| Main Title |
Environmental exposure system for studying air pollution damage to materials / |
| Author |
Spence, John W. ;
Stump, Fred D. ;
Haynie, Fred H. ;
Upham., James B.
|
| Other Authors |
|
| CORP Author |
National Environmental Research Center, Research Triangle Park, N.C. |
| Publisher |
Environmental Sciences Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, |
| Year Published |
1975 |
| Report Number |
EPA-650/3-75-001 |
| Stock Number |
PB240615 |
| OCLC Number |
52568204 |
| Subjects |
Air--Pollution--Environmental aspects ;
Building materials--Deterioration
|
| Additional Subjects |
Air pollution ;
Test equipment ;
Experimental design ;
Sulfur dioxide ;
Nitrogen ;
Ozone ;
Accelerated tests ;
Weathering ;