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外增湿
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  external humidification
     Moreover, the PEMFC can still be operated steady in counter flow at 80 ℃ without external humidification when its active area is extended to 140 cm 2 fabricated with Nafion 112 membrane.
     将PEMFC的活性面积放大到 14 0cm2 ,电池仍可以在气体逆流、80℃和无外增湿条件下稳定工作。
短句来源
     Proton exchange membrane fuel cell(PEMFC) with the active area of 5 cm 2 was fabricated by adopting Nafion 112 membrane. The performances of the PEMFC were evaluated without external humidification for the reactant gases when the hydrogen and the oxygen were in co flow or in counter flow.
     采用Nafion112膜组装 5cm2 活性面积质子交换膜燃料电池 (PEMFC) ,在无外增湿反应气体条件下试验了氢气和氧气并流和逆流时电池的工作性能。
短句来源
     Operating proton-exchange membrane fuel cells without external humidification
     无外增湿操作质子交换膜燃料电池
短句来源
     The humidifying method was classified into three categories: external humidification ,internal humidifi cation and self-humidificaton. The removal method was classified into static wa ter removal and dynamic water removal.
     介绍了增湿方法包括外增湿法、内增湿法和自增湿法,排水方法包括静态排水法和动态排水法;
短句来源
     External humidification was used and recirculating cooling water was used to remove the heat from reaction.
     H2、空气反应气均采用外增湿,使用循环冷却水排出电堆产生的热量。
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  “外增湿”译为未确定词的双语例句
     And humidity of the stack was managed by humidifying from both interior and exterior.
     采用内、外增湿相结合的方案来实现电池堆内部的湿度管理;
短句来源
     In this process, slurry system and atomizer were cancelled and particulate sorbent was humidified and activated outside the scrubbing column, which resolved the frequently occurring problems of wall-wetting and agglomeration in existing semidry processes and greatly simplified the process.
     该工艺取消了制(喷)浆系统,采用塔外增湿的活化方式,从而既消除了一般半干法反应塔内的湿壁、粘结问题,又大大简化了流程设备;
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  相似匹配句对
     6.106..
     10-’
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     Dinner Out
     在晚餐
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     Operating proton-exchange membrane fuel cells without external humidification
     无增湿操作质子交换膜燃料电池
短句来源
     The Technology of Humidification of PEMFC
     PEMFC的增湿技术
短句来源
     And humidity of the stack was managed by humidifying from both interior and exterior.
     采用内、增湿相结合的方案来实现电池堆内部的湿度管理;
短句来源
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  external humidification
According to the results, the optimum operating temperature for the studied cell is around 60 8C without external humidification.
      
Because of this, we examined the possibility of operating a fuel cell with free convection at the cathode side and without external humidification.
      
External humidification is however cumbersome and excessive vapor generation causes many problems to the FC and the electronics in the proximity.
      
External humidification of the reactants is not possible for reasons of system complexity.
      
Figure 1 shows an external humidification system for both anode and cathode gases.
      
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Proton exchange membrane fuel cell(PEMFC) with the active area of 5 cm 2 was fabricated by adopting Nafion 112 membrane. The performances of the PEMFC were evaluated without external humidification for the reactant gases when the hydrogen and the oxygen were in co flow or in counter flow. The results show that the PEMFC demonstrates the best performance at 60 ℃ when the hydrogen and the oxygen are in co flow, while it can be operated steady at 80 ℃ when the gases are in counter flow. The performance of...

Proton exchange membrane fuel cell(PEMFC) with the active area of 5 cm 2 was fabricated by adopting Nafion 112 membrane. The performances of the PEMFC were evaluated without external humidification for the reactant gases when the hydrogen and the oxygen were in co flow or in counter flow. The results show that the PEMFC demonstrates the best performance at 60 ℃ when the hydrogen and the oxygen are in co flow, while it can be operated steady at 80 ℃ when the gases are in counter flow. The performance of the PEMFC without external humidification has a little difference from that of the PEMFC with external humidification. Moreover, the PEMFC can still be operated steady in counter flow at 80 ℃ without external humidification when its active area is extended to 140 cm 2 fabricated with Nafion 112 membrane.

