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    Experimental Study of Air-Water Interaction in Presence of Powdered Wax Inside Simulated Gas Distribution Channel of a Proton Exchange Membrane Fuel Cell

    Source: Journal of Fuel Cell Science and Technology:;2009:;volume( 006 ):;issue: 003::page 31011
    Author:
    Abhijit Mukherjee
    ,
    Anthony Bourassa
    DOI: 10.1115/1.3006352
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Low temperature fuel cells such as proton exchange membrane fuel cells are being currently developed to run cars and buses. Water management in these fuel cells is a key issue that needs to be adequately addressed for rapid development of the technology. The fuel cell reaction creates water that is typically carried away by the incoming air. However, at part load operations when the required air supply is lower, water droplets may fully block the air supply channels, leading to inefficient fuel cell operation. A solution to this problem is proposed taking a cue from tiny insects known as aphids that live inside plants. They excrete a watery substance called honeydew and get rid of this water using wax by encapsulating it into tiny droplets. In the present study, air-water interaction in a minichannel is studied in the presence of powdered wax. Air is forced into the channel inlet and water is pumped through a hole on the top wall of the channel. The movement of water inside the channel at different air velocities and water flow rates is recorded using a high-speed camera. Results indicate that the water droplets and slugs formed inside the channel are removed more rapidly in the presence of powdered wax. At the highest water flow rate and lowest air velocity used in this study the unwaxed channel gets completely flooded while the slugs of water continued to move forward in the waxed channel. Different two-phase flow regimes have been identified and plotted in both the waxed and unwaxed channels.
    keyword(s): Flow (Dynamics) , Channels (Hydraulic engineering) , Proton exchange membrane fuel cells , Water AND Slug ,
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      Experimental Study of Air-Water Interaction in Presence of Powdered Wax Inside Simulated Gas Distribution Channel of a Proton Exchange Membrane Fuel Cell

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    http://yetl.yabesh.ir/yetl1/handle/yetl/140839
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    contributor authorAbhijit Mukherjee
    contributor authorAnthony Bourassa
    date accessioned2017-05-09T00:33:24Z
    date available2017-05-09T00:33:24Z
    date copyrightAugust, 2009
    date issued2009
    identifier issn2381-6872
    identifier otherJFCSAU-28938#031011_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/140839
    description abstractLow temperature fuel cells such as proton exchange membrane fuel cells are being currently developed to run cars and buses. Water management in these fuel cells is a key issue that needs to be adequately addressed for rapid development of the technology. The fuel cell reaction creates water that is typically carried away by the incoming air. However, at part load operations when the required air supply is lower, water droplets may fully block the air supply channels, leading to inefficient fuel cell operation. A solution to this problem is proposed taking a cue from tiny insects known as aphids that live inside plants. They excrete a watery substance called honeydew and get rid of this water using wax by encapsulating it into tiny droplets. In the present study, air-water interaction in a minichannel is studied in the presence of powdered wax. Air is forced into the channel inlet and water is pumped through a hole on the top wall of the channel. The movement of water inside the channel at different air velocities and water flow rates is recorded using a high-speed camera. Results indicate that the water droplets and slugs formed inside the channel are removed more rapidly in the presence of powdered wax. At the highest water flow rate and lowest air velocity used in this study the unwaxed channel gets completely flooded while the slugs of water continued to move forward in the waxed channel. Different two-phase flow regimes have been identified and plotted in both the waxed and unwaxed channels.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleExperimental Study of Air-Water Interaction in Presence of Powdered Wax Inside Simulated Gas Distribution Channel of a Proton Exchange Membrane Fuel Cell
    typeJournal Paper
    journal volume6
    journal issue3
    journal titleJournal of Fuel Cell Science and Technology
    identifier doi10.1115/1.3006352
    journal fristpage31011
    identifier eissn2381-6910
    keywordsFlow (Dynamics)
    keywordsChannels (Hydraulic engineering)
    keywordsProton exchange membrane fuel cells
    keywordsWater AND Slug
    treeJournal of Fuel Cell Science and Technology:;2009:;volume( 006 ):;issue: 003
    contenttypeFulltext
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