- 學位論文
生質燃料與柴油掺合應用於柴油發電機之燃燒效能評估
Combustion performance of bio-fuel and diesel blends in a diesel generator
摘要
本研究目的主要是利用柴油發電機進行原油(痲瘋油、棕櫚油、無患子油、及桐油)、酯化油(酯化後痲瘋油及酯化後無患子油)、生質柴油(痲瘋樹生質柴油、棕櫚生質柴油、無患子生質柴油、及桐油生質柴油)及各別最適摻和比例之燃料的量測，同時於不同負載下分別取得引擎性能及排氣組成，進而與化石柴油相互比較評估。其中引擎性能主要可分為燃料消耗率、制動燃料消耗率、制動熱效率、以及排氣溫度。排氣組成的部分可分為氧氣殘餘、二氧化碳、一氧化碳、碳氫化合物、以及一氧化氮。本研究成果顯示引擎性能與污染物之排氣組成受到發電負載的影響比起所用燃料的影響較為顯著。此外本研究之不同燃料於最高負載(1.88 W)下操作皆具有較高制動熱效率及較低制動燃料消耗率。此外排氣組成中二氧化碳排放濃度、一氧化氮排放濃度、以及燃燒效率隨負載而上升，而一氧化碳及氧氣濃度則隨負載上升而下降。
並列摘要
An experimental study of the performances and emissions of a diesel generator is carried out using different bio-fuels derived from jatropha oil, esterified jatropha oil, jatropha oil methyl esters (JMEs), palm oil, palm oil methyl esters (PMEs), soapnut oil, esterified soapnut oil, soapnut oil methyl eters (SNMEs), tung oil, tung oil methyl esters (TMEs) and their blends with diesel compared to these using pure diesel. Engine performance of fuel consumption, brack specific fuel consumption (BSFC), brack thermal efficiency (BTE), and exhaust gas temperature and the exhausted concentrations of oxygen (O2), carbon dioxide (CO2), carbon monoxide (CO), hydrocarbons (HCs), and nitrogen monoxide (NO) were evaluated. The results showed the engine performance and pollutant emission concentration of a diesel generator were more sensitive to the output loading of electricity generation rather than the fuel type. Higher BTE and lower BSFC were clearly observed in the case of a higher output loading. Additionally, the concentrations of CO2 and NO in the exhaust gas as well as the combustion efficiency increased with higher output loadings, while the concentrations of O2 and CO decreased.