碩士生: 林俊憲
畢業年分: 2022年1月
論文名稱: 生質燃料流化床結合史特靈引擎之熱電聯產系統設計與性能分析(中文) / Design and performance analysis of combined heat and power system incorporating with a fluidized bed and a Stirling engine(英文)
中文摘要:
在本篇研究中，將進行生質燃料流體化床結合史特靈引擎之熱電聯產系統設計與性能分析，在實驗裝置方面，本研究採用市售之火箭爐烹煮平台(80×52×75cm)，並將底下之燃燒段改為自製流體化床燃燒爐，並在平台上方架設低溫型史特林引擎進行發電。為了確保熱電聯產系統發電產熱的穩定，即是指史特靈引擎及水盤的受熱端穩定，所以確認流體化床的穩定性以及所能操作的條件區間是不可或缺的，經過操作區間測試，流體化床的進料量定於9.5~11.5 g/min之間，約2.7~3.3 kW之間，而空氣流率則定於32~48 L/min之間。本研究依據流體化床的操作區設定了25組不同的實驗操作條件，並對其進行流體化床床材、流體化床出口、氧氣濃度，二氧化碳濃度、一氧化碳濃度和氮氧化物濃度的量測。最後再透過溫度以及廢氣量測結果，選出12組做熱電聯產系統的發電產熱。本實驗的研究成果，在未來可當作小型熱電聯產系統設計之參考。並且根據不同的發電產熱需求，來挑選合適的流體化床燃燒器kW數及空氣流率。
英文摘要:
This study investigates the design and performance of a small-scale combined heat and power (CHP) system that integrates a biomass fluidized bed combustor with a low-temperature Stirling engine. The experimental platform was based on a modified rocket stove cooking system (80 × 52 × 75 cm), equipped with a custom-designed fluidized bed combustor for biomass conversion and a Stirling engine for power generation. Stable operation of the CHP system required ensuring both fluidized bed stability and reliable combustion conditions.
The biomass feed rate was maintained between 9.5 and 11.5 g/min, corresponding to 2.7–3.3 kW of input power, with airflow rates ranging from 32 to 48 L/min. A total of 25 experimental conditions were examined, focusing on combustion and emission characteristics through measurements of oxygen, carbon dioxide, carbon monoxide, and nitrogen oxides in the exhaust gases. From these, 12 conditions were selected for CHP operation based on temperature stability and flue gas analysis.
The results demonstrate that system stability and performance depend strongly on the interplay between biomass feed rate and airflow, and they provide practical guidelines for selecting combustor power ratings and airflow parameters. These findings serve as a useful reference for the development and optimization of small-scale biomass-based CHP systems.
