阳极压力降对质子交换膜燃料电池性能的影响
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摘要
为了研究阳极压力降对质子交换膜燃料电池性能的影响,提出了一个新的相对湿度-压力降(RHPD)模型。RHPD模型考虑了由阳极含水量变化引起的质子交换膜燃料电池阳极压力降变化的现象。将RHPD模型通过自定义函数导入Fluent中,完成燃料电池在不同工况下的仿真计算。对工作温度为60℃,阴极相对湿度为50%,阳极相对湿度分别为25%,50%,75%下的电池性能进行了测定。通过比较Fluent模型,RHPD模型和试验数据三者发现:相对湿度为25%,电流密度为445 mA/cm~2,RHPD模型和试验值数据间仅存在0.11%误差。
In order to study the effect of anode pressure drop on the performance of proton exchange membrane fuel cell(PEMFC), a new relative humidity & pressure drop(RHPD) model was proposed. This model took into account the pressure drop of PEMFC caused by the change of anodic water content. The RHPD model was imported into Fluent by user-defined function. The simulation was completed under different working conditions. The performance of the battery was measured when the operating temperature was 60 ℃, the cathode relative humidity was 50% and the anode relative humidity respectively was 25%, 50% and 75%. Compared with Fluent model, RHPD model and the experiment data, it is found that the relative humidity is 25% and the current density is 445 mA/cm~2. There are only 0.11% difference between RHPD model and experiment data.
In order to study the effect of anode pressure drop on the performance of proton exchange membrane fuel cell(PEMFC), a new relative humidity & pressure drop(RHPD) model was proposed. This model took into account the pressure drop of PEMFC caused by the change of anodic water content. The RHPD model was imported into Fluent by user-defined function. The simulation was completed under different working conditions. The performance of the battery was measured when the operating temperature was 60 ℃, the cathode relative humidity was 50% and the anode relative humidity respectively was 25%, 50% and 75%. Compared with Fluent model, RHPD model and the experiment data, it is found that the relative humidity is 25% and the current density is 445 mA/cm~2. There are only 0.11% difference between RHPD model and experiment data.
引文
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[9]STEINER N Y,CANDUSSO D,HISSEL D,et al.Model-based diagnosis for proton exchange membrane fuel cells[J].Mathematics and Computers in Simulation,2010,81(2SI):158-170.
[10]HEMEIDA A,SUMAIT F.Improving the Lockhart and Martinelli two-phrase flow correlation by SAS[J].Journal of King Saud University-Engineering Sciences,1988,14(2):423-435.
[11]GRIMM M,SEE E J,KANDLIKAR S G.Modeling gas flow in PEMFC channels:Part I-Flow pattern transitions and pressure drop in a simulated ex situ channel with uniform water injection through the GDL[J].International Journal of Hydrogen Energy,2012,37(17):12489-12503.
[12]ANDERSON R,EGGLETON E,ZHANG L.Development of twophase flow regime specific pressure drop models for proton exchange membrane fuel cells[J].International Journal of Hydrogen Energy,2015,40(2):1173-1185.
[13]JANSSEN G J M,OVERVELDE M L J.Water transport in the proton-exchange-membrane fuel cell:Measurements of the effective drag coefficient[J].J Power Sources,2001;101:117-125.
[14]BERNING T,KAER S K.Low stoichiometry operation of a protonexchange membrane fuel cell employing the interdigitated fuel cell:A modeling study[J].J Power Sources,2012,37(10):8477-8499.
[15]BERNING T.The dew point temperature as a criterion for optimizing operating conditions for proton exchange membrane fuel cells[J].Int Journal of Hydrogen Energy,2012,37(13):10265-10275.
[2]陈士忠,王艺澄,张旭阳,等.四流道蛇形结构质子交换膜燃料电池温度分布数值模拟[J].可再生能源,2016,34(6):921-925.
[3]高建华,刘永峰,裴普成,等.温度波动对质子交换膜燃料电池的影响[J].可再生能源,2017,35(8):1150-1155.
[4]PEI P,OUYANG M,FENG W,et al.Hydrogen pressure drop characteristics in a fuel cell stack[J].International Journal of Hydrogen Energy,2006,31(3):371-377.
[5]PEI P C,SONG M C,ZENG X,et al.Flooding prediction based on characteristics of hydrogen pressure drop in PEMFC[J].Journal of Agricultural Machinery,2014,45:341-346.
[6]WANG Y,BASU S,WANG C.Modeling two-phrase flow in PEMfuel cell channels[J].Journal of Power Sources,2008,179(2):603-617.
[7]ZHANG L,BI X T,WILKINSON D P,et al.Gas-liquid two-phrase flow behavior in minichannels bounded with a permeable wall[J].Chemical Engineering Science,2011,66(14SI):3377-3385.
[8]ITO K,ASHIKAGA K,MASUDA H,et al.Estimation of flooding in PEMFC gas diffusion layer by differential pressure measurement[J].Journal of Power Sources,2008,175(2):732-738.
[9]STEINER N Y,CANDUSSO D,HISSEL D,et al.Model-based diagnosis for proton exchange membrane fuel cells[J].Mathematics and Computers in Simulation,2010,81(2SI):158-170.
[10]HEMEIDA A,SUMAIT F.Improving the Lockhart and Martinelli two-phrase flow correlation by SAS[J].Journal of King Saud University-Engineering Sciences,1988,14(2):423-435.
[11]GRIMM M,SEE E J,KANDLIKAR S G.Modeling gas flow in PEMFC channels:Part I-Flow pattern transitions and pressure drop in a simulated ex situ channel with uniform water injection through the GDL[J].International Journal of Hydrogen Energy,2012,37(17):12489-12503.
[12]ANDERSON R,EGGLETON E,ZHANG L.Development of twophase flow regime specific pressure drop models for proton exchange membrane fuel cells[J].International Journal of Hydrogen Energy,2015,40(2):1173-1185.
[13]JANSSEN G J M,OVERVELDE M L J.Water transport in the proton-exchange-membrane fuel cell:Measurements of the effective drag coefficient[J].J Power Sources,2001;101:117-125.
[14]BERNING T,KAER S K.Low stoichiometry operation of a protonexchange membrane fuel cell employing the interdigitated fuel cell:A modeling study[J].J Power Sources,2012,37(10):8477-8499.
[15]BERNING T.The dew point temperature as a criterion for optimizing operating conditions for proton exchange membrane fuel cells[J].Int Journal of Hydrogen Energy,2012,37(13):10265-10275.