| 摘要: | 全國大專院校總數約佔全國學校總數不到百分之二，但用電量卻高佔百分之六十以上。大學理應扮演積極的節能教育角色，因此若能針對耗能行為加以分析檢討，訂出積極有效的節能，必能建立大學生良好的能源使用習慣。過去校園用電分析著重在用電負荷，設施裝置容量等硬體耗能分析，但對於課程活動、氣候環境、用電習慣等因素對校園用電之影響則較少研究。本研究嘗試以用電資料、課程資料、氣候資料推估空調用電的比例、隨手關電的效益、電腦空轉的比例等節能資訊。 本研究以中央大學所建置之數位電力監測系統之連續用電資料為分析對象。取樣包含夏季平常日、夏季假日、冬季平常日、冬季假日、春節等期間六個監測電表每分鐘取樣資料，經數據調理後進行統計分析。 在同學期相同課表安排下，以冬季與夏季用電差代表空調用電量，分析結果顯示中大空調用電量在上課日至少佔27％以上，假日則約佔19％以上。 此外，以冬天假日凌晨時段用電量減去春節同一時段用電評估隨手關電節電效之益，結果顯示一年至少可省下49萬千瓦的用電，若以一度電2.1元計算，至少年省一百萬元的電費。 本研究同時評估宿舍學生電腦空轉的比例。以取樣之四間宿舍凌晨小時最低用電量扣除相同時段春節用電量，估計一年270天每天七小時之電腦空轉將浪費每年108,581KWH，約228,020元，由此可見中央大學若能積極落實電腦管理，仍有很大的節能空間。 Though less than 2% of schools are colleges and universities in Taiwan, electricity consumption of these higher education establishments exceed 60% of the total. While saving energy is a focus of higher education, if these establishments can further analyze the energy consumption behavior of students and thereby establish effective energy-saving policies, they can develop good energy-saving habits in students. Electricity load and hardware consumption, e.g. device capacity, were the foci of past studies on campus electricity consumption, factors such as course activities, climate, and electricity consumption habits were seldom studied. This study thus investigated the proportion of power consumption of air-conditioning, the efficacy of turning off unused appliances, and the proportion of idling computers based on electricity, course and climatic data. Data falling into the summer school days, summer holidays, winter school days, winter holidays, and Spring Festival sessions were selected from the continuous power consumption data retrieved from the digital electricity monitoring system implemented by National Central University (NCU). Data retrieved every minute from the meter for each session were arranged for statistical analysis. Based on the same course arrangement, the electricity consumption difference between winter and summer represents the air-conditioning electricity consumption. Results indicate that the air-conditioning electricity consumption at NCU on school days and holidays is over 27% and over 19% respectively. The efficacy of turning off unused appliances is obtained by subtracting the midnight electricity consumption during Spring Festival by that of the same time period in winter holiday sessions. Results indicate that at least 490,000kWh of electricity can be saved a year. When calculated at N$2.1 per kWh, a sum of NT$1 million is saved a year. This study also investigated the proportion of idling computers in 4 student halls by deducting the minimum hourly electricity consumption during the Spring Festival from that of the same time period on school days. Results indicate that a sum of 108,581kWh amounted to about NT$228,020 wasted on idling computers for 7 hours a day, 270 days a year. This suggests that there is a large space for NCU to save energy by enforcing more aggressive computer management. |
