建廠節能規劃驗證與儲能系統效益之探討—以某半導體封測廠為例

隨著科技的進步，台灣科技業的蓬勃發展，尤其在半導體產業投入的人才與經費，已成台灣製造業之最。而近年國際開始重視製造業所造成的溫室效應問題，使得產業未來將面臨更嚴謹的國際條約與全球的科技競爭，故降低企業的碳排放量與生產成本，已成半導體工廠最重要的課題。本研究以某半導體封裝測試廠為研究案例，建廠前回顧相關節能文獻與他廠用電數據，由文獻得知空調系統較具節能效益，因此建廠時針對四項空調設備進行節能改善，四項空調設備為：FFU(過濾風機)、MAU(外氣空調箱)、Dry Coil Pump(乾盤管)、冰水系統Pump(CWP、CHP)。在廠房建置完成兩年後，透過設備額定電流、設備設計參數、FMCS監控數據進行四項空調設備的節能驗證，藉由收集以上用電數據進行耗能計算，由驗證結果顯示109年節能量為3,057,503 kW、節電費為7,643,757元。政府在《再生能源發展條例》修法制定「用電大戶條款」，為因應未來修法與台電備用容量不足的挑戰，本研究選擇儲能系統進行效益評估，此次研究的電池組是由汰役鋰電池搭配超級電容組合而成，透過PWM電池延壽功能與MATLAB電腦模擬進行實驗測試，由實驗結果顯示，電流與電壓均穩定收斂可達放電控制。在了解電池組可行性後，藉由儲能系統削峰填谷的特性搭配廠內109年日用電需量進行效益估算，估算結果顯示109年如有設置儲能系統用電費將可節省為552,660元。

關鍵字

半導體產業；工廠節能；儲能系統

並列摘要

Technological progress over the years has led to prosperity of Taiwan’s technology sector, especially the semiconductor industry, which has recruited a great number of talent and spent a huge amount of operating expenses to lead the manufacturing sector toward greater success. In recent years, greenhouse gases that are emitted from a wide variety of manufacturing processes have started to draw global attention and spark concern within the industry. Hence stricter international agreements and fiercer competition in the global arena have ensued, while reducing carbon emissions and cutting back on production costs have become urgent issues for semiconductor factories. This study used an IC packaging and testing plant as an example. Before construction, a literature review on energy efficiency was conducted and electric power data were collected. As previous literature suggests that air conditioning systems may help to increase energy efficiency, the said plant decided to experiment with four types of air conditioning systems: FFU, MAU, Dry Coil Pump, and chiller systems (CWP and CHP). Two years after completion of the said plant, energy data of the four air conditioning systems were measured through rated current, facility design parameters, and a facility monitoring control system (FMCS). Then the energy efficiency performances of these systems were assessed and verified, showing that a total of 3,057,503 kW were saved, approximately reducing an expenditure of NTD 7,643,757. As the "High Energy User Clause" has been officially included in the Renewable Energy Development Act, this study deems it necessary to adapt to future laws and an impending challenge of insufficient capacity margin of Taipower’s system by assessing the feasibility of an energy storage system (ESS). To achieve that end, this study tried to combine retired Li-ion battery packs with supercapacitors using PWM and MATLAB to conduct experiments under simulated conditions. The results revealed that stably converged currents and voltages help to modulate electrical discharge. As integrating retired battery packs and supercapacitors proved to be feasible, this study adroitly implemented an ESS for peak-load shifting and then calculated its power consumption on a daily basis in 2020. It was estimated that if an ESS had been installed, it would have saved up to NTD 552,660.