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Filtering by: Creator Deinzer, Max L. Remove constraint Creator: Deinzer, Max L. Academic Affiliation Mechanical, Industrial, and Manufacturing Engineering Remove constraint Academic Affiliation: Mechanical, Industrial, and Manufacturing Engineering Advisor Fronk, Brian M. Remove constraint Advisor: Fronk, Brian M.

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The Feasibility of Process Intensification of the Water-Gas Shift Reaction using Differential Temperature Microreactors

Creator:

Tolley, Thomas E.

Abstract:

Hydrogen is an increasingly attractive low-carbon energy carrier for a variety of stationary and mobile applications. Currently, the vast majority of hydrogen in the United States is produced via the energy intensive steam reforming of natural gas. The cost and carbon emissions associated with hydrogen production can be reduced by...

Resource Type:

Masters Thesis

Full Text:

[mol/kg-s] L Length [m] M Molar mass [kg/mol] N Number of channels n Number of time periods O
Numerical and Experimental Evaluation of Membrane Based Energy Recovery Ventilator Performance with an Internal Support Structure

Creator:

Armatis, Paul D.

Abstract:

Large amounts of energy are wasted when conditioned air in buildings is exhausted to meet ventilation requirements. There are several technologies to recover some of this energy, including the recent development of membrane based energy recovery ventilators (ERVs). ERVs exchange sensible heat and moisture between incoming fresh and outgoing exhaust...

Resource Type:

Masters Thesis

Full Text:

K m s-1 combined mass transfer coefficient l m segment length Lp m pin length m kg mass MW
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:

Modulus E Hydraulic h Acceleration from Gravity g Liquid l Mass Flux G Maximum max Heat Transfer
Numbering-up of parallel microchannel arrays to megawatt scale supercritical CO₂ solar thermal receivers

Creator:

Hyder, Matthew B.

Abstract:

Concentrated solar power (CSP) plants have the potential to reduce the reliance on nonrenewable energies such as coal and natural gas and provide 24 hour, renewable electricity. A CSP system consists of a large field of heliostats that concentrate the sunlight on a centralized receiver, in this receiver a working...

Resource Type:

Masters Thesis

Full Text:

transverse flow area based on segments conv Convection ext External F Forced L Characteristic length
An investigation of the feasibility of a process-intensified differential temperature water-gas shift reactor with integrated Pt/Al2O3 catalyst

Creator:

Hu, Kathy Q.

Abstract:

There has been serious interest in hydrogen as a source of energy in the United States due to its capability of delivering a sustainable, carbon-free energy future. Currently, most hydrogen in the United States is produced via the steam methane reforming of natural gas, which converts methane to hydrogen through...

Resource Type:

Masters Thesis

Full Text:

L stainless steel with different channel shapes: (a) circular (diameter = 8 mm), (b) square (width
Investigation of In-tube Non-equilibrium Condensation of Low Global Warming Potential Refrigerants

Creator:

Jacob, Tabeel A.

Abstract:

This work investigates the in-tube condensation of low global warming potential (GWP) zeotropic refrigerant mixtures R448A, R450A, R452A, R454B and R454C. These refrigerants have been proposed for a wide range of commercial heating, ventilation, air-conditioning applications, but their heat and momentum transport phenomenon were not well understood. Thus, in this...

Resource Type:

Dissertation

Full Text:

We 0.035 TP (2.3) C1 = (1− x)2 + x2 ( ρlfvo ρvflo ) C2 = x 0.78(1− x)0.224 ( ρl ρv )0.91( µv µl
Potential of Genetic Algorithms for Design of Liquid Cooled Heat Sinks Fabricated Using Additive Manufacturing

Creator:

Dokken, Connor B.

Abstract:

The advancement of new manufacturing techniques such as additive manufacturing enable significantly greater freedom of design compared to conventional techniques. Of significant interest is what improvements could be made in the design of cold plates and heat sinks for electronics cooling. Greater design freedom could potentially enable new designs that...

Resource Type:

Masters Thesis
Investigation of Seasonal Performance of a Membrane Heat Pump System in Different Climate Regions

Creator:

Bukshaisha, Ahmad A.

Abstract:

Membrane based heat pumps systems have attracted the attention of many research groups as a potentially more environmentally friendly alternative to vapor compression systems that are being used for space cooling in 90\% of the buildings in the United States. Several prototypes systems have been developed, with reported claims of...

Resource Type:

Masters Thesis
Experimental investigation of supercritical heat transfer of carbon dioxide in parallel square microchannels with a single-wall constant heat flux boundary condition

Creator:

Zada, Kyle R.

Abstract:

In the vicinity of the pseudocritical point, supercritical carbon dioxide (sCO₂) undergoes a steep change in properties from “liquid-like” to “gas-like” as it is heated at a constant pressure. At the same time, there is a large spike in specific heat which can yield high heat transfer coefficients and heat...

Resource Type:

Masters Thesis

Full Text:

Inlet Jack (Jackson & Hall 1979a) Nusselt number L Laminar m Mean max Maximum MC
Turbulent Heat Transfer of Supercritical Carbon Dioxide in the Proximity of the Pseudo-Critical Point with Non-Uniform Heat Flux Boundary Conditions

Creator:

Jajja, Saad A.

Abstract:

Seven decades of supercritical heat transfer research have not seen an attempt to characterize turbulent thermal transport in internal flows subject to asymmetric heating. Existing heat transfer models therefore do not account for phenomena that dictates thermal transport, in the proximity of the pseudo-critical point, for non-uniform heating. Additionally, past...

Resource Type:

Dissertation

Full Text:

5.12 L+ values for the top heated configuration of the microchannel test section with a channel aspect

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Academic Affiliation

Mechanical, Industrial, and Manufacturing Engineering[remove]11

Advisor

Fronk, Brian M.[remove]11

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 2017 to 2023

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Committee Member

Gess, Joshua5
Hagen, Chris3
Blunck, David2
Jovanovic, Goran2
Mason, Ben2
more Committee Members »

Creator

Armatis, Paul D.1
Bukshaisha, Ahmad A.1
Chamorro, Davis S.1
Dokken, Connor B.1
Hu, Kathy Q.1
more Creators »

Contributor

Fronk, Brian M.1
Song, Chuankai1

Date

Date range begin – Date range end

Current results range from 2017 to 2023

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Decade

2020-20295
2010-20196

Degree Field

Mechanical Engineering11

Degree Level

Master's9
Doctoral2

Degree Name

Master of Science (M.S.)9
Doctor of Philosophy (Ph.D.)2

Language

English [eng]11

License

All rights reserved11

Non-Academic Affiliation

Oregon State University. Graduate School3

Peer Reviewed

No11

Resource Type

Masters Thesis9
Dissertation2

Rights Statement

In Copyright11

Subject

Carbon dioxide1
Genetic algorithms1
Heat -- Transmission1
Heat sinks (Electronics)1
Microreactors1
more Subjects »

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