混元動力循環型汽電共生系統能質效益解析研究

Exergy Performance Analysis of Hybrid Power Cycle with Cogeneration Systems

連文成(Vin-Cent Lien)

指導教授 ： 莊嘉琛

國立臺北科技大學/機電學院/能源與冷凍空調工程系碩士班/碩士(2008年)

https://doi.org/10.6841/NTUT.2008.00472

摘要

隨著化石燃料日益減少，加上能源需求遽增及因燃燒而產生的空氣污染問題日益嚴重，世界各國皆積極投入發展低耗能且乾淨可行性替代之新能源技術，而燃料電池具有高能源效率，且無污染物排放，為一可被允許使用的乾淨能源技術，藉由其電化學反應的過程轉換產生電力，過程乾淨、安靜且較傳統燃燒發電有較高的效率，且可靠度相當高，可稱為未來能源之主流。
高溫型燃料電池中，最具代表性為熔融碳酸鹽燃料電池(MCFC)和固態氧化物燃料電池(SOFC)，其適合應用於區域分散型與集中型電廠。高溫型燃料電池所排出的廢(餘)熱可再度用於氣渦輪機、蒸汽渦輪機或其他熱驅動設備，進而組成燃料電池汽電共生系統。
因此，本文以SOFC和MCFC燃料電池做汽電共生系統之設計，計算其第一定律效率，且採用以二次元座標來表示系統元件的過程特性，其火用量與能量的變化量可看系統裝置的性能，可做為系統設計人員提升系統效率之依據，此外，也對第二定律效率做計算，以期進一步作為發展出高效率低污染最佳化燃料電池汽電共生系統之參考。

關鍵字

混元型汽電共生系統 ； [火用]效益

並列摘要

Global dependence on fossil fuel has produced increasingly alarming energy and pollution trends worldwide , The need to speed up development of new technologies to make renewable and clean energy feasible alternatives is apparent and urgent in every nation. Fuel cell , with high energy efficiency and clean emissions , represent a promising type of clean energy , Since the conversion of the fuel to energy takes place via an electrochemical process is clean , quite and highly efficient , more efficient than fuel burning . It is the future major reliabile energy technology .
High temperature fuel cell the typical products are Molten Carbonate Fuel Cell and Solid Oxide Fuel Cell. It is suitable for district distribution and concentration power plants. High temperature fuel cell exhaust the waste energy can be used to gas turbines, steam turbines and other thermal driver equipment then combines as a fuel cell cogeneration system.
This thesis concentrates on SOFC and MCFC cogeneration system as a major topic . It can analyze the fuel cell cogeneration system , and explain the performance of 1st and 2nd efficience law , and discuss exergy and energy diversity of devices by 2 dimensions coordinate system . Eventually , to develop an optimum design of high efficiency fuel cell cogeneration system.

並列關鍵字

Hybird cycle with cogeneration system ； Exergy

參考文獻

[4] Deng-Chern Sue，Chia-Chin Chuang(莊嘉琛)，"Engineering design and exergy analyses for combustion gas turbine based power generation system"，ENERGY 29，pp.1183-1205，2004。

[6] Florian Zink，Yixin Lu，Laura Schaefer，"A solid oxide fuel cell system for buildings"，Energy Conversion and Management 48，pp.809–818，2007。

[7] S.H. Chan，C.F. Low，O.L. Ding，"Energy and exergy analysis of simple solid oxide fuel cell power system"，Journal of Power Sources 103，pp.188-200，2002

[8] Nico Hotz，Stephan M. Senn，Dimos Poulikakos，"Exergy analysis of a solid oxide fuel cell micropowerplant"，Journal of Power Sources 158，pp.333–347，2006。

[9] F. Calise，A Palombo，L. Vanoli，"Design and partial load exergy analysis of hybrid SOFC–GT power plant"，Journal of Power Sources 158，pp.225–244，2006。