Numerical investigations on the performance of a hydrogen-fueled micro planar combustor with tube outlet for thermophotovoltaic applications
Numerical investigations on the performance of a hydrogen-fueled micro planar combustor with tube outlet for thermophotovoltaic applications
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DOI：
10.1016/j.energy.2022.125957
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发表时间：
2022-11
期刊：
影响因子：
9
通讯作者：
W. Zuo;Zijie Wang;J. E.;Qingqing Li;Qianju Cheng;Yinkun Wu;Kun Zhou
中科院分区：
文献类型：
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作者：
W. Zuo;Zijie Wang;J. E.;Qingqing Li;Qianju Cheng;Yinkun Wu;Kun Zhou
由于微型热光伏发电系统输出功率和能量转换效率低，限制了其实际应用，优化微型燃烧室结构是提高微型燃烧室热性能的有效方法。在这项工作中，管出口被提出来加强已燃气和燃烧室壁之间的传热。建立了一个包含流动、传热和燃烧的三维模型，研究了管长、管径和壁面材料对带管出口的氢燃料微型平面燃烧室性能的影响。研究结果表明，管出口能有效提高微平面燃烧室的平均外壁温度和外壁温度均匀性，提高MTPV系统的能量输出和能量转换效率，但压力损失较大。MTPV系统的能量输出和能量转换效率随着管长的减小和管径的增大而增大，而压力损失则缓慢减小。当以镍为固体壁材时，MTPV系统的能量输出和能量转换效率分别可达6.14W和3.54%。
As the practical application of the micro thermophotovoltaic system is limited by its low output power and energy conversion efficiency, optimizing the structure of micro combustor to enhance the thermal performance of micro combustors is an effective method. In this work, the tube outlet is proposed to enhance the heat transfer between the burned gas and combustor wall. A three-dimensional model including fluid flow, heat transfer and combustion is constructed to investigate effects of tube length, tube diameter and solid wall materials on the performance of a hydrogen-fueled micro planar combustor with tube outlet. The findings show that the tube outlet can effectively improve mean outer wall temperature and outer wall temperature uniformity of micro planar combustor, and the energy output and energy conversion efficiency of MTPV system, but the pressure loss is higher. The energy output and energy conversion efficiency of MTPV system is increased with the reduction of tube length and the increment of tube diameter, while the pressure loss is slowly decreased. Moreover, when nickel is used as the solid wall material, the energy output and energy conversion efficiency of MTPV system can reaches to 6.14 W and 3.54%, respectively.