- 學位論文
小型分置式史特靈引擎應用於熱電共生系統之研究
Application of a Small Gamma Type Stirling Engine in Combined Heat Power System
摘要
本篇論文裡乃延續本研究室前代小型分置式史特靈引擎設計，改良其缺點。使用空氣為工作流體，填充壓力為一大氣壓。利用兩種熱源來測試這具引擎的性能，其一為利用電熱器與溫度控制系統來控制加熱溫度，其二利用氣化爐產氣來當作熱源並控制空氣流量，量測引擎在各轉速時的轉矩、軸功。 結果顯示本小型分置式史特靈引擎在電熱器加熱溫度分別控制在600、650、700與750℃時，轉矩與輸出軸功隨加熱溫度提高而升高。此實驗中最高轉矩與輸出軸功是在750℃加熱下，史特靈引擎在每分鐘111.16轉時可得到最高的輸出轉矩23N.cm，且引擎轉速在每分鐘為244.87轉時可得到最高的輸出軸功為3.59W。在熱電共生實驗方面，在氣化爐空氣進量6m2/hr操作下，史特靈引擎轉速在每分鐘124.84轉下有最高輸出轉矩22 N.cm，在每分鐘196.33轉下有最高輸出軸功3.29W。
並列摘要
In this study, the Stirling engine was changed with air as working liquid at an changing pressure of 1 atm. A gamma type Stirling engine was built base on the improvement of the previous design in the laboratory. Two tests were performed by using two different type of heat sources. The first test was conducted by means of an electric heater combined with a temperature controlling system. In the second test, the engine was driven by the energy generated from the combustion of syngas produced by a downdraft biomass gasifier. In both experiments. The torque and shaft power of the engine at different engine speeds were measured. Experimental results obtained by an electric heater, heating temperatures of 600℃, 650℃, and 700℃, and 750℃ indicated that the engine torque and shaft power increase as the increasing heating temperature. The maximum torque of 23N.cm was obtained at 750℃ and 111.6 rpm, a max shaft power of 3.59W was reached at 750℃ and 244.87 rpm. Test results of the combined heat and power system indicate that the Stirling engine can run smoothly and be continuously driven by the combustion heat of the syngas produced by the gasifier. A maximum engine speed of 463 rpm and a maximum shaft power of 3.12 W were reached in the tests performed.