近年來，隨著科技日新月異，能量的使用增長，為求減少環境氣候問題，本論文嘗試架設以太陽能為初始能源，期望設計出一個能量轉換系統來將太陽能源轉換成日常生活使用的能量。本論文設計混和系統，系統搭配SOFC(Solid Oxide Fuel Cell，簡稱SOFC)以及SOEC(Solid Oxide Electrolysis Cell，簡稱SOEC)，當在白天時SOEC將太陽能轉化成氫氣儲存，至夜間時氫氣透過SOFC系統化學反應釋放出電能使用。
本研究為了探討再生能源系統搭配SOFC系統和高低溫電解系統對於整體發電功率與效率的影響，進而以數值模擬的方式進行系統性能的分析。此外，為了提高系統能量使用以及貼近實際運轉狀態，本研究在系統迴路設計的過程中，結合熱交換器、熱機、製造熱水裝置輔助SOFC電池堆、SOEC電解池堆，達到完成的複合式迴路設計。另一方面，在數值計算針對熱交換器使用ε-NTU方法整合組件熱損失評估，結合熱機使用有限時間熱力學方法分析，完成系統熱質能平衡計算與性能評估。
此外，本文透過熱效率、電效率、產氫效率、總輸出電功、總輸出能量、熱損失、Exergy損失與Exergy效率等各項指標進行系統性能與效率的評估，並且透過探討溫度效應、空氣流率效應與燃料利用率等參數分析系統各項指標能力。經由分析可知，SOFC系統在輸出功率為53.67 kW下電效率可達60.72 %、熱效率可達85.28 %；SOEC系統在輸入功率為66.38 kW情況下產氫效率可達89.3 %、熱效率可達90.85。
透過完成本研究可以發現，雖然SOEC擁有較高的電解性能，然而在系統迴路的設計過程中，若考量系統損失與熱需求，故說明進行複合式系統分析時，除了考量系統單一模組性能外，亦需要考量系統迴路設計與組件熱損失的影響。本文之相關研究成果，可供未來產業實際迴路設計時，作為分析之依據，進而降低實驗建置之經費。

In recent years, with rapid advancements in technology and the increasing use of energy, efforts to mitigate environmental and climate issues have intensified. This thesis aims to design an energy conversion system that utilizes solar energy as the initial source to convert it into usable energy for daily life. The proposed hybrid system incorporates solid oxide fuel cells (SOFC) and solid oxide electrolysis cells (SOEC). During the daytime, the SOEC converts solar energy into stored hydrogen, which is then used at night to generate electricity through the SOFC system's chemical reactions.
This research investigates the impact of renewable energy systems paired with SOFC and high- and low-temperature electrolysis systems on overall power generation and efficiency. Numerical simulations are employed to analyze system performance. To enhance energy utilization and reflect real-world operating conditions, the system design integrates heat exchangers, thermal engines, and hot water production units to support the SOFC stacks and SOEC stacks, achieving a comprehensive hybrid loop design. Additionally, the ε-NTU method is used to evaluate heat loss in heat exchangers, and finite-time thermodynamics is applied to analyze thermal engines. This completes the system's energy balance calculations and performance assessments.
Furthermore, the system's performance and efficiency are evaluated using various indicators such as thermal efficiency, electrical efficiency, hydrogen production efficiency, total electrical output, total energy output, heat loss, exergy loss, and exergy efficiency. The study also analyzes the effects of temperature, airflow rate, and fuel utilization rate on these indicators. The analysis reveals that the SOFC system can achieve an electrical efficiency of 60.72% and a thermal efficiency of 85.28% at an output power of 53.67 kW. The SOEC system, under an input power of 66.38 kW, can achieve a hydrogen production efficiency of 89.3% and a thermal efficiency of 90.85%.
Through this research, it was found that although the SOEC exhibits high electrolysis performance, system design considerations must account for system losses and thermal requirements. Thus, in composite system analysis, it is crucial to consider the loop design and component heat losses in addition to the performance of individual modules. The findings of this research can serve as a reference for future industrial loop designs, potentially reducing the costs associated with experimental setups.

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