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  • A microchannel-based thermal management system for hydrogen storage adsorbent beds

    Creator:
    Steigleder, Leif J.
    Abstract:
    Hydrogen has been shown to be a promising replacement for fossil fuels for use in light duty vehicles because it is a clean, renewable and plentiful resource with a high gravimetric energy density. However, in order to obtain an acceptable volumetric energy density, densification of the hydrogen is required. Adsorptive...
    Resource Type:
    Masters Thesis
    Full Text:
    1. INTRODUCTION Fossil fuels provide the majority of today’s energy for the United States

  • 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:
    microchannel arrays for the bulk processing of mass and energy. Although MPT devices can be on the order of

  • Application of buckling behavior to evaluate and control shape variation in high-temperature microlamination

    Creator:
    Wattanutchariya, Wassanai
    Abstract:
    The miniaturization of energy, chemical and biological systems for distributed and portable applications, known as process intensification, is realized by the enhancement in heat and mass transfer performance within high surface-to-volume ratio microchannels. Fabrication of devices for process intensification is achieved in part by microlamination techniques. These techniques consist of...
    Resource Type:
    Dissertation
    Full Text:
    Wattanutchariya for the degree of Doctor of Philosophy in Industrial Engineering presented on April 29, 2002

  • 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:
    architectures for the fabrication of Micro Energy and Chemical Systems (MECS). MECS are microsystems with the

  • Characterization and Prediction of Reactive Forces for Compressed 3D Printed Hyperelastic Lattice Structures

    Creator:
    So, David M.
    Abstract:
    In order to generate practical ways to easily design functional flexible lattice structures, this research seeks to find a way to predict reactive forces of compressed hyperelastic cubic lattice structures. Using 3D printed test coupons, material data was collected for use in finite element analysis. Cubic lattice structures with varying...
    Resource Type:
    Honors College Thesis
    Full Text:
    of polymeric lattice structures for optimum energy absorption using Multi Jet Fusion technology

  • Characterization of a diffusion soldering process for micro-technology-based energy and chemical systems manufacturing

    Creator:
    Gabriel, Michael A.
    Abstract:
    Several 316 stainless steel meso-scopic devices were made using a diffusion soldering process. Tensile strength and pressure drop of the devices were measured and metallurgical examinations were made of the joints. Continuous bonds were observed in the sample cross-section specimens. Strengths of the diffusion soldered joints were up to 56%...
    Resource Type:
    Masters Thesis
    Full Text:
    : Characterization of a Diffusion Soldering Process for Micro-Technology-Based Energy and Chemical Systems

  • Comparison of two microvalve designs fabricated in mild steel using microprojection welding and capacitive dissociation

    Creator:
    Terhaar, Tyson J.
    Abstract:
    Since the dawn of the computer age, there has been a push to create miniature devices. These devices were initially integrated circuit (IC) devices to perform calculations for computers. As the technology progressed, the scope of the devices diverged to included microelectromechanical (MEMS) devices, meaning that the devices perform mechanical...
    Resource Type:
    Masters Thesis
    Full Text:
    . Terhaar for the degree of Master of Science in Industrial Engineering presented on September 11, 1998

  • 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:
    AutoCAD AN ABSTRACT OF THE THESIS OF Sairam V Pamulapati for the degree of Master of Science in

  • 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:
    embedded arrays of microchannels for processing high rates of fluid mass and thermal energy

  • Development of a passive micro-ball valve

    Creator:
    Wangwatcharakul, Worawut
    Abstract:
    A novel design, material, and fabrication method are presented to fabricate a passive micro-ball valve. Microvalves are critical components in microflow control devices used to control the fluid flows in microchannels. These microflow control devices can be integrated with microsensors to form micro analysis systems. Glass/silicon-based fabrication is complicated and...
    Resource Type:
    Masters Thesis
    Full Text:
    . "Microlamination for microtechnology-based energy, chemical, and biological systems. American Society of Mechanical