Chlorine Trifluoride Exposure Testing and Oxidizer Reactivity Results

2010 ◽  
pp. 468-468-27
Author(s):  
James VanOmmeren
Keyword(s):  
Exposure Testing

Exposure of Polymeric Glazing Materials Using NREL’s Ultra-Accelerated Weathering System (UAWs)

2010 ◽  
Author(s):  
Carl Bingham ◽  
Gary Jorgensen ◽  
Amy Wylie
Keyword(s):  
Light Intensity ◽  
Thermal Effects ◽  
Outdoor Exposure ◽  
Exposure Chamber ◽  
Accelerated Weathering ◽  
Intensity Level ◽  
Design And Implementation ◽  
Different Temperatures ◽  
Exposure Testing ◽  
Ultraviolet Irradiance

NREL’s Ultra-Accelerated Weathering System (UAWS) selectively reflects and concentrates natural sunlight ultraviolet irradiance below 475 nm onto exposed samples to provide accelerated weathering of materials while keeping samples within realistic temperature limits. This paper will explain the design and implementation of the UAWS which allow it to simulate the effect of years of weathering in weeks of exposure. Exposure chamber design and instrumentation will be discussed for both a prototype UAWS used to test glazing samples as well as a commercial version of UAWS. Candidate polymeric glazing materials have been subjected to accelerated exposure testing at a light intensity level of up to 50 UV suns for an equivalent outdoor exposure in Miami, FL exceeding 15 years. Samples include an impact modified acrylic, fiberglass, and polycarbonate having several thin UV-screening coatings. Concurrent exposure is carried out for identical sample sets at two different temperatures to allow thermal effects to be quantified along with resistance to UV.

scholarly journals Prototype e-cigarette and the capillary aerosol generator (CAG) comparison and qualification for use in subchronic inhalation exposure testing

2016 ◽  
Vol 50 (12) ◽  
pp. 1284-1293 ◽  
Author(s):  
Michael S. Werley ◽  
John H. Miller ◽  
David B. Kane ◽  
Christopher S. Tucker ◽  
Willie J. McKinney ◽  
...  
Keyword(s):  
Inhalation Exposure ◽  
Aerosol Generator ◽  
Exposure Testing ◽  
Capillary Aerosol Generator

scholarly journals TASK 2.5.5 NATURAL EXPOSURE TESTING IN CALIFORNIA

2010 ◽  
Author(s):  
William A Miller ◽  
Mengdawn Cheng ◽  
Joshua Ryan New ◽  
Levinson Ronnen ◽  
Hashem Akbari ◽  
...  
Keyword(s):  
Natural Exposure ◽  
Exposure Testing

scholarly journals Resistive loading of photovoltaic modules and arrays for long-term exposure testing

2006 ◽  
Vol 14 (6) ◽  
pp. 567-575 ◽  
Author(s):  
C. R. Osterwald ◽  
J. Adelstein ◽  
J. A. del Cueto ◽  
W. Sekulic ◽  
D. Trudell ◽  
...  
Keyword(s):  
Photovoltaic Modules ◽  
Resistive Loading ◽  
Exposure Testing

Ceramic Barrier Filters for Coal-Fueled Gas Turbine Service

1991 ◽  
Author(s):  
M. D. Stephenson ◽  
L. H. Cowell ◽  
R. T. LeCren
Keyword(s):  
Gas Turbine ◽  
Collection Efficiency ◽  
Performance Standards ◽  
Particulate Emissions ◽  
X Rays ◽  
X Ray Diffraction ◽  
Time Profiles ◽  
Exposure Testing ◽  
Face Velocity ◽  
Point Bend

Solar Turbines is developing a coal fueled version of its 3.8 MW Centaur H gas turbine for cogeneration applications. To protect gas turbine components from erosion and corrosion due to impacting particulates, and to meet New Source Performance Standards for particulate emissions, ceramic barrier filters are being employed. The test program includes evaluation of silicon carbide candle filters. Fourteen candles are being tested for 50 h at design temperature and face velocity using the particulate-laden gas stream from a two-stage slagging combustor system. The testing includes determining collection efficiency and obtaining pressure drop versus time profiles. Additionally, exposure testing is being used to determine whether loss in strength, or changes in the chemical or mineralogical structure have occurred. This includes four-point bend testing, X-ray diffraction and scanning electron microscopy with energy dispersive X-rays.

Sign in / Sign up

Export Citation Format

Share Document