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Filtering by: Creator Sikkel, Paul C. Remove constraint Creator: Sikkel, Paul C. Advisor Paul, Brian K. Remove constraint Advisor: Paul, Brian K.

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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:
    : _____________________________________________________________________ Brian K. Paul A significant barrier to the diffusion bonding of large (i.e. 600 mm

  • Application of controlled thermal expansion in diffusion bonding for the high-volume microlamination of MECS devices

    Creator:
    Pluess, Christoph
    Abstract:
    Diffusion bonding has been widely used within microlamination architectures for the fabrication of Micro Energy and Chemical Systems (MECS). MECS are microsystems with the ability to process bulk amounts of fluid within highly-parallel microchannel arrays capable of accelerated heat and mass transfer. Thus far, diffusion bonding of the microchannel arrays...
    Resource Type:
    Masters Thesis
    Full Text:
    Abstract approved: Brian K. Paul Diffusion bonding has been widely used within microlamination

  • Nickel nanoparticles-assisted diffusion brazing of stainless steel 316 for microfluidic applications

    Creator:
    Tiwari, Santosh K.
    Abstract:
    Transient liquid-phase diffusion brazing is used in precision, hermetic joining applications as a replacement for diffusion bonding to reduce cycle times, reduce bonding pressure and improve yields. Studies showed that the interlayer used in diffusion brazing can be detrimental due to the use of melting point depressants (MPDs). The goal...
    Resource Type:
    Dissertation
    Full Text:
    : ___________________________________________________________________ Brian K. Paul Transient liquid-phase diffusion brazing is used in precision, hermetic

  • Development of nickel aluminide (NiAl) microchannel array devices for high-temperature applications

    Creator:
    Kanlayasiri, Kannachai
    Abstract:
    The miniaturization of Microtechnology-based Energy, Chemical and Biological Systems (MECS) is made possible by the use of high aspect ratio microchannel arrays to increase the surface-area-to-volume ratio of the flow conduits within the devices, resulting in an improvement in the heat and mass transfer performance of the devices. However, advantages...
    Resource Type:
    Dissertation
    Full Text:
    than 650 °C such as in the previously mentioned applications (Paul et al., 2002), a new material

  • Manufacturing Process Design for a Stamped Microchannel High-Temperature Recuperator

    Creator:
    Song, Chuankai
    Abstract:
    Microchannel high temperature recuperators have the advantage of higher heat transfer coefficients and lower size and weight than traditional high temperature recuperators. However, the industrial application of microchannel recuperators are restricted by the high cost of photochemical machining and diffusion bonding. The objective of this paper is to introduce a...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: ______________________________________________________ Brian K. Paul Microchannel

  • Microlamination based on surface mount technology for the economical production of microchannel arrays

    Creator:
    Sharma, Nitin
    Abstract:
    Micro Energy and Chemical Systems (MIECS) are multi-scale microsystems, which rely on embedded nano and micro-scale features to process bulk amounts of fluid in applications ranging from man-portable heat pumps, distributed fuel reforming and insitu waste remediation. Microlamination is a well-known process architecture for fabricating the highly parallel, high aspect...
    Resource Type:
    Masters Thesis

  • Half Array Architecture for Advancing Microchannel Heat Recuperation to Market

    Creator:
    Brannon, Samuel T.
    Abstract:
    High temperature microchannel heat recuperators (HTμRs) offer an efficient means of improving reactor process thermal efficiency by offering smaller form factors due to increased heat transfer surface area density and volumetric heat transfer rate over traditional heat exchanger designs. To date, HTμRs face cost and reliability challenges. In this work,...
    Resource Type:
    Dissertation
    Full Text:
    approved: Brian K. Paul High temperature microchannel heat recuperators (HTµRs) offer an efficient means

  • Computer aided tolerance analysis and process selection for AutoCAD

    Creator:
    Pamulapati, Sairam V.
    Abstract:
    The fundamental objective of a design engineer in performing tolerance technology is to transform functional requirements into tolerances on individual parts based on existing data and algorithms for design tolerance analysis and synthesis. The transformation of functional requirements into tolerances must also consider the existing process capabilities and manufacturing costs...
    Resource Type:
    Masters Thesis
    Full Text:
    Selection for AutoCAD. act approved: Brian K. Paul The fundamental objective of a design engineer in

  • The use of electrochemical micromachining for making a microfloat valve

    Creator:
    Park, Sang-Bin
    Abstract:
    Micromanufacturing consists of processes for producing structures, devices or systems with feature sizes measured in micrometers. Micromanufacturing began in the mid-1960's with microelectronics fabrication technology. In the 1980's, Micro-Electro-Mechanical Systems (MEMS) began to be developed, in which electrical and mechanical subsystems were integrated at small scales. More recently, Microtechnology-based Energy...
    Resource Type:
    Masters Thesis
    Full Text:
    for Making a Microfloat Valve. Abstract approved: Brian K. Paul Micromanufacturing consists of

  • Nanoparticle-assisted diffusion brazing of metal microchannel arrays : nanoparticle synthesis, deposition, and characterization

    Creator:
    Eluri, Ravindranadh T.
    Abstract:
    Microchannel process technology (MPT) offers several advantages to the field of nanomanufacturing: 1) improved process control over very short time intervals owing to shorter diffusional distances; and 2) reduced reactor size due to high surface area to volume ratios and enhanced heat and mass transfer. The objective of this thesis...
    Resource Type:
    Dissertation
    Full Text:
    : _____________________________________________________________________ Brian K. Paul Microchannel process technology (MPT) offers several advantages to the field