Quantifying Silica Reactivity in Subsurface Environments: An Integrated Experimental Study of Quartz and Amorphous Silica to Establish a Baseline for Glass Durability (open access)

Quantifying Silica Reactivity in Subsurface Environments: An Integrated Experimental Study of Quartz and Amorphous Silica to Establish a Baseline for Glass Durability

An immediate EM science need is a reliable kinetic model that predicts long-term waste glass performance. A framework for which the kinetics of mineral-solution reactions can be used to interpret complex silicate glass properties is required to accurately describe the current and future behavior of glasses as synthetic monoliths or natural analogs. Reaction rates and mechanisms are essential elements in deciphering mineral/material reactivity trends within a compositional series or across a matrix of complex solution compositions. An essential place to start, and the goal of this research, is to quantify the reactivity of crystalline and amorphous SiO2 phases in the complex fluids of natural systems.
Date: June 15, 2001
Creator: Dove, Patricia M.
Object Type: Report
System: The UNT Digital Library
Development and Test of World's First Industrial High-Temperature Superconducting (HTS) Power Cable (open access)

Development and Test of World's First Industrial High-Temperature Superconducting (HTS) Power Cable

Southwire Company has installed the world's first industrial high-temperature superconducting cable system to power three of its main manufacturing plants. The cable consists of three single-phase, 30-m long cables designed to carry 1250 A at 12.4 kV. The cable is cooled by a liquid nitrogen (LN) system that can supply LN at sub-cooled temperatures down to 72 K and at pressures up to 15 atmospheres. The design of the 30-m cables is based upon two 5-m cable prototypes, which were tested at a specially developed facility at ORNL. In addition to critical current and ac loss measurements, simulated fault-current tests were performed at ORNL on the 5-m cables. Cable terminations were designed to allow smooth transition from the cryogenic temperature and pressure environment of the HTS cable to ambient temperature and pressure for copper cables. A dielectric tape material, Cryoflex(trademark), was also developed for use at cryogenic temperatures.
Date: February 15, 2001
Creator: Sinha, U.K.
Object Type: Article
System: The UNT Digital Library
Credit Trading and Wind Power: Issues and Opportunities (open access)

Credit Trading and Wind Power: Issues and Opportunities

OAK-B135 This paper focuses on credits that are derived from wind energy technology, but the same concepts apply to other renewable energy technologies as well. Credit trading can be applied to a wide variety of policies, programs and private market activities and represents a means of tapping into revenue streams that heretofore have largely excluded wind and other renewables. In addition, credit trading can help to ''create'' new revenue streams for wind and other renewables by helping to grow new markets.
Date: January 15, 2001
Creator: Rackstraw, Kevin & Palmisano, John
Object Type: Report
System: The UNT Digital Library