屬於高溫燃料電池類的固態氧化物燃料電池(SOFC)，主要優點為其高效率表現與具有高溫廢氣的特性。一般SOFC本體之效率約為45~65%間，若將高溫型的SOFC結合GT進行發電，其發電效率可達70%左右，不過SOFC與GT兩者的操作特性與性能仍有相當差異，其中用來處理SOFC出口處高溫殘餘燃料的尾氣續燃器(Sequential Burner, SeqB)，便是兩者整合的關鍵之一。
　　本論文透過自行設計之GT測試平台，以一傳統燃燒室來模擬近似於SOFC出口的高溫氣流條件，其後則連接另一燃燒室來加入高溫的氫氣，以模擬SOFC/GT系統中之SeqB。藉由觀察溫度參數與GT的性能變化，來探討水汽添加與氫氣在高溫下的反應狀況。
　　實驗結果顯示，水汽的添加對於GT轉速的提升有正面的幫助，不過受限於系統管道配置，此水汽添加量有一個最佳值。在殘餘燃料添加試驗中，經由比較不同預熱程度的氫氣反應狀況，發現預熱溫度在450 ~ 600 ℃之間時；引擎負載設定為90%的狀況時，引擎性能幾乎都有些微的提升。不過在負載設定為100%時，引擎性能則隨著Uf(fuel utilization)上升而下降。而當預熱溫度在650~700℃之間時，則在所測試的負載與Uf條件下，氫氣幾乎有極高的燃燒效率，而對於引擎性能的提升也更加明顯。故預熱溫度乃是影響氫氣在SeqB中燃燒效率的主要因素。因此在SOFC/GT系統中，SOFC若屬於中低溫型(600 ~ 800℃)，則在越低溫的條件下，就需有較佳的混合與駐焰機制才能有效的處理殘餘燃料。

　　High performance and high temperature exhaust are two major characteristics of solid oxide fuel cell (SOFC). Electric efficiency of SOFC alone is among 45-65% in the state of the art, but it has potential to reach 70% efficiency if combined with gas turbine engine (GT). Among all of the integration problems, a sequential burner (SeqB) which is designed to burn the residual fuel and gain a higher temperature exhaust gas plays an important role to make a connection between SOFC exit and turbine inlet.
　　In this thesis, a turbocharger, a water injection system, fuel control systems and two combustors are used to construct a GT system to simulate the situation between SOFC exit and turbine inlet of a real SOFC/GT system. The water injection system is used to simulate the water addition at external reformer. The first combustor (Comb A) is used to create high temperature and similar compositions of SOFC’s exit gas. The second one (Comb B) is connected after the first one, and inject preheated Hydrogen to simulate the condition of SeqB.
　　In water addition test, it shows that water addition will increase the GT rotational speed. But due to flow channel capacity, there exists an optimal value. For residual fuel addition test, hydrogen is preheated before injecting into Comb B. The results show that even without flame holding or recirculation mechanism, hydrogen will have good combustion efficiency and preheating temperature is the dominate parameter for hydrogen burning in SeqB. When preheating temperature is among 450-600oC, hydrogen will have almost 100% combustion efficiency at 90% engine loading, and GT will get higher rotational speed for same energy input. But when engine operate at 100% loading, the combustion efficiency will decrease while fuel utilization (Uf) setting is increasing. When raising the preheated temperature to 650-700 oC, the combustion efficiency will increase rapidly. Among all the case discussed, the combustion efficiency is closed to 100%, and GT’s performance increase slightly also observed. Therefore, in SOFC/GT system operation condition, if SOFC is medium temperature type(600-800 oC), there should be some mixing and recirculation mechanism for complete combustion.

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