采用Nafion112膜组装 5cm2 活性面积质子交换膜燃料电池 (PEMFC) ,在无外增湿反应气体条件下试验了氢气和氧气并流和逆流时电池的工作性能。实验结果发现 :气体并流时 ,电池的最佳工作温度是 6 0℃ ;气体逆流时 ,电池可以在 80℃稳定工作 ,且性能与外增湿条件下的电池性能相比无明显下降。将PEMFC的活性面积放大到 14 0cm2 ,电池仍可以在气体逆流、80℃和无外增湿条件下稳定工作。

The kilowatt class proton-exchange membrane fuel cell (PEMFC) stack that consisted of 30 cells had been successfully fabricated. Aluminum plates via surface modification were used as bipolar plates. External humidification was used and recirculating cooling water was used to remove the heat from reaction. Nafion 115 membrane and Johnson-Matthy Platinum on carbon with Pt loading of 0.4 mg/cm2 were adopted as electrolyte and catalyst respectively. The working temperature of the stack ranged from 25 ℃ to 100 ℃....

The kilowatt class proton-exchange membrane fuel cell (PEMFC) stack that consisted of 30 cells had been successfully fabricated. Aluminum plates via surface modification were used as bipolar plates. External humidification was used and recirculating cooling water was used to remove the heat from reaction. Nafion 115 membrane and Johnson-Matthy Platinum on carbon with Pt loading of 0.4 mg/cm2 were adopted as electrolyte and catalyst respectively. The working temperature of the stack ranged from 25 ℃ to 100 ℃. The stack usually worked well when the ratio of H2/air was 0.2 MPa/0.22 MPa .Its output power , output current and output voltage was 1~1.3 kW, 40~80 A, 26~20 V respectively. The normal current density of the electrode was 200 ~375 mA/cm2. The energy efficiency of the stack was 51%.

使用表面改性的金属铝板做双极板,成功组装了含30个质子交换膜燃料电池(PEMFC)单电池的电堆。H2、空气反应气均采用外增湿,使用循环冷却水排出电堆产生的热量。分别使用Nafion115膜和John-MatthyPt/C作为电解质和催化剂,其中Pt载量为0.4mg/cm2。电堆工作温度为室温至100℃,H2与空气工作压力比为0.20MPa/0.22MPa,电堆输出功率为1~1.3kW,输出电流为40~80A,输出电压为26~20V,电极工作电流密度为200~375mA/cm2,电堆能量转化效率为51%。

Through analyzing the key influencing factors of working performance of the low-power PEMFC generating system,and according to the demand of application and miniaturization,a sort of control method for the system operating was discussed from the point of view of simplification and easiness. The temperature of the system was maintained by designing the structure of heat exchanging in the system and adjusting rotate speed of DC fans. And humidity of the stack was managed by humidifying from both interior and exterior....

Through analyzing the key influencing factors of working performance of the low-power PEMFC generating system,and according to the demand of application and miniaturization,a sort of control method for the system operating was discussed from the point of view of simplification and easiness. The temperature of the system was maintained by designing the structure of heat exchanging in the system and adjusting rotate speed of DC fans. And humidity of the stack was managed by humidifying from both interior and exterior. The measures of two-grades decompressing the pressure of reacting gases and restricting the flow velocity were made. And exhaust was let intermittently. Then the control circuit with single chip microcomputer as heart and its software were designed. In the end experiments were made to test the effect of this control method, and the result was satisfying.

通过分析影响小型PEMFC发电系统运行特性的各个关键因素,结合小型化、实用化的要求,探讨了一种简便、易于操作的控制方法。利用系统内部各热源的热交换结构设计、控制散热风扇转速来进行温度的调节;采用内、外增湿相结合的方案来实现电池堆内部的湿度管理;采用了两级减压、限流的操作压力与流速控制方案,以及定时排放的尾气控制方案。设计了以单片机为核心的控制电路及其软件,经测试收到了较为满意的控制效果。

 
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