EGPs are created by the focusing of a shock produced from an explosive driver via a conical waveguide. In the waveguide, the gases from the explosive along with the trapped air are accelerated and compressed (by Mach ...
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EGPs are created by the focusing of a shock produced from an explosive driver via a conical waveguide. In the waveguide, the gases from the explosive along with the trapped air are accelerated and compressed (by Mach stemming) to such extent that plasma is produced. These EGPs have been measured in controlled experiments to travel at velocities as high as 21,000 km/s with temperatures of 20,000 K. Naval Surface Warfare Center Indian Head Division (NSWC IHD) can be used to perforate the casing of the Naval 5" round and neutralize the explosive fill by initiating a low order or deflagratory process. The EGP couples with the highexplosive fill resulting in a high temperature chemical decomposition along nontraditional kinetic pathways that results in rapid deflagration without detonation. The introduction of an EGPbased technology with a sealed waveguide for the remediation of underwater UXOs provides an innovative alternative to existing BIP operations with far less environmental impact. This technology provides the potential for rapid and nearcomplete consumption of the energetic fill without the associated shock and bubble formation/collapse from a detonating UXO
This project demonstrated a microgrid control framework creating a centrally managed dispatchable generation hub as the power base for networked utility feeder interconnected facilities. The dispatchable generation hu...
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This project demonstrated a microgrid control framework creating a centrally managed dispatchable generation hub as the power base for networked utility feeder interconnected facilities. The dispatchable generation hub is a microgrid managing diesel-based energy generation, renewable generation, demand, and storage assets for power export to support the demand of closely sited military installations.
This field study was a side-by-side demonstration of two VRF heat pump technologies that offer significant potential for energy and cost savings, as well as improved comfort with zoned temperature control. The first V...
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This field study was a side-by-side demonstration of two VRF heat pump technologies that offer significant potential for energy and cost savings, as well as improved comfort with zoned temperature control. The first VRF system was a natural gas engine-driven heat pump (GHP) - an emerging technology designed to reduce peak electric demand and generate savings in both annual energy costs and life-cycle costs compared to conventional equipment. The second VRF system was an electric cold climate heat pump (CCHP) - a relatively mature technology, designed for colder ambient conditions without supplemental heating. This document provides a summary of best practices and lessons learned from the estcp demonstration that can improve performance, energy efficiency, and/or minimize costs. Some of these best practices could be applied to existing HvaC equipment as well as the installation of new equipment.
This technical guide provides a description of suggested activities associated with planning, designing, operating, and decommissioning a mitigation system to address Radon or volatile organic compound (VOC) vapor int...
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This technical guide provides a description of suggested activities associated with planning, designing, operating, and decommissioning a mitigation system to address Radon or volatile organic compound (VOC) vapor intrusion to indoor air. This guide provides a comprehensive list of considerations, and the user is encouraged to apply professional judgement to select the relevant and appropriate elements for each building, based on the site-specific conceptual model, and building-specific conditions. Prior to this research, conventional mitigation system design was typically based only on achieving a specified level of applied vacuum below the floor slab (e.g. ASTM E2121, AARST/ANSI Standards, State Guidance documents for VOC vapor Intrusion and radon posted at: https://***/vapor-intrusion-guidance), with verification via indoor air sampling ad analysis. This research provides additional lines of evidence including radial profiles of vacuum, velocity, travel time, and leakage across the floor slab as well as the mass emissions rate, which increase the level of understanding and confidence in the system design and operation and can identify the presence and potentially also the location of preferential pathways from the subsurface to indoor air.
Remediation of contaminants in low-permeability lithologies (hydraulic conductivities of approximately 10^5 centimeters per second [cm/s] or lower) is a significant challenge for many sites, with conventional technolo...
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Remediation of contaminants in low-permeability lithologies (hydraulic conductivities of approximately 10^5 centimeters per second [cm/s] or lower) is a significant challenge for many sites, with conventional technologies often failing. environmental Permeability Enhancement technology (PET), also known as environmental soil fracturing, is a technology that has shown promise for emplacement of solid (U.S. patent number 7,179,381) or liquid phase amendments into low-permeability lithologies (silts, clays, and some bedrock formations), where standard approaches such as permeation injections (conventional injections into existing pore space) typically fail. This document has been developed under the environmentalsecuritytechnologycertificationprogram (estcp) and is associated with project ER-201430, A Rigorous Demonstration of Permeability Enhancement technology for In Situ Remediation of Low-permeability Media. The purpose is to: 1) demonstrate appropriate uses of PET for various contaminants and lithology; 2) provide guidance on design, implementation, and monitoring of the technology once it has been selected for use; and 3) provide details necessary for procurement of an effective technology implementation.
This project Energy Efficient Phase Change Materials (PCM) Insulation demonstrated the application of phase change materials based insulation, an emerging technology, to mitigate energy losses via building envelopes. ...
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This project Energy Efficient Phase Change Materials (PCM) Insulation demonstrated the application of phase change materials based insulation, an emerging technology, to mitigate energy losses via building envelopes. The idea of mitigating envelope-related energy losses has been at the forefront of the Department of Energy and the Department of Defense High Priority Performance Goals since the Energy Independence and security of 2007 (EISA 07).
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