照明系統ESCO節能績效研究－－以中部某區域教學醫院為例

A Study on the Lighting System ESCO Energy Conservation Efficiency in a Regional Teaching Hospital

我國有99%以上的能源須倚賴進口，提升能源使用效率刻不容緩；而排碳量增加是一個全球性關注的重要議題，節能減碳是機構必須善盡的社會責任。能源技術服務業（ESCO）統整工程、系統維護、保固服務，提升能源使用效率，提供節能績效保證，有助減少碳排放。中部某區域教學醫院2012年結合ESCO績效保證專案於LED照明燈具節能技術，本研究目的在記錄驗證ESCO績效保證專案之節能績效，以提供同業或異業專案執行之參考。本研究採用前測、後測資料收集之研究設計，比較「ESCO節能績效保證專案」介入與否，於用電量上的差異；依財團法人台灣綠色生產力基金會所公佈的「照明效率A-02方法」，依各式燈具母數數量取樣0.5~3%共57盞，採短期間量測燈具的電壓、電流、功率，以取得耗電量數據。改善前於2012年9月量測一次為基準線的耗電量（baseline），完工驗收後一個月內於2012年11月量測耗電量（post）驗證改善後的節能量，為第一階段驗證；並以照度標準為控制變項，採國家標準CNS5065照度測定法。改善前6,048盞燈具每年的耗電度數為2,531,426kWh，改善後7,021盞LED燈具每年的耗電度數為966,237kWh，其節能績效為61.8%，驗證其初期節電效益。照度量測值改善後之平均照度高於改善前，改善前後照度差異平均達──4.5%至460.7%。因僅進行至第一階段驗證，尚有為期三年每年一次之後續階段須再驗證，能更藉以瞭解此專案之長期效益。

Since the percentage of imports for energy is over 99% in our country, increasing the efficiency of energy use is urgent. Besides, because the issue of global carbon emission rise has gained worldwide attention, energy saving and carbon reduction should be the corporate social responsibility. Energy Saving Company integrates construction, system conservation, warranty service, and promotion the efficiency of energy consumption. In addition, ESCO offers promise of energy saving and also reduction of carbon emissions. A regional teaching hospital located in central Taiwan started an energy saving project in 2012, which applied ESCO to LED energy saving technology. The purpose of the study aims to investigate the effect of ESCO energy conservation, and to provide intervention strategy recommendation to the same or different business fields. This study compared the differences of power consumption after ESCO energy conservation efficiency project. We used ＂Light Efficiency A-02 Method＂ of Taiwan Green Productivity Foundation publication to measure the spot voltage, electric current, and power in fifty-seven lights, which were recruited 0.5~3% from all of lights with different types. The measurement before the project was taken as baseline values in September in 2012, while the evaluation of power consumption after the project finished as first verification in November. Illumination is designed with national standard CNS5065 as the control variable. The energy use of six thousand and forty-eight lights before the project is 2,531,426 kilowatt per year, while 966,237 kilowatt of seven thousand and twenty-one LED lights per year after the project. The energy efficiency of first stage evaluation is 61.8%. The average illumination after the project is higher than before, and the difference is rating from -4.5% to 460.7%. The further reevaluation is necessary to shed light on the long-term efficiency. The re-evaluation should last for three years.