Index Catalog // ScholarsArchive@OSU

Part-Load Optimization of an Organic Rankine Cycle

Creator:: Ramsey, Owen
Abstract:: Waste-heat-recovery Organic Rankine Cycle (ORC) systems use excess heat from industrial processes to produce electrical power. In many cases, the temperatures and mass flow rates of these excess-heat streams vary significantly over time, causing the ORC to often operate far from its design point. In this study, a control strategy...
Resource Type:: Honors College Thesis
Full Text:: strategy is investigated for an ORC using refrigerant R1233zd(E), with the objective of maximizing net

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:: e Effective H Hot side i Species “i” in Inlet INT Intercooler j Species “j” m Mixture out

Evaluation of system-level performance of closed thermochemical energy storage systems for space heating

Creator:: Rivera, Kate E.
Abstract:: This study evaluates the system efficiency and energy-offsetting capabilities of a closed-cycle thermochemical energy storage (TCES) system. Current TCES research primarily focuses on material selection and reactor design but overlooks the practical limitations faced on a system level. Thus, this study investigates various TCES integration methods for providing building space...
Resource Type:: Masters Thesis
Full Text:: Kate E. Rivera for the degree of Master of Science in Mechanical Engineering presented on November 29

Ductile facture of metals under high triaxial stress states

Creator:: Tolle, Michael C.
Resource Type:: Dissertation
Full Text:: hydrostatic stress, showing the effect of the strain hardening exponentc, with ay/E = 0.003 (from Huang et al

Microstructural banding in thermally and mechanically processed titanium 6242

Creator:: Kansal, Utkarsh
Abstract:: Ti-6Al-2Sn-4Zr-2Mo-0.1Si specimens were shaped by repeated cycles of heating (to 954 °C) and hammer or press forging followed by a solution anneal that varied from 968 to 998 °C. The coupons were originally extracted from billets forged below the beta trans us ( 1009 °C) and slow cooled to ambient...
Resource Type:: Masters Thesis
Full Text:: Size Final Size Anneal Temp Passes Bands Strain e c Set 1 0.0635 m x 0.041275 m x 968 °C 3 1.5 5.0

The effects of thermal processing on the mechanical properties of AA2024, 2014 and 2618 aluminum alloys

Creator:: Li, Xiao, 1963-
Abstract:: This study determined the independent effects of various homogenization cycles and precipitation treatments on the elevated temperature workability and the final ambient temperature mechanical properties of AA2024 aluminum alloy and on the T3 tensile properties of 2014 aluminum alloy as well as T6 tensile properties of 2618 and 2618 (Curich)...
Resource Type:: Masters Thesis
Full Text:: difficult to detect without transmission election microscipy because the 80 rn -- 60 20 0 40 2 E o Eo

Development and validation of acoustic measurement techniques for void fraction in concentric annular geometries

Creator:: Tost, Brian C.
Abstract:: This work investigates the acoustic velocity of gas-liquid mixtures in vertical, co-current flow in a concentric annulus. Acoustic velocity shows promise as a detection parameter for the presence and amount of gas in a liquid flow because of its high sensitivity to gas void fraction in a gas-liquid mixture. However,...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ Brian M. Fronk ______________________________________________________ Paulo Waltrich

Electric Actuation of the Main Flight Valves of a Small Bi-Propellant Liquid Engine

Creator:: Edgerton, Jacob M.
Abstract:: The High Altitude Liquid Engine (HALE) team is developing of a 2000 lbf thrust liquid propellant engine for a flight vehicle capable of breaching the Karman Line (100 km in altitude). As part the development of this flight vehicle, this research focuses on the design and characterization of a novel...
Resource Type:: Honors College Thesis

Predicting Properties of Bio-jet Fuels using Machine Learning and ATR-FTIR Spectroscopy

Creator:: Mayer, Morgan A.
Abstract:: High-potential molecules derived from biomass sources may suitably replace or supplement traditional nonrenewable hydrocarbon fuels to reduce pollution and fuel processing costs. Due to expensive and time-consuming property testing, models that predict key properties from optical data would initially vet potential additives before investment and bench-scale testing. Attenuated Total Reflection...
Resource Type:: Masters Thesis
Full Text:: : Kyle E. Niemeyer High-potential molecules derived from biomass sources may suitably replace or supple

Analysis of energy conversion systems, including material and global warming aspects

Creator:: Zhang, Mingyuan
Abstract:: With the rapid increase of the world energy demand and consumption, the method and techniques to analyze, improve and optimize energy conversion systems have to deal not only with direct fuel exergy (energy) consumption, but also with other resources, which have associated exergy consumptions, and with environmental impacts, such as...
Resource Type:: Dissertation
Full Text:: Material and Global Warming Aspects. Abstract approved: Gordon M. Reistad With the rapid

ScholarsArchive@OSU

Part-Load Optimization of an Organic Rankine Cycle

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

Evaluation of system-level performance of closed thermochemical energy storage systems for space heating

Ductile facture of metals under high triaxial stress states

Microstructural banding in thermally and mechanically processed titanium 6242

The effects of thermal processing on the mechanical properties of AA2024, 2014 and 2618 aluminum alloys

Development and validation of acoustic measurement techniques for void fraction in concentric annular geometries

Electric Actuation of the Main Flight Valves of a Small Bi-Propellant Liquid Engine

Predicting Properties of Bio-jet Fuels using Machine Learning and ATR-FTIR Spectroscopy

Analysis of energy conversion systems, including material and global warming aspects

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