我國為了實現2050年零碳排放的能源政策，將進一步增加對再生能源的依賴，同時，必須面臨再生能源的間歇性特性以及能量儲存的需求。為了解決這些問題，本研究探討一種基於固態氧化物燃料電池（SOFC）和固態氧化物燃料電解電池（SOEC）的能源系統。該系統利用太陽能產生過剩的電力於SOEC進行電解水生產氨氣，在夜間或再生能源供應不足時，將儲存的氨氣供應給SOFC系統進行發電。
本研究之目的是分析在不同操作溫度下，SOFC和SOEC系統的過電位損失、輸出（輸入）電壓、輸出（輸入）功率和效率隨電流密度變化的情況，以及探討燃料(水蒸氣)利用率對系統淨輸出（輸入）功率和系統效率的影響，並且利用子系統以確保在不同操作電流密度下，燃料和空氣進入SOFC/SOEC系統時能達到所需的溫度。最後，本文也比較氨氣和氫氣作為料源的SOFC和SOEC系統的優劣勢。
根據數值分析的結果可知，對於以氨氣為料源的SOFC系統，當操作溫度上升50K，活性過電壓與歐姆過電壓約分別下降0.12V(25.3%)與0.0032V(34.8%)，濃度過電壓上升約0.0008V(6.01%)，導致電池輸出的最大功率增加大約5.53 kW( 42.4%)。此外，當電流密度為3000A/m^2且燃料利用率70%，系統的淨輸出功率分別為7.41 kW(873K)、8.72(923K) kW、9.87 kW(973K)、11 kW(1023K) ，而系統效率分別為15.76%、27.82%、42%、58.53%，隨著燃料利用率上升至80%，對操作溫度973K以及1073K的系統淨輸出功率會分別下降0.07 kW以及1.12 kW，而系統效率會分別上升5.68%以及1.55%。
另一方面，在比較氨氣和氫氣作為料源的SOFC系統的結果顯示，對於在 873K、923K 和 973K 下運行的系统，當燃料利用率為70%時，以氫氣為料源的系統具有較高的最大淨輸出功率，然而當燃料利用率上升至90%時，會轉變為以氨氣為料源的系統具有較高的最大淨輸出功率，而模擬當中還發現，當燃料利用率為90％時，以氨為料源系統分別多出3.55 kW (873K)、5.58 kW (923K)、6.07 kW (973K)的最大淨輸出功率。
對於SOEC系統，在電流密度3000 A/m^2下，當操作溫度提高50K，產氨系統可以降低3.98 kW輸入功率，此外，電流密度為3000 A/m^2且水蒸氣利用率為70%時，產氨系統輸入功率分別為28.99kW(873K)、25.11kW(923K)、23.12kW(973K)、21.26kW(1023K)，而當水蒸氣利用率上升時，對於SOEC系統輸入功率和效率影響相當的微小。
另一方面，在比較產氨和產氫的SOEC系統的結果顯示，SOEC產氫系統所需之輸入功率小於產氨系統，而電解效率高於產氨效率；當電流密度在3000A/m^2且水蒸氣利用率為70%時，產氨系統分別需要額外輸入2.36 kW(873K)、2.59kW(923K)、2.84kW(973K)與3.32kW(1023K)的功率，產氫系統分別高出11.13%、14.57%、17.68%與22.17%的效率。

The objective of this study is to develop a numerical analysis model that combines solar energy, SOEC and SOFC. The model aims to store the excess renewable energy generated from electrolysis on weekdays to produce fuel through SOEC and to be used by the SOFC system at night. In this study, the performance of the SOFC and SOEC systems is analyzed from the point of view of temperature and utilization effects taking into account the heat losses in the heat exchanger and afterburning chamber, while comparing the performance differences between the use of ammonia and hydrogen as feed sources.
The results of the study show that when temperature and utilization effects are investigated, it is found that as the operating temperature increases, the total overvoltage decreases, leading to an increase in the output power of the solid SOFC and a decrease in the input power of the SOEC.
As the fuel utilization increases, the net output power of the SOFC system decreases at operating temperatures of 973K and 1073K. However, for SOFC systems operating at 873K and 923K, increasing fuel utilization does not affect the net power output. In addition, the input power of the SOEC system is relatively unaffected by water vapor utilization.

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