Indoor Environment” category is the most important of the “Building Quality” Division. The “Luminance and Lighting” and “Ventilation” are the key item among the “Indoor Environment” category. On the other side, the “Environmental Load” category is the most important of the “Environmental Loading” Division. And the “Solid Refection” and the “Total amount of Energy used in Building Life Cycle” are the key item among the “Environmental Loading” division.
4. The experts of the “Building Industry Sector” are less concern about the issues of “Emission of the Greenhouse Gas” and “Gray & Rain water”. The experts of the “Academic Research Sector” are more concern about the issues of “Solid Refection” and “Noise and the Control of Acoustics”.
5. Experts in many nations generally consider that the “Indoor Environment” is the most important category of the “Building Quality” Division. Compared with experts of the nations, experts of Taiwan are obviously much more concerned about the issue of the “Indoor Environment”.

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