Index Catalog // ScholarsArchive@OSU

Use of the exergy concept for design improvement of heat exchangers and heat exchanger networks

Creator:: Ranasinghe, Jatila
Abstract:: The second law of thermodynamics, through the exergy concept, allows us to quantify and rationally cost the consumption of exergy (irreversibility) used to drive the heat exchange process and the effluent losses of exergy in a heat exchanger For systems with a network of heat exchangers, the exergy concept recognizes...
Resource Type:: Dissertation
Full Text:: Abstract approved: Prof. Gordon M. Reistad The second law of thermodynamics, through the exergy concept

Understanding Designer Mental Models to Support Computer Directed Analogical Design

Creator:: Arlitt, Ryan M.
Abstract:: Analysis of alternative concepts has a significant impact on design project outcomes, and yet many design teams fail to consider a significantly broad range of conceptual solutions. Within the realm of conceptual design exists a technique called design by analogy (DBA) -- the practice of reapplying old solutions to new...
Resource Type:: Dissertation
Full Text:: Directed Analogical Design AN ABSTRACT OF THE DISSERTATION OF Ryan M. Arlitt for the degree of

Optimization of staged rankine energy conversion cycles for high efficiency

Creator:: Simmons, Larry Dean
Abstract:: Because of the fuel crisis and problems associated with thermal pollution there is new impetus and urgency for developing more efficient energy conversion systems for power generation. A preliminary analysis was undertaken to determine the potential of staged Rankine cycle systems for substantially higher efficiency. It was necessary to optimize...
Resource Type:: Dissertation
Full Text:: . M. S. Inoue, willingly provided advice and discussed ideas throughout the research and writing

Experimental investigation of natural convection from an array of uniformly heated horizontal cylinders to mercury

Creator:: Wang, Deing
Abstract:: An experimental investigation was conducted to better understand the heat transfer process with natural convection from an array of uniformly heated horizontal cylinders to mercury. Five assembly geometries were studied, these being the single horizontal cylinder, two cylinders with spacing ratios S/D = 2,3 and 4, (S represents the center-to-center...
Resource Type:: Dissertation
Full Text:: 14 13 12 11 Zw 01 -,in M m 9Z liti a .. 7in M Z 6 tat 1 S- 4 3 2 0 1 0.0E+00 2.0E+00 4.0E+00

Transient nonlinear deformations of viscoelastic membranes

Creator:: Jenkins, Christopher H. M.
Resource Type:: Dissertation
Full Text:: second Piola-Kirchoff stress tensor S, measured per unit area of undeformed midsurface, by s = (I3)2 s

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:: horizontal tube at mass fluxes ranging from 100 kg m−2 s−1 to 500 kg m−2 s−1 at three different saturation

Tentative equilibrium diagram for the nickel-rich end of the nickel-zirconium system

Creator:: Armstrong, Asa William
Resource Type:: Dissertation
Full Text:: : -.. ". \ .. ,' , . M ' \ . . - .- . -: . - ÇNç \ " . :- ' . '. ' . , '4 1' 5Çb. 1\ j -S' £ - S ; \, , - » - Sfr

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 ≤ q′′ ≤ 50 W cm-2), mass flux (315 ≤ G ≤ 2000 kg m-2 s-1), and reduced pressure (1.03 ≤ PR ≤ 1.1

Evaporator analysis for application to water-source and ice-maker heat pumps

Creator:: Aceves, Salvador M.
Abstract:: Water-source and ice-maker heat pumps share many characteristics. However, each presents different technical difficulties that have prevented them from being used more widely. In a water-source heat pump a very important consideration is to reduce water consumption, while in an ice-maker heat pump a major concern is to reduce the...
Resource Type:: Dissertation
Full Text:: =0.01 m, N=8 and V=4.2x10-4 m3/s. 116 5.2 Water temperature, refrigerant temperature and refrigerant

Ductile facture of metals under high triaxial stress states

Creator:: Tolle, Michael C.
Resource Type:: Dissertation
Full Text:: . [87]). 1-27. The influence of the T/S ratio (where T = 62 = a3 and S = al) on the 44 6m /6y ratio

ScholarsArchive@OSU

Use of the exergy concept for design improvement of heat exchangers and heat exchanger networks

Understanding Designer Mental Models to Support Computer Directed Analogical Design

Optimization of staged rankine energy conversion cycles for high efficiency

Experimental investigation of natural convection from an array of uniformly heated horizontal cylinders to mercury

Transient nonlinear deformations of viscoelastic membranes

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

Tentative equilibrium diagram for the nickel-rich end of the nickel-zirconium system

Turbulent Heat Transfer of Supercritical Carbon Dioxide in the Proximity of the Pseudo-Critical Point with Non-Uniform Heat Flux Boundary Conditions

Evaporator analysis for application to water-source and ice-maker heat pumps

Ductile facture of metals under high triaxial stress states

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