能源與環境議題日漸受到重視,於營建產業亦興起了綠建築的風潮。空調使用為建築主要耗能項目之一,自然是綠建築所強調的一環。綠建築專案執行成功與否,取決於跨領域專業間能否依據節能共識,發揮各自所長,而BIM (Building Information Modeling) 備有數位工具與充足的資訊,可供不同專業深化運用,且 能協調與整合各專業,構築協同平台。本研究旨在將BIM的解法導入空調領域,基於BIM數位化與跨領域跨階段整合的特性,提出整合評估建築低耗能空調系統之節能與經濟效益的流程,並開發輔助的介面程式以自動化該流程的運作。研究首先參考熱質傳相關理論與文獻,針對空調系統的熱交換行為,推導出合適的數學模型;同時也整理與空調系統相關之LEED (Leadership in Energy and Environmental Design) 認證項目,作為評估低耗能空調系統綠建築表現的依據;接著開發輔助介面程式以自動化擷取必要的資訊,基於前述的數學模型,計算並即時呈現建築低耗能空調系統之節能量、經濟效益、與LEED得點等評估結果。最後以台灣一個實際使用淺層地溫能空調系統 (一種應用淺層地表恆溫特性預處理空氣的低耗能空調系統) 的建築為案例,展示本研究所提出整合評估流程的適用性,與所開發程式模擬空調系統熱交換的精確度。
With the increasing importance of energy efficiency and environmental protection, green buildings are now emphasized in the architecture, engineering and construction (AEC) industry. Since the heating, ventilation, and air conditioning (HVAC) system consumes most of the energy in a building, its energy consumption should be evaluated carefully in advance, especially for a building toward a green one. To achieve such a goal, interdisciplinary professions need to be integrated. BIM (Building Information Modeling) has abundant information and is equipped with digital tools, so it is adequate to construct an integrated platform based on BIM for different professionals to communicate and collaborate with each other. Under this consideration, the purpose of this research is to set up an integrated procedure for assessment of green building performance by implementing BIM into the phase of HVAC design and develop a computer program for assisting engineers in utilizing the procedure. In this way, HVAC professionals can make their work more efficient and improve the design quality of HVAC system. To this end, this research firstly derives adequate estimation models based on theories and literatures of heat and mass transfer. At the same time, it sorts out HVAC related credits from LEED (Leadership in Energy and Environmental Design) as assessment criteria. Then, based on the models and the assessment criteria, the research develops a computer program for assessing quantitatively and automatically the energy-saving performance of a HVAC system. Finally, a case study is practiced. The research implements the procedure and exercises the computer program to assess the energy-saving, economic benefit, and LEED performance of the case that utilizes a ground source HVAC system in real time. The result of the assessment indicates that this kind of HVAC system does help the building achieve the energy-saving effect and economic benefits. The case study also validates that both the procedure and the computer program are feasible and applicable.