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学者姓名：郭航
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Abstract ：
一种增强阴极水反补阳极能力的被动式直接甲醇燃料电池属于质子交换膜燃料电池领域。结构包括甲醇溶液存储腔、穿孔板、蒸气腔、绝缘垫片、阳极集流板、复合膜电极、阴极集流板、阴极空气自呼吸腔，各部件之间利用孔通过绝缘螺栓和螺母进行连接和固定。该电池利用聚乙烯醇膜将阴极生成的水输回阳极，缓解阴极水淹的问题、缓解阳极甲醇穿透的问题、减缓阳极催化剂中毒的速度、保证质子交换膜的含水量；提升了燃料电池的输出功率、能量转化率和使用寿命。使得直接甲醇燃料电池能够使用较高浓度甲醇溶液或纯甲醇作为燃料正常工作，提升电池的总发电量。
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| GB/T 7714 | 叶芳 , 杨绍琛 , 郭航 et al. 一种增强阴极水反补阳极能力的被动式直接甲醇燃料电池 : CN202211406117.0[P]. | 2022-11-10 . |
| MLA | 叶芳 et al. "一种增强阴极水反补阳极能力的被动式直接甲醇燃料电池" : CN202211406117.0. | 2022-11-10 . |
| APA | 叶芳 , 杨绍琛 , 郭航 , 陈浩 . 一种增强阴极水反补阳极能力的被动式直接甲醇燃料电池 : CN202211406117.0. | 2022-11-10 . |
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Abstract ：
Proton exchange membrane fuel cells are widely utilized in the areas of aerospace, military and vehicles. Enhancing the reactant transportation and improving water, heat management can effectively increase the electrochemical reaction rate and power output. Orientated-type flow channels have been proved to be effective on improving mass transporting and enhancing performance. In this study, a flow field plate with transparent observation window, whose channel side wall is designed as transparent side-plates, is fabricated to achieve the side-view observation on liquid movement behaviors inside fuel cells. The visualization results of reactant gas and liquid water generation and flowing behaviors in channel regions are observed through the side direction for the first time. Experimental results infer that: orientated-type flow channels having baffles affect droplet generation, moving and shape in gas flow channels, and higher current densities result in more liquid water generation. The baffle downstream region having sudden expanded region slows down droplet moving, and baffle upstream sides accelerates droplet moving. Moreover, the generated heat of electrochemical reaction cannot satisfy maintaining a higher cell working temperature requirement, and an extra heating procedure is required.(c) 2022 Elsevier Ltd. All rights reserved.
Keyword ：
Side-view observation method Side-view observation method Two-phase flow Two-phase flow Orientated-type gas channel Orientated-type gas channel Mass transportation Mass transportation Proton exchange membrane fuel cell Proton exchange membrane fuel cell
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| GB/T 7714 | Guo, Hang , Zhao, Qiang , Ye, Fang . An experimental study on gas and liquid two-phase flow in orientated-type flow channels of proton exchange membrane fuel cells by using a side-view method [J]. | RENEWABLE ENERGY , 2022 , 188 : 603-618 . |
| MLA | Guo, Hang et al. "An experimental study on gas and liquid two-phase flow in orientated-type flow channels of proton exchange membrane fuel cells by using a side-view method" . | RENEWABLE ENERGY 188 (2022) : 603-618 . |
| APA | Guo, Hang , Zhao, Qiang , Ye, Fang . An experimental study on gas and liquid two-phase flow in orientated-type flow channels of proton exchange membrane fuel cells by using a side-view method . | RENEWABLE ENERGY , 2022 , 188 , 603-618 . |
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Abstract ：
Orientated-type flow channels of proton exchange membrane fuel cells having baffles increase the cell performance, however, the higher power loss accounted by baffles, is a non-ignorable disadvantage. Previous literature proves that the baffles in channels cause the increase in power losses, while how the baffles affect the power losses, including the frictional losses and local losses, are still not analyzed before. Therefore, in this paper, a two-dimensional model is developed to study the friction loss and local loss in the flow channels with baffles. The numerical model, which couples the non-Darcy flow effect, is validated by comparing with self-conducted experimental results. Experimental and simulation results reveal that: orientated-type flow channels facilitate enhance the power output, and with the enlargement of baffles, the performance is further enhanced. In addition, the frictional losses and local losses in the orientated-type flow channels are comparatively studied by a numerical approach for the first time. It is found that using the materials with low surface roughness can decrease the friction loss; and avoiding sudden expanded segments at leeward sides of baffles can reduce the local loss. The experimental results and simulation results can further help improve the flow channel design. (c) 2021 Elsevier Ltd. All rights reserved.
