Index Catalog // ScholarsArchive@OSU

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

Mechanical characterization and modeling of solder joints for the secondary side reflow of large IC packages

Creator:: Yutzie, James D.
Abstract:: As the drive continues to reduce the size of Printed Wiring Assemblies (PWAs), improve performance of electronic assemblies, and reduce costs of these products, reliable secondary (bottom) side reflow operations must be developed. Attaching Surface Mount Technology (SMT) components to the secondary side of a Printed Circuit Board (PCB) is...
Resource Type:: Masters Thesis
Full Text:: Packages. Abstract approved: Dr. Brian K. Paul As the drive continues to reduce the size of Printed

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:: approved: ____________________________________________________________________ Brian K. Paul

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:: . Abstract approved: Brian K. Paul Microchannel arrays are being developed across a wide

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:: : ____________________________________________________________________ Brian K. Paul To improve the performance of solid oxide fuel cells, a secondary power

A Manufacturing Process Design for Producing a Membrane-based Energy Recovery Ventilator with High Aspect Ratio Support Ribs

Creator:: Kawula, Steven P.
Abstract:: Heating, ventilation, and air conditioning systems represent nearly half of building energy usage in the United States. Recent building regulations requiring increased air turnover within buildings will result in even greater air conditioning usage. To alleviate these concerns, membrane-based heat-and-moisture exchangers known as energy recovery ventilators have been developed to...
Resource Type:: Masters Thesis
Full Text:: Brian K. Paul Heating, ventilation, and air conditioning systems represent nearly half of

Determining the dimensional requirements of a reliable compression sealing method for use in microchannel hemodialysers

Creator:: Ward, Dustin K.
Abstract:: Almost 600,000 people in the United States were treated for End Stage Renal Disease in 2010. A majority of those people received hemodialysis from central medical facilities. It has been reported a better treatment option for these patients would be realized if the patients had more frequent hemodialysis treatments. A...
Resource Type:: Masters Thesis
Full Text:: : _____________________________________________ Brian K. Paul Almost 600,000 people in the United States were treated for End Stage Renal

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:: :185-93. [7] Paul BK, Kwon P, Subramanian R. Understanding Limits on Fin Aspect Ratios in

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

Force Prediction in the Compression Sealing of an Ultra-thin Elastoviscoplastic Membrane

Creator:: McNeff, Patrick Scot
Abstract:: The objective of this paper is to demonstrate a method for mechanically characterizing a 25 μm thick elastoviscoplastic hemodialysis membrane and for quantifying the force required to use that membrane in compression sealing. First, methods are developed for mechanically characterizing the thin elastoviscoplastic membrane. Then, a finite element model is...
Resource Type:: Masters Thesis
Full Text:: Brian K. Paul The objective of this paper is to demonstrate a method for mechanically

ScholarsArchive@OSU

Cooling rate limitations in the diffusion bonding of large microchannel arrays

Mechanical characterization and modeling of solder joints for the secondary side reflow of large IC packages

Laser keyhole welding for microlaminating a high-temperature microchannel array

Development of a radial microlamination architecture for cylindrical microchannel arrays

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

A Manufacturing Process Design for Producing a Membrane-based Energy Recovery Ventilator with High Aspect Ratio Support Ribs

Determining the dimensional requirements of a reliable compression sealing method for use in microchannel hemodialysers

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

Half Array Architecture for Advancing Microchannel Heat Recuperation to Market

Force Prediction in the Compression Sealing of an Ultra-thin Elastoviscoplastic Membrane

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