校園室內環境中,為維持良好的舒適溫熱環境,使用空調系統達已為達降溫降濕之效果。然而室內環境之密閉性,在通風換氣不良的情況下,常導致室內空氣品質(IAQ)的不良問題,如二氧化碳濃度過高,進而影響教學品質與學習效率。 為增加室內新鮮空氣及節約能源,大多會以全熱交換器(Total Heat Exchanger,THE)作為改善室內空氣品質之手法,更可藉由中央監控系統隨著室內空氣污染的程度,改變其換氣量,進而達到節能減碳之目的。 有鑑於此,本研究以「健康」與「能源」兩面向,針對校園環境中室內空氣品質的實際量測與節能減碳之能源消耗關係作探討與評估,期望研究成果能給予校園相關政策與能源管理之建議,未來並提供給設計者、施工者與使用者應用與參考依據。本研究內容可整理歸納以下結論: 一、台灣地區室外二氧化碳濃度較高,每人最小通風換氣量應從15CFM(立方英尺/分鐘)提高至18.3 CFM以上,以符合台灣地區每人最小換氣量之標準。 二、室內人數與二氧化碳濃度上升速率關係。 1.使用全熱交換器能夠減緩二氧化碳濃度上升的速率。 2.當二氧化碳濃度趨近於飽和時,上升速率會逐漸下降至5ppm/min以下。 三、使用THE提供室內適當的換氣量,能夠有效的減少室內二氧化碳濃度的累積量,並且控制在800pppm以下。 四、THE的熱交換效率平均可達61.5%且每小時可省0.61度電。
In order to maintain a comfortable thermal environment in school, air- conditioning system has been a method for cooling and up to lower humidity.However, the sealed characteristic of indoor environment and poor ventilation usually bring about problems of indoor air quality (IAQ), such as concentration of carbon dioxide is too high, and affected the quality of teaching and learning efficiency. To increase the indoor fresh air and energy saving, Heat Reclaim Ventilation THE is the most part of techniques to improve indoor air quality, that can by the central monitoring system to change ventilation with indoor air pollution, and achieving the energy saving to get carbon reducing. This study has two result-oreinted, health and energy. Focus on indoor air quality in school, and assessed relationship between real-time measurement and energy saving to carbon emission reduction. Expect the research can give the proposed for related policy and energy management, and made available to designers, workers and user. This study summarization is following four conclusions: 1. The concentration of carbon dioxide is higher in outdoor, the minimum amount of ventilation for one person need from 15 CFM to more than 18.3 CFM。 2. The relationship between room number and ate of rise concentration of carbon dioxide. a. Using THE could slow the rate of increase concentration of carbon dioxide. b. When concentration of carbon dioxide is close to saturation, the rate of rise gradually decreased below 5ppm/min. 3. Using THE could effectively reduce the concentrations of carbon dioxide, and control in the following 800pppm 4. Using THE in heat exchange efficiency could up to 61.5% on average perhour for 0.61 kWh.