Keyword ：
Orientated-type flow channel Orientated-type flow channel Local loss Local loss Frictional loss Frictional loss Flow channel design Flow channel design Proton exchange membrane fuel cell Proton exchange membrane fuel cell
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| GB/T 7714 | Chen, Hao , Guo, Hang , Ye, Fang et al. Cell performance and flow losses of proton exchange membrane fuel cells with orientated-type flow channels [J]. | RENEWABLE ENERGY , 2022 , 181 : 1338-1352 . |
| MLA | Chen, Hao et al. "Cell performance and flow losses of proton exchange membrane fuel cells with orientated-type flow channels" . | RENEWABLE ENERGY 181 (2022) : 1338-1352 . |
| APA | Chen, Hao , Guo, Hang , Ye, Fang , Fang, Chong . Cell performance and flow losses of proton exchange membrane fuel cells with orientated-type flow channels . | RENEWABLE ENERGY , 2022 , 181 , 1338-1352 . |
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Abstract ：
Oxygen side flow channel structures have significant influence on the dynamic response of relevant parameters in operation mode switching procedures of a unitized regenerative fuel cell. In this paper, an unsteady, non-isothermal, two-phase, two-dimensional unitized regenerative fuel cell model is established to study the dynamic response of two-phase species concentration distributions, current density distributions etc. when the cell mode swiches from the fuel cell mode to the electrolyzer when using orientational flow channel at the oxygen side. The influence of eight oxygen-side channels on the mode switching process is compared. Results show that the required time for each parameter reaching the stable state in the fuel cell mode is longer than the dynamic response time after switching to electrolytic cell mode when using orientational flow channels. In addition, different flow channel structures at the oxygen-side affect the time requirement for stabilizing each parameter during mode switching, while they do not change the characteristics of the stable state mode.(c) 2022 Elsevier Ltd. All rights reserved.
Keyword ：
Mode switching Mode switching Orientational flow channel Orientational flow channel Dynamic response Dynamic response Mass transfer Mass transfer Unitized regenerative fuel cell Unitized regenerative fuel cell
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| GB/T 7714 | Guo, Hang , Song, Jia , Ye, Fang et al. Dynamic response during mode switching of unitized regenerative fuel cells with orientational flow channels [J]. | RENEWABLE ENERGY , 2022 , 188 : 698-710 . |
| MLA | Guo, Hang et al. "Dynamic response during mode switching of unitized regenerative fuel cells with orientational flow channels" . | RENEWABLE ENERGY 188 (2022) : 698-710 . |
| APA | Guo, Hang , Song, Jia , Ye, Fang , Fang, M. A. Chong . Dynamic response during mode switching of unitized regenerative fuel cells with orientational flow channels . | RENEWABLE ENERGY , 2022 , 188 , 698-710 . |
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Abstract ：
利用课题组自行配制的二元混合熔融盐(KNO_3-Ca(NO_3)_2)开展导热油与低熔点熔融盐的管内强制对流实验研究。通过实验得到导热油与低熔点熔融盐的总换热系数,并通过最小二乘法和Wilson分离法得到了管内低熔点熔融盐侧的对流换热系数及其准则关联式。与不同的经典传热关联式对比,最大偏差为+23%。考虑高温熔融盐的变物性特征,利用黏度项对Dittus-Boelter方程关联式进行修正。经过修正后的Dittus-Boelter方程与实验测试结果最大偏差为-15%,偏差值明显减小。过渡流实验数据和Hausen方程及Gnielinski方程的最大偏差均为10%,实验结果验证了传热关系式仍适用于高温...
Keyword ：
太阳能 太阳能 蓄热 蓄热 熔融盐 熔融盐 换热器 换热器 传热 传热 强迫对流 强迫对流
