One of these inventions, 'Hybrid Hollow Silica Particles with Unprecedentedly Low Thermal Conductivity', recently won the prestigious National Innovation Award at TechConnect. This project resulted in the development of a low-cost transparent thermal insulation material for fenestration systems, which was then licensed to a prominent industry partner, as well as the invention of several new ultralow thermal insulation materials. Second-generation prototype boards have already reached between R-11.4 and R-11.9 per inch, demonstrating a higher thermal performance than existing commercially-available products.Īnother early-stage research project-previously funded by BTO and hosted at ORNL-similarly focused on the development of new approaches for low-cost and highly-thermally-insulating materials. The goal of this project is to reach an R-value of R-12 per inch, providing a low-cost alternative to vacuum insulation. The first iteration of this nanoparticle-based insulation material has been shown to be significantly more mechanically robust than aerogel insulation.Īnother project, where BTO is partnering with Oak Ridge National Laboratory (ORNL) and Nanopore, has developed 2-inch thick polyisocyanurate board insulation with modified atmosphere insulation cores. As part of one ongoing project, BTO is partnering with Lawrence Berkeley National Laboratory (LBNL) to develop a novel insulation using nanoscale phonon engineering-specifically optimizing surface energy, particle size, and acoustic property mismatch-to achieve or exceed an R-value of R-12 per inch at a significantly lower cost than existing state-of-the-art insulation technologies. The Energy Department’s Building Technologies Office (BTO) continues to drive advances in early-stage research and development (R&D) of next-generation residential and commercial building envelope technologies that can reduce uncontrolled air and moisture exchange, decrease thermal losses and gains, and improve occupant comfort.īTO is pursuing R&D in multiple areas, including developing new materials, evaluating ultra-low thermal conductivity materials and characterizing a wide-range of building envelope applications. Innovations in the building envelope have historically been relatively slow-moving-no major improvements in thermal performance have been made to insulation materials since the 1970s-but the industry is now making some exciting new strides in the development of more efficient, high performance envelope materials and systems. A properly designed and constructed building envelope can greatly increase a building’s energy savings, comfort, and indoor air quality. When a military installation or Government - related facility(whether or not specifically named) is located partially within more than one city or county boundary, the applicable per diem rate for the entire installation or facility is the higher of the rates which apply to the cities and / or counties, even though part(s) of such activities may be located outside the defined per diem locality.The building envelope comprises all of the elements of the outer shell separating the indoor from the outdoor environment. Per diem localities with county definitions shall include "all locations within, or entirely surrounded by, the corporate limits of the key city as well as the boundaries of the listed counties, including independent entities located within the boundaries of the key city and the listed counties (unless otherwise listed separately)." Unless otherwise specified, the per diem locality is defined as "all locations within, or entirely surrounded by, the corporate limits of the key city, including independent entities located within those boundaries." Traveler reimbursement is based on the location of the work activities and not the accommodations, unless lodging is not available at the work activity, then the agency may authorize the rate where lodging is obtained. * M&V results demonstrate deployment potential for GSA GPG-007: Hi-R Low-E Window Retrofit System, December 2013*.GPG-010: Chromogenic Windows: Electrochromic and Thermochromic, March 2014.GPG-011: Vacuum Insulated Panels for Roofing Applications, March 2014.GPG-017: Solar Control Films, January 2015.GPG-032: Electrochromic Windows for Land Ports of Entry, May 2015*.GPG-032: Low-E Window Film, February 2017*.GPG-033: Electrochromic Windows for Office Space, November 2017*.GPG-036: Dual-Zone Indoor Shades, September 2018.GPG-048: Lightweight Quad-Pane Windows, November 2021*.GPG-049: Lightweight Secondary Windows, November 2021*.Here are the published results, most recent on top. The GPG program, working with federal laboratories, has tested the following technologies in GSA buildings. It also helps determine the amount of energy required to establish a comfortable indoor environment. The building envelope acts as a thermal barrier.
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