公立大學小型普通教室之節電

Power saving of a small size classroom in public institute

本研究以某公立大學的小型專業教室（面積53.7m2）為對象，針對現有設施設備（即不投入資源與成本的前提下）透過情境模擬調查使用者的感知狀況進行研究，並以較省電的上課情境，實施相關的節能措施，進而篩選出優選的節能措施。研究結果顯示，第12種情境（白天關第1排、開2-4排的兩支燈管，且開啟2&3扇窗簾；功率292W）較第10種情境（白天關1&3排、開2&4排燈，且開啟2&3扇窗簾；400W）省電且兩者整體滿意度接近，故選擇第12種情境為本教室照明節能之因應對策。照明節電效益平均每月可節省15.50度用電（44%；可減少44.17元），照度從341.02Lux提升至552.11Lux。冷氣部份若實施隨手關門、溫度設定26~28度等相關節能措施，平均每月可節省89.08度（45%；可減少253.88元）；其他設備實施拔除未用電器設備之插頭，上課優先使用較省電的8號筆電，平均每月節省12.16度（40%；可減少34.62元）。本研究之案例教室總計平均每月可節省332.67元（43%），一年可節省近4,000元。本節電措施若能推廣至全校教室，可節省之電費必然相當可觀。

This research investigates the power saving of a small size classroom in public institute. The classroom was used as a site for simulation of 19 scenarios in which different usage combinations of the existing facilities in the classroom are used (without any extra investment of resource or cost). In the scenarios, the user perception and power consumption is measured and compared to find out which scenario is the most energy efficient without compromising user comfort. According to the experiment results, Scenario 12 (Turn off the 1st row light, turn on the 2nd－4th rows’ tubes, and switch on the curtains of the 2nd and 3rd windows) is more energy efficient than Scenario 10 (Turn off the light of the 1st and 3rd rows, turn on the tubes of the 2nd－4th rows, and switch on the curtains of the 2nd and 3rd windows) while its user satisfaction score is close to that of the latter. If the measurement for lighting in Scenario 12 are used for a month, a total amount of 15.50 kilowatts (44%), NT$44.17 can be saved on lighting while the illumination can be improved from 341.02 lux to 552.11 lux. With all the measurement of Scenario 12 implemented, a total amount of NT$332.67 (43%) can be saved monthly meaning that nearly NT$4,000 can be saved annually for the particular teaching space. If these energy-saving measures can be extended to all classrooms, the electricity savings can be considerable.