Index Catalog // ScholarsArchive@OSU

Condensation of a zeotropic mixture, R-454C, and its individual components, R-1234yf and R-32, in microfin tubes

Creator:: Matty, Ethan P.
Abstract:: This work compares the condensation heat transfer and pressure drop for zeotropic refrigerant R-454C and its individual components, R-32 and R-1234yf, in horizontal microfin tubes. One microfin tube has a 4 mm outer diameter, 0.18 mm wall thickness, and a surface area ratio of 1.56. The second tube has a...
Resource Type:: Masters Thesis
Full Text:: a Zeotropic Mixture, R-454C, and its Individual Components, R-1234yf and R-32, in Microfin Tubes

A design framework for identifying automation opportunities

Creator:: Nagel, Robert Lewis, 1982-
Abstract:: Since the Industrial Revolution, automated systems have increasingly become a part of everyday life. Automated systems range in scale and scope from simple assists to complete robotic replacements. Inexpensive integrated circuits, sensors and microprocessors have allowed automated systems to become smaller, cheaper and more prevalent. Identifying appropriate opportunities for automation,...
Resource Type:: Dissertation
Full Text:: Opportunities AN ABSTRACT OF THE DISSERTATION OF Robert Lewis Nagel for the degree of Doctor of Philosophy

Phase Separation in Microscale Convective Boiling

Creator:: Lewis, Kevin Terrence
Abstract:: It is hypothesized that extracting the vapor from two-phase flow in a microchannel will result in a lowered pressure drop required to drive the flow. The goal of this thesis is to construct an experimental device that will test this hypothesis by comparing a number of phase separating test conditions...
Resource Type:: Honors College Thesis
Full Text:: ABSTRACT OF THE THESIS OF Kevin Terrence Lewis for the degree of Honors Baccalaureate of Science in

Combustion mechanisms in wood fired boilers

Creator:: Tuttle, Kenneth Lewis
Abstract:: A program of research has been established at Oregon State University to study wood residue combustion using an experimental spreader-stoker combustor. This research was conducted to increase the understanding of combustion occurring in wood fired boilers. Using Douglas Fir screened to 3/8-3/4 inches, two 4x4 factorial experiments were conducted varying...
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE THESIS OF KENNETH LEWIS TUTTLE for the degree of DOCTOR OF PHILOSOPHY in MECHANICAL

Investigations into the effects of a vibrating meniscus on the characteristics of drop formation

Creator:: Lewis, Kevin T.
Abstract:: As drop-on-demand (DOD) applications continue to gain ground in desktop inkjet-printing, 3D printing, fluid mixing, and other areas the demand for higher frequency operations are beginning to push against the current physical boundaries in DOD technology. The current research is exploring the possibility of controlling drop volume and velocity at...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Kevin T. Lewis for

Analysis and design of a small gas sampling pump

Creator:: Tuttle, Kenneth Lewis
Abstract:: In an attempt to satisfy an existing need for a small gas sample pump, a proposed design was analyzed and determined to be feasible and a design for a prototype model was produced. The design is of a chemically inert, leak-proof, unlubricated, sliding-vane- type pump. It is designed to pump...
Resource Type:: Masters Thesis
Full Text:: ABSTRACT OF THE THESIS OF KENNETH LEWIS TUTTLE for the MASTER OF SCIENCE (Name) (Degree) in MECHANICAL

The adhesion of bituminous materials to mineral aggregate

Creator:: Melson, Lewis Byron
Resource Type:: Masters Thesis
Full Text:: always be stripped if water is allowed to penetrate the film. Mr. R. J. Shaw of the Arizona State

An experimental investigation of the thermomechanics of pipe flow of magnetic fluids in response to heating and applied magnetic fields

Creator:: Hamedani, Hooshyar M.
Abstract:: An experimental investigation was carried out to determine the thermodynamics and fluid mechanics of the pipe flow of magnetic fluids. A water-based magnetic fluid was synthesized in the laboratory and its relative viscosity and magnetic properties were determined as a function of temperature. A "thermomagnetic pump" was built and tested...
Resource Type:: Dissertation
Full Text:: , respectively, Dr. James R. Welty and Dr. Gordon M. Reistad, for financial support during the course of my

Evaluation of the predictive capability of two-phase flow maps for microchannel condensation of R-134a at low mass flux conditions

Creator:: VanderPutten, Michael A.
Abstract:: Predicting condensation flow regimes and the associated heat transfer and pressure drop in microchannels is critical for designing terrestrial and space systems for heating, cooling, power generation, and advanced manufacturing. It is well established that in flows approaching the microscale (Dh < 1 mm) gravity-dominated flow regimes become less relevant,...
Resource Type:: Masters Thesis
Full Text:: R-410A) in a 8.0 mm diameter tube (85 < G < 902 kg m-2 s-1-, 0.01 < x < 0.78). The

Evaluation of Materials for Use in Open-Cycle Magnetohydrodynamic Power Generation

Creator:: Bowen, Michael S.
Abstract:: Recent interest in oxy-fuel combustion for carbon capture, as well as advancements in technologies such as magnetics, materials, and computational modeling has sparked renewed interest in magnetohydrodynamic (MHD) power generation. The increased temperatures of oxy-fuel combustion versus air-fuel combustion poses a challenge in the selection of materials for plasma exposed...
Resource Type:: Masters Thesis
Full Text:: exceeding 100 S/m at 1300˚C while magnesia exhibits electrical conductivities well below 1 S/m for

ScholarsArchive@OSU

Condensation of a zeotropic mixture, R-454C, and its individual components, R-1234yf and R-32, in microfin tubes

A design framework for identifying automation opportunities

Phase Separation in Microscale Convective Boiling

Combustion mechanisms in wood fired boilers

Investigations into the effects of a vibrating meniscus on the characteristics of drop formation

Analysis and design of a small gas sampling pump

The adhesion of bituminous materials to mineral aggregate

An experimental investigation of the thermomechanics of pipe flow of magnetic fluids in response to heating and applied magnetic fields

Evaluation of the predictive capability of two-phase flow maps for microchannel condensation of R-134a at low mass flux conditions

Evaluation of Materials for Use in Open-Cycle Magnetohydrodynamic Power Generation

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Conference Name

Creator

Contributor

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Location

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search