首页> 外文会议>International conference on fuel cell science, engineering and technology >ANALYSIS OF THE CO-GENERATION POTENTIAL OF A 5 KW PEMFC FROM EXPERIMENTALLY DETERMINED PERFORMANCE DATA
【24h】

ANALYSIS OF THE CO-GENERATION POTENTIAL OF A 5 KW PEMFC FROM EXPERIMENTALLY DETERMINED PERFORMANCE DATA

机译:从实验确定的性能数据分析5 kW PEMFC的同幂电位

获取原文

摘要

A 5 kW proton exchange membrane fuel cell (PEMFC) with a reformer has been installed and tested at the Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Brazil, aiming the experimental determination of its performance and co-generation potential to increase the fuel chemical energy usage. The unit uses a fuel processor to convert energy from natural gas into hydrogen rich reformate. The fuel cell is totally instrumented, supplying data for calculating the overall system efficiency (total efficiency), reformer efficiency, stack efficiency, conversion efficiency (DC/AC), and co-generation potential, at previously set up output powers of 2,5 kW and 4 kW. The paper details the equations required for calculating the parameters, both theoretically, from thermodynamics and electrochemics points of view, and experimentally, from mass and energy balances, comparing the results. Steady state data were taken at 13 different days, resulting in reformer, stack, conversion and total average efficiencies, together with the calculated standard deviation. It was also found that the energy loss in the reformer and in the stack are approximately the same. The co-generation potential was estimated by calculating the heat rejected by the stack and the heat rejected in the reformer, giving a value of 67,5% and 68.9%. respectively for 2,5 kW and 4 kW. Therefore, co-generation can substantially reduce the fuel cell energy cost, and thus increasing the feasibility of its use.
机译:在巴西里约热内卢(Puc-Rio)的庞大的天主教大学(Puc-Rio),巴西的5 kW质子交换膜燃料电池(PEMFC)已经安装和测试,旨在实验其性能和增长潜力的实验燃料化学能源使用。该装置使用燃料处理器将能量从天然气转换为富含氢的重整。燃料电池完全仪表,供应用于计算整体系统效率(总效率),重整器效率,堆叠效率,转换效率(DC / AC)和同幂电位的数据,以前设置了2,5的输出功率kw和4 kW。本文详细说明了从理论上计算参数所需的方程,从实际上,从质量和能量余额到实验,从质量和能量余额进行比较。稳态数据在13日拍摄,导致改革者,堆叠,转换和总平均效率,以及计算的标准偏差。还发现重整器和堆叠中的能量损失大致相同。通过计算堆叠被抑制的热量和重整器中被拒绝的热量来估计生成电位,其值为67.5%和68.9%。分别为2,5 kW和4 kW。因此,共同可以大大降低燃料电池能量成本,从而提高其使用的可行性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号