Index Catalog // ScholarsArchive@OSU

Energy Analysis of Novel Data Center Cooling Technology : Evaporative Cooling System Operation and Microchannel Heat Exchanger Manufacturing

Creator:: Lajevardi, Babak
Abstract:: Worldwide, many organizations are pursuing higher energy efficiency by reducing power consumption of their processes, systems, and supporting infrastructure. The rapid growth of the information technology (IT) industry and the miniaturization of semiconductors have resulted in substantial increases in energy consumption and power density of IT equipment, and, subsequently, heat...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________________________________ Karl R. Haapala Brian K. Paul Worldwide, many organizations are pursuing higher energy

Single- and multi-functional arrayed microchannel fluidic devices

Creator:: Fisher, Luke W.
Abstract:: Novel fluidic devices that utilize an array of microchannels to achieve their designed purpose are discussed. Examples of devices include: fuel reforming using Microreactors, chip cooling using microchannel heat sinks, and microchannel devices used for biological applications. The devices that have directly contributed to this research include: a microchannel water...
Resource Type:: Masters Thesis
Full Text:: ]: ! " = D 2 #$ ; 0.8 % " % 3 & = 'x # $ ; 80 % & % 562 where D, $, ), and !x

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 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:: have channel sizes of 0.450[mm] in height. 9 a b c d e Figure 1

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:: for material testing help. Thank you Drs. Joe McGuire, Kendra Sharp, and Karl “Rat” Schilke for your

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

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

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:: . Vincent Remcho, Dr. Chih- Hung Chang, Dr. Karl Haapala and Dr. Prasad Tadepalli for their valuable time

Development of self-registration features for the assembly of a microchannel hemodialyser

Creator:: Porter, Spencer D.
Abstract:: More than 1.2 million people worldwide require regular hemodialysis therapy to treat end stage renal failure. In the United States alone, there are 300,000 patients and the National Kidney Foundation predicts that this number will double in the next 10 years. Currently most dialysis patients receive treatment at a dialysis...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Spencer D. Porter

Design of a single lamina for a microchannel dialyzer with a focus on bubble removal

Creator:: Mohammadi, Mahshid
Abstract:: A microchannel-based hemodialyzer offers a novel approach to hemodialysis practice and holds many promises for improving dialysis treatment efficiency and quality of life for kidney patients. The hollow fiber hemodialyzer, a conventional dialysis device, has certain limitations including non-uniformity of the dialysate flow path which necessitates the use of a...
Resource Type:: Dissertation
Full Text:: Baltzer for their time and guidance. Thanks to Dr. James Liburdy, Dr. Joseph McGuire, and Dr. Karl “Rat

ScholarsArchive@OSU

Energy Analysis of Novel Data Center Cooling Technology : Evaporative Cooling System Operation and Microchannel Heat Exchanger Manufacturing

Single- and multi-functional arrayed microchannel fluidic devices

Laser keyhole welding for microlaminating a high-temperature microchannel array

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

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

Adhesive microlamination protocol for low-temperature microchannel arrays

Development of a radial microlamination architecture for cylindrical microchannel arrays

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

Development of self-registration features for the assembly of a microchannel hemodialyser

Design of a single lamina for a microchannel dialyzer with a focus on bubble removal

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