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| GB/T 7714 | 陈虎 , 吴玉庭 , 郭航 et al. 低熔点熔融盐管内强迫对流换热的实验研究 [J]. | 太阳能学报 , 2021 , 42 (02) : 25-30 . |
| MLA | 陈虎 et al. "低熔点熔融盐管内强迫对流换热的实验研究" . | 太阳能学报 42 . 02 (2021) : 25-30 . |
| APA | 陈虎 , 吴玉庭 , 郭航 , 陈夏 , 鹿院卫 , 马重芳 . 低熔点熔融盐管内强迫对流换热的实验研究 . | 太阳能学报 , 2021 , 42 (02) , 25-30 . |
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Abstract ：
低熔点熔融盐管内强迫对流换热的实验研究
Keyword ：
熔融盐 熔融盐 换热器 换热器 太阳能 太阳能 传热 传热 强迫对流 强迫对流 蓄热 蓄热
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| GB/T 7714 | 陈虎 , 吴玉庭 , 郭航 et al. 低熔点熔融盐管内强迫对流换热的实验研究 [J]. | 陈虎 , 2021 , 42 (2) : 25-30 . |
| MLA | 陈虎 et al. "低熔点熔融盐管内强迫对流换热的实验研究" . | 陈虎 42 . 2 (2021) : 25-30 . |
| APA | 陈虎 , 吴玉庭 , 郭航 , 陈夏 , 鹿院卫 , 马重芳 et al. 低熔点熔融盐管内强迫对流换热的实验研究 . | 陈虎 , 2021 , 42 (2) , 25-30 . |
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Abstract ：
本发明公开了一种平行流场与蛇形流场自动切换的燃料电池自适应流场板，流场板的结构包括：反应物进口和出口，进口总管和出口总管，流场板上设有若干条脊、流道和四周的流场板壁，总管两侧壁面上的凹槽以及布置的自适应结构。当总管中有积存的液态水时，流场中的自适应结构吸水膨胀，总管局部横截面积逐渐变小，甚至堵住总管，使流场板局部或全部从平行状流场变为蛇形流场；当总管中不再有积存的液态水时，在电池运行温度下受到气流吹扫，内部水分蒸发，自适应结构脱水收缩，变为平行流场。本发明能够根据总管中液态水含量发生自适应变化，适应不同的工况，加快液态水的移出，避免水淹现象，并减小泵功消耗，提升电池净功率的效果。
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| GB/T 7714 | 郭航 , 牟禹辉 , 叶芳 . 平行流场与蛇形流场自动切换的燃料电池液态水自适应流场板 : CN202111178528.4[P]. | 2021-10-10 . |
| MLA | 郭航 et al. "平行流场与蛇形流场自动切换的燃料电池液态水自适应流场板" : CN202111178528.4. | 2021-10-10 . |
| APA | 郭航 , 牟禹辉 , 叶芳 . 平行流场与蛇形流场自动切换的燃料电池液态水自适应流场板 : CN202111178528.4. | 2021-10-10 . |
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Abstract ：
本发明公开了一种具有液态水自适应导流结构的深度渐浅流场板，流场板的结构包括：反应物进口和出口，流场板上分布的若干条脊和流道，在渐浅流道凹槽上布置自适应结构。当流道内有积存的液态水时，自适应结构能够吸水膨胀，各相邻自适应结构之间的距离缩短，甚至会贴合到一起，流道横截面积变小；当流道内不再有积存的液态水时，自适应结构能够在电池运行温度及反应物吹扫的条件下，内部液态水蒸发，使其脱水收缩，流道横截面积变大。本发明所添加的自适应结构能够根据流道内液态水含量变化发生而自适应改变，当液态水含量较多时，反应物流速加快，能够加快液态水排出；当液态水含量较少时，两相流动阻力低，能够减少泵功消耗。
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| GB/T 7714 | 郭航 , 毕康璐 , 牟禹辉 et al. 具有液态水自适应导流结构的深度渐浅流场板 : CN202111178538.8[P]. | 2021-10-10 . |
| MLA | 郭航 et al. "具有液态水自适应导流结构的深度渐浅流场板" : CN202111178538.8. | 2021-10-10 . |
| APA | 郭航 , 毕康璐 , 牟禹辉 , 叶芳 , 陈浩 . 具有液态水自适应导流结构的深度渐浅流场板 : CN202111178538.8. | 2021-10-10 . |
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Abstract ：
本发明公开了一种流道对液态水自适应渐变的燃料电池流场板，流场板的结构包括：反应物的进口和出口，流场板上分布着若干条脊和流道，流场板凹槽内的自适应结构。当流道内有积存的液态水时，自适应结构吸水膨胀，体积变大，使得流道截面积减小，流道变得渐浅或渐窄。当流道内不再有积存的液态水时，自适应结构在电池自身运行温度及反应气体气流吹扫的情况下，内部水分蒸发，脱水收缩，流道截面积变大并恢复常态。本发明通过添加自适应结构使流道对液态水含量变化具有一定自适应能力，既能加快液态水的排出，加快电化学反应速率，又能减小泵功消耗，提升电池净功率。
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| GB/T 7714 | 郭航 , 牟禹辉 , 毕康璐 et al. 流道对液态水自适应渐变的燃料电池流场板 : CN202111178540.5[P]. | 2021-10-10 . |
| MLA | 郭航 et al. "流道对液态水自适应渐变的燃料电池流场板" : CN202111178540.5. | 2021-10-10 . |
| APA | 郭航 , 牟禹辉 , 毕康璐 , 叶芳 . 流道对液态水自适应渐变的燃料电池流场板 : CN202111178540.5. | 2021-10-10 . |
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Abstract ：
本发明公开了一种点状流场与平行流场自动切换的燃料电池自适应流场板，流场板的结构包括：反应物进口和出口，流场板上设有若干脊和流道，脊侧的凹槽以及布置的自适应结构。当流道中有积存的液态水时，相邻的两个自适应结构吸水膨胀，流道截面逐渐变小，甚至使局部或全部流道闭合，使流场板从点状流场变为平行流场；当流道中不再有积存的液态水时，在电池运行温度和气流吹扫的条件下，自适应结构会脱水收缩，重新形成通道，平行流场变为点状流场。本发明能够对流道中的液态水含量发生自适应变化，在液态水含量较大时，加快液态水的移出，避免局部水淹；在流道中液态水含量较小时，减少两相流动阻力，减小泵功消耗，提升电池净功率。
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| GB/T 7714 | 郭航 , 牟禹辉 , 叶芳 . 点状流场与平行流场自动切换的燃料电池自适应流场板 : CN202111178530.1[P]. | 2021-10-10 . |
| MLA | 郭航 et al. "点状流场与平行流场自动切换的燃料电池自适应流场板" : CN202111178530.1. | 2021-10-10 . |
| APA | 郭航 , 牟禹辉 , 叶芳 . 点状流场与平行流场自动切换的燃料电池自适应流场板 : CN202111178530.1. | 2021-10-10 . |
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