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Comparison of Analytical and Experimental Effectiveness of Four-Row Plate-Fin-Tube Heat Exchangers with Water, R-22, and R-410A

Description: The analytical solutions of heat exchanger effectiveness for four-row crcmilow, cross-countertlow and cross-paralleltlow have been derived in the recent study. The main objective of this study is to investigate the etlkct of heat exchawger tlow conllguration on thermal performance with refrigerant mixtures. Difference of heat exchanger effectiveness for all flow arrangements relative to an analytical many-row solution has been analyzed. A comparison of four-row cross cou~ltet-ilow heat exchange… more
Date: November 15, 1998
Creator: Baxter, V. D.; Chen, T. D. & Conklin, J. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

2-D electric fields and drifts near the magnetic separatrix in divertor tokamaks

Description: A 2-D calculation is presented for the transport of plasma in the edge region of a divertor tokamak solving continuity, momentum, and energy balance fluid equations. The model uses anomalous radial diffusion, including perpendicular ion momentum, and classical cross-field drifts transport. Parallel and perpendicular currents yield a self-consistent electrostatic potential on both sides of the magnetic separatrix. Outside the separatrix, the simulation extends to material divertor plates where t… more
Date: November 15, 1998
Creator: Mattor, N.; Porter, G. D.; Rognlien, T. D. & Ryutov, D. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Continuous, Rapid Production of Uniform Microparticles by Electrodispersion

Description: Ultrafine particles constitute the key building blocks for diverse advanced structural and functional materials, such as high-performance ceramics and alloys. These advanced materials have tremendous impact in many areas, including catalysis, separations, electronics, energy production processes, and environmental applications. Of particular importance, nanophase ceramic or metallic materials that contain nanosized (<100 nm) particles/grains show dramatically improved performance (mechanical… more
Date: November 15, 1998
Creator: DePaoli, D.W. & Hu, M.Z.-C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Riverton Dome Gas Exploration and Stimulation Technology Demonstration, Wind River Basin, Wyoming

Description: This project will provide a full demonstration of an entirely new package of exploration technologies that will result in the discovery and development of significant new gas reserves now trapped in unconventional low-permeability reservoirs. This demonstration includes the field application of these technologies, prospect definition and well siting, and a test of this new strategy through wildcat drilling. In addition this project includes a demonstration of a new stimulation technology that w… more
Date: November 15, 1998
Creator: Surdam, Ronald C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Measured Delayed Neutron Spectra from the Fission of U-235 and Np-237

Description: Texas A&M University, in collaboration with Oak Ridge National Laboratory / the Japan Atomic Energy Research Institute, have been actively studying the delayed neutron emission characteristics of the higher actinide isotopes for several years. 1-3 Recently, a proton recoil detector system was designed, built, and characterized for use in measuring delayed neutron energy spectra following neutron induced fission. The system has been used to measure aggregate delayed neutron energy spectra from n… more
Date: November 15, 1998
Creator: Charlton, W. S.; Comfort, C.; Parish, T. A. & Raman, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Naturally fractured tight gas reservoir detection optimization

Description: The three tasks were completed during this reporting period. During this quarter, work focused on a local structural analysis of the Table Rock field, greater Green River basin (GGRB) in southwestern Wyoming. The ultimate objective of the local analysis is to apply the techniques developed and demonstrated during earlier phases of the project in the Rulison Field area of the Piceance basin for sweet-spot delineation. The primary goal of this work is to focus in on the Table Rock field area in t… more
Date: November 15, 1998
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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