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Wind Turbine Impact on Radar Overview of the Interagency Field Test and Evaluation Program.
Abstract Not Provided
Interagency Field Test and Evaluation (IFT&E) Studying Methods for Mitigating Wind Turbine Effects on Radars.
Abstract Not Provided
Could Biomass-Fueled Boilers Be Operated At Higher Steam Temperatures? 2. Field Tests Of Candidate Superheater Alloys
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Field Testing LIDAR-Based Feed-Forward Controls on the NREL Controls Advanced Research Turbine
Abstract not provided
Collaboration and Field Testing of Automated Air Samplers for International Safeguards Applications.
Abstract not provided.
Analysis of Lacquer Deposits and Plugging Found in Field-Tested EGR Coolers
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FIELD TEST AND EVALUATION OF RESIDENTIAL GROUND SOURCE HEAT PUMP SYSTEMS USING ALTERNATIVE VERTICAL-BORE GROUND HEAT EXCHANGERS
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FIELD TESTING WITH UNATTENDED ENVIRONMENTAL SAMPLING DEVICES
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Could Biomass-Fueled Boilers Be Operated At Higher Steam Temperatures? 2. Field Tests Of Candidate Superheater Alloys
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Laboratory and Field Testing of Commercially Available Detectors for the Identification of Chemicals of Interest in the Nuclear Fuel Cycle for the Detection of Undeclared Activities
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Building America Case Study: Field Testing of Compartmentalization Methods for Multifamily Construction (Fact Sheet)
The 2012 IECC has an airtightness requirement of 3 air changes per hour at 50 Pascals test pressure for both single family and multifamily construction in Climate Zones 3-8. Other programs (LEED, ASHRAE 189, ASHRAE 62.2) have similar or tighter compartmentalization requirements, thus driving the need for easier and more effective methods of compartmentalization in multifamily buildings.
Technology Solutions Case Study: Field Testing of Compartmentalization Methods for Multifamily Construction
Fire-resistance rated (or area separation) wall assemblies present a great difficulty in air sealing/compartmentalization, particularly in townhouse construction. To address this challenge, Building Science Corporation partnered with builder K. Hovnanian Homes to determine whether taping exterior sheathing details improves air sealing in townhouse and multifamily construction, and to better understand air leakage pathways.
Technology Solutions Case Study: Field Testing an Unvented Roof with Asphalt Shingles in a Cold Climate
Test houses with unvented roof assemblies were built to measure long-term moisture performance, in the Chicago area (5A) and the Houston area (2A). The Chicago-area test bed had seven experimental rafter bays, including a "control" vented compact roof, and six unvented roof variants with cellulose or fiberglass insulation. The interior was run at 50% RH. All roofs except the vented cathedral assembly experienced wood moisture contents and RH levels high enough to constitute failure. Disassembly at the end of the experiment showed that the unvented fiberglass roofs had wet sheathing and mold growth. In contrast, the cellulose roofs only had slight issues, such as rusted fasteners and sheathing grain raise.
NWTC Researchers Field-Test Advanced Control Turbine Systems to Increase Performance, Decrease Structural Loading of Wind Turbines and Plants
Researchers at the National Renewable Energy Laboratory's (NREL's) National Wind Technology Center (NWTC) are studying component controls, including new advanced actuators and sensors, for both conventional turbines as well as wind plants. This research will help develop innovative control strategies that reduce aerodynamic structural loads and improve performance. Structural loads can cause damage that increase maintenance costs and shorten the life of a turbine or wind plant.
Building America Case Study: Field Testing an Unvented Roof with Asphalt Shingles in a Cold Climate, Boilingbrook, Illinois
Insulating roofs with dense-pack cellulose (instead of spray foam) has moisture risks, but is a lower cost approach. If moisture risks could be addressed, buildings could benefit from retrofit options, and the ability to bring HVAC systems within the conditioned space. Test houses with unvented roof assemblies were built to measure long-term moisture performance, in the Chicago area (5A) and the Houston area (2A). The Chicago-area test bed had seven experimental rafter bays, including a 'control' vented compact roof, and six unvented roof variants with cellulose or fiberglass insulation. The interior was run at 50% RH. All roofs except the vented cathedral assembly experienced wood moisture contents and RH levels high enough to constitute failure. Disassembly at the end of the experiment showed that the unvented fiberglass roofs had wet sheathing and mold growth. In contrast, the cellulose roofs only had slight issues, such as rusted fasteners and sheathing grain raise. The Houston-area roof was an unvented attic insulated with spray-applied fiberglass. Most ridges and hips were built with a 'diffusion vent' detail, capped with vapor permeable roof membrane. Some ridge sections were built as a conventional unvented roof, as a control. In the control unvented roofs, roof peak RHs reached high levels in the first winter; as exterior conditions warmed, RHs quickly fell. In contrast, the diffusion vent roofs had drier conditions at the roof peak in wintertime, but during the summer, RHs and MCs were higher than the unvented roof (albeit in the safe range).