Highly thermal integrated heat pipe-solid oxide fuel cell

被引：39

作者：

Zeng, Hongyu ^{[1
]}

Wang, Yuqing ^{[1
]}

Shi, Yixiang ^{[1
]}

Cai, Ningsheng ^{[1
]}

Yuan, Dazhong ^{[2
]}

机构：

[1] Tsinghua Univ, Dept Thermal Engn, Minist Educ, Key Lab Thermal Sci & Power Engn, Beijing 100084, Peoples R China

[2] Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China

来源：

APPLIED ENERGY | 2018年 / 216卷

基金：

中国国家自然科学基金;

关键词：

Heat pipe-solid oxide fuel cell; Heat functional layer; Temperature gradient; Fuel-rich flame; POWER-GENERATION; TEMPERATURE DISTRIBUTION; NUMERICAL-ANALYSIS; TUBULAR SOFC; DIRECT FLAME; START-UP; SYSTEMS; MANAGEMENT; EXCHANGER; OPERATION;

D O I：

10.1016/j.apenergy.2018.02.040

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Temperature gradient is a significant problem for the practical application of solid oxide fuel cells (SOFCs), which may lead to low power density and the degradation of SOFCs. In order to equalize the temperature distribution and improve the electrochemical performance, the concept of a heat pipe with liquid sodium metal is introduced into the design of SOFCs. A highly thermal integrated heat pipe-solid oxide fuel cell (HP-SOFC) was fabricated and investigated. The HP-SOFC consists of a heat functional layer, a current-collecting layer, an anode layer, an electrolyte layer, and a cathode layer. For an extreme flame operation, the temperature gradient along the axis of the tubular SOFC decreases from 31 to 13 K/cm due to the high heat-transfer rate of the heat functional layer. For a single fuel cell, the power output is significantly improved by 65%, increasing from 73 to 120 mW/cm(2) at 0.6 V with a methane-rich flame at an equivalence ratio of 1.7. In addition, prospects for other possible applications of the HP-SOFC are discussed.

引用

页码：613 / 619

页数：7

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