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Filtering by: Committee Member Haapala, Karl R. Remove constraint Committee Member: Haapala, Karl R. Peer Reviewed No Remove constraint Peer Reviewed: No Subject Microlamination Remove constraint Subject: Microlamination

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  • Cooling rate limitations in the diffusion bonding of large microchannel arrays

    Creator:
    Lingam, Gopi K.
    Abstract:
    A significant barrier to the diffusion bonding of large (i.e. 600 mm) microchannel devices is the large capital investment required to setup production. This large capital investment extends from long heating and cooling cycles leading to poor production capacities. Empirical studies in industry have shown that cooling rate is limited...
    Resource Type:
    Masters Thesis
    Full Text:
    Engineering and Dr. Karl Haapala for being on committee. I would like to extend my appreciation to Dr

  • Development of an economical high temperature microchannel recuperator for solid oxide fuel cells

    Creator:
    Brannon, Samuel T.
    Abstract:
    To improve the performance of solid oxide fuel cells, a secondary power cycle can be driven by the recuperation of exhaust gas heat. Microchannel recuperators are attractive for waste heat recuperation due to compact form factors which also minimize the mass of the expensive superalloys required. This paper introduces a...
    Resource Type:
    Masters Thesis
    Full Text:
    Rmin is the minimum bend radius[mm] t is the material thickness[mm], and r is the tensile percent

  • Laser keyhole welding for microlaminating a high-temperature microchannel array

    Creator:
    Lajevardi, Babak
    Abstract:
    Microchannel process technology (MPT) components are chemical unit operations which exploit highly-parallel arrays of microchannels to process large fluid volumes for portable and distributed applications. Microchannel heat exchangers (MCHXs) have demonstrated 3 to 5 times higher heat fluxes when compared to conventional heat exchangers resulting in proportionate reductions in size...
    Resource Type:
    Masters Thesis
    Full Text:
    for the advice and support given by my graduate advisory committee Dr. Karl Haapala, Dr. David Kim

  • Development of a radial microlamination architecture for cylindrical microchannel arrays

    Creator:
    Vlieg, James H.
    Abstract:
    Microchannel arrays are being developed across a wide spectrum of microfluidic applications including blood processing, fuel cells and thermal management among many others. Typical arrays are based on a flat laminated architecture produced in a vacuum hot press (VHP) through solid-state diffusion bonding. Due to the cylindrical nature of certain...
    Resource Type:
    Masters Thesis
    Full Text:
    , Dr. Karl Haapala and Dr. Goran Jovanovic, for continued guidance and encouragement. And special

  • Adhesive microlamination protocol for low-temperature microchannel arrays

    Creator:
    Paulraj, Prawin
    Abstract:
    A new adhesive bonding method is introduced for microlamination architectures, for producing low-temperature microchannel arrays in a wide variety of metals. Sheet metal embossing and chemical etching processes have been used to produce sealing bosses and flow features, resulting in approximately 50% fewer laminae over traditional methods. These lamina designs...
    Resource Type:
    Dissertation
    Full Text:
    . Karl Haapala, Dr. Richard Peterson, Dr. Logen Logendran and Dr. Mark Daeschel for their valuable time