Index Catalog // ScholarsArchive@OSU

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:: AN ABSTRACT OF THE DISSERTATION OF Tabeel A. Jacob for

Student Club Analysis: The Effects of Organizational Structuring on Competition Performance

Creator:: Chandler, Jacob J.
Abstract:: This thesis aims to explore the effects of organizational and management principles within the context of a student club – an international Formula Student team. Research on the effects of organizational structuring on student club performance tends to be qualitative in nature. While considering the inherent complexity of the human...
Resource Type:: Masters Thesis
Full Text:: Performance by Jacob J. Chandler A THESIS submitted to Oregon State

In-Tube condensation of zeotropic refrigerant R454C from superheated vapor to subcooled liquid

Creator:: Jacob, Tabeel A. and Fronk, Brian M.
Abstract:: This article investigates the in-tube, superheated, saturated, and subcooled condensation of zeotropic refrigerant mixture R454C. R454C is proposed to replace R404A for commercial refrigeration applications. Quasi-local heat transfer coefficients were measured in a 4.7 mm horizontal tube at mass fluxes ranging from 100 to 500 kg m−2 s−1 at three different saturation...
Resource Type:: Article
Full Text:: Corvallis, OR 97331, USA, * Corresponding Author: Email: Brian.Fronk@oregonstate.edu Tabeel A. Jacob

Experimental Investigation of In-Tube Condensation of Low GWP Refrigerant R450A using a Fiber Optic Distributed Temperature Sensor

Creator:: Jacob, Tabeel A., Matty, Ethan P., and Fronk, Brian M.
Abstract:: Heat transfer coeﬃcients and frictional pressure drop values are experimentally measured during condensation of R134a and its proposed low global warming potential (GWP) replacement, R450A. R450A is a non-ﬂammable zeotropic mixture of R134a and R1234ze (42/58% by mass). Experiments were conducted in a horizontal tube (ID = 4.7 mm) for...
Resource Type:: Article
Full Text:: Refrigerant R450A using a Fiber Optic Distributed Temperature Sensor Tabeel A. Jacob, Ethan P Matty, Brian M

Comparison of R404A condensation heat transfer and pressure drop with low global warming potential replacement candidates R448A and R452A

Creator:: Jacob, Tabeel A., Matty, Ethan P., and Fronk, Brian M.
Abstract:: The objective of this paper was to measure and compare the heat transfer coefficient and pressure drop of R404A and two potential replacement candidate refrigerants with a lower global warming potential, R448A and R452A. Experiments were conducted inside a 4.7 mm horizontal tube at mass fluxes ranging from 100 to...
Resource Type:: Article
Full Text:: Drop with Low Global Warming Potential Replacement Candidates R448A and R452A Tabeel A. Jacob, Ethan

Two-phase flow regimes of condensing R-134a at low mass flux in rectangular microchannels

Creator:: Vanderputten, Michael A., Jacob, Tabeel A., Sattar, Maria, Ali, Nouman, and Fronk, Brian M.
Abstract:: Qualitative two-phase flow regime data are obtained from high-speed visualization of condensing flows of R-134a at mass fluxes from 75 to 150 kg m−2 s−1 and quality from 0.1 to 0.8 in square microchannels (DH = 0.84 mm) cooled from a single side. Superheated R-134a is distributed into multiple parallel microchannels and then partially condensed, using...
Resource Type:: Article
Full Text:: Microchannels Michael A. VANDERPUTTEN(a) , Tabeel A. JACOB(a), Maria SATTAR(b), Nouman ALI(b), and Brian M

Journal of Open Source Software (JOSS) : design and first-year review

Creator:: Valls Guimera, Roman, Madan, Christopher R., Ram, Karthik, Barba, Lorena A., Prins, Pjotr, Vanderplas, Jacob T., Mayes, Abigail Cabunoc, Githinji, George, Teal, Tracy K., Rokem, Ariel, Huff, Kathryn D., Niemeyer, Kyle E., Smith, Arfon M., Katz, Daniel S., Moerman, Kevin M., and Gymrek, Melissa
Abstract:: This article describes the motivation, design, and progress of the Journal of Open Source Software (JOSS). JOSS is a free and open-access journal that publishes articles describing research software. It has the dual goals of improving the quality of the software submitted and providing a mechanism for research software developers...
Resource Type:: Article
Full Text:: review Arfon M. Smith1, Kyle E. Niemeyer2, Daniel S. Katz3, Lorena A. Barba4, George Githinji5, Melissa

Effect of Active Trailing Edge Motion Upon Airfoil Energy Harvester

Creator:: Strahl, Jordan D.
Abstract:: The application of a flapping foil with prescribed trailing edge motion to energy harvesting in a low reduced frequency (k = fc/U∞) regime was experimentally studied. The effects of the phase and amplitude of the applied trailing edge motion upon time-variant power extraction capability have been measured and are interpreted....
Resource Type:: Masters Thesis
Full Text:: like to thank my brother, Jacob Strahl, for being a welcome distraction to preserve my sanity and for

Modeling, control, and estimation of flexible, aerodynamic structures

Creator:: Ray, Cody W.
Abstract:: Engineers have long been inspired by nature's flyers. Such animals navigate complex environments gracefully and efficiently by using a variety of evolutionary adaptations for high-performance flight. Biologists have discovered a variety of sensory adaptations that provide flow state feedback and allow flying animals to feel their way through flight. A...
Resource Type:: Dissertation
Full Text:: . Just under a century after the Wright brothers, Munday and Jacob [60] demon- strated separation could

Modeling in-situ vapor extraction during flow boiling in microscale channel

Creator:: Salakij, Saran
Abstract:: In-situ vapor extraction is performed by applying a pressure differential across a hydrophobic porous membrane that forms a wall of the channel as a means of reducing the local quality of flow boiling within the channel. As the local quality is reduced, the heat transfer capability can be improve while...
Resource Type:: Dissertation
Full Text:: : _______________________________________________________ James A. Liburdy In-situ vapor extraction is performed by applying a pressure differential

ScholarsArchive@OSU

Investigation of In-tube Non-equilibrium Condensation of Low Global Warming Potential Refrigerants

Student Club Analysis: The Effects of Organizational Structuring on Competition Performance

In-Tube condensation of zeotropic refrigerant R454C from superheated vapor to subcooled liquid

Experimental Investigation of In-Tube Condensation of Low GWP Refrigerant R450A using a Fiber Optic Distributed Temperature Sensor

Comparison of R404A condensation heat transfer and pressure drop with low global warming potential replacement candidates R448A and R452A

Two-phase flow regimes of condensing R-134a at low mass flux in rectangular microchannels

Journal of Open Source Software (JOSS) : design and first-year review

Effect of Active Trailing Edge Motion Upon Airfoil Energy Harvester

Modeling, control, and estimation of flexible, aerodynamic structures

Modeling in-situ vapor extraction during flow boiling in microscale channel

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