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研究生(外文):Tsang-Hsin Lan
論文名稱(外文):Characteristic Study for Fuel Cell
指導教授(外文):Sy-Ruen HuangYieng-Chiang Wu
外文關鍵詞:Change Double Layer EffectCircuit Model of the Fuel CellFuel CellOhmic of Polarization Areas
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This thesis main purpose is to design and make one to aim at, most heavy can quantity examine fuel cell capacity the test equipment of 3KW, and make use of this coming amount of equipment to examine various kinds of characteristic curves of the fuel cell, and the result examined to quantity verifies the accuracy that prove the test equipment built and constructed precise. On the other hand, probe into one Ohmic of polarization areas of the fuel cell, the circuit model that there is electric capacity effect and propose the new fuel cell, reference basis generating electricity and controlling as the future.
Also especially consider to the equipment and operation safety when the attendant examine and control in the on going amount under study for action, There are five main functions, as following: ( 1 ) The installation hydrogen leaks and detects the examining device. Because the hydrogen, for the extremely dangerous gas, its explosion lower limit is 4% of the thickness of air. So, when it is 1.5% that the letting out amount reaches and establishes (can be contingent upon every on-the-spot situation), namely has represented and already had a situation let out. The alarm bell will start ringing at this moment, movement that can remind on-the-spot personnel and stop being tested at once as soon as possible s, and close the total electromagnetic valve of the hydrogen rapidly. ( 2 ) Also install pressure perceiving devices additional on the pipelines of the hydrogen and oxygen. Can when examining, will let pressure of body lower than person who establish a spell among them on quantity, will also warn. Because only there is body left at this moment, will cause the phenomenon of electric unable complete response of chemical reaction. ( 3 ) When the operation temperature of what is certainly expects the battery is higher than the having value, will warn too. At the same time, will control the supply that the proportion valve cut off the hydrogen and oxygen automatically, avoid being damaged in order to protect the fuel cell. ( 4 ) When the output electric current of the fuel cell goes beyond the establishing value (also the situation of the load short circuit take place probably), must automatically controlled hydrogen and proportion valve of the oxygen also, close the supply of the fuel rapidly, will warn too by protecting the life-span of the fuel cell. ( 5 ) Under different conditions of operating, control the output of load. Because output ability of fuel cell has certain restriction, if offered excessively fuel and unable to is it is to produce the corresponding electric energy to output to increase. So, are also especially originally designing the systematic hydrogen and source of the oxygen and installing the float type flow meter additional, preset the possible greatest demand, consume in order to save the unnecessary gas.
中文摘要 i
英文摘要 iii
目錄 vi
圖目錄 viii
表目錄 xi
2. 第一章 緒論 1
1.1 研究背景與目的 1
1.2 內容摘要 3
第二章 燃料電池簡介 5
2.1 前言 5
2.2 燃料電池簡介 6
2.2.1 燃料電池的歷史 6
2.2.2 燃料電池的種類 6 鹼性燃料電池 8 熔融碳酸鹽燃料電池 8 磷酸燃料電池 9 質子交換膜燃料電池 9 固態氧化物燃料電池 11
2.2.3 燃料電池的工作原理 11
2.2.4 燃料電池堆 16
2.2.5 燃料電池之特點 18
第三章 燃料電池之特性 20
3.1 前言 20
3.2 電極熱力學 20
3.2.1 自由能與理想電位 21
3.2.2 理想電位與溫度之關係 24
3.2.3 理想電位與壓力之關係 27

3.3 電極反應動力學 33
3.3.1 Butler-Volmer方程式 33
3.3.2 極化 40
3.3.3 活化過電位 40
3.3.4 濃度過電位 47
3.3.5 歐姆過電位 51
3.3.6 極化曲線 52
3.4 效率 54
3.4.1 燃料電池的理想效率 54
3.4.2 燃料電池的效率 57
第四章 自製燃料電池測試平台之架設與量測 58
4.1 前言 58
4.2 燃料電池測試系統暨各元件介紹 58
4.2.1 浮子式流量計 58
4.2.2 氫氣防爆型壓力傳送器 60
4.2.3 質量流量計與比例閥 62
4.2.4 儲氣鋼瓶 64
4.2.5 分流器 65
4.2.6 NI PCI-6229資料擷取卡 66
4.2.7 Labview 8.0 69
4.2.8 氫氣洩漏偵測器 72
4.2.9 負載調整VR 74
4.2.10 伺服馬達控制 74
4.2.11 觸控式工業電腦 75
4.2.12 燃料電池 77
4.2.13 系統組成圖 78
第五章 燃料電池之動態特性 79
5.1 前言 79
5.2 燃料電池之動態特性介紹 80
5.2.1 燃料電池模型 80
5.2.2 燃料電池之電容效應 83
5.3 燃料電池之性能測試 86
5.3.1 自製燃料電池測試機之性能確認 86
5.3.2 燃料電池動態曲線量測 87
5.4 燃料電池等效電路模型修正 116
第六章 結論 118
參考文獻 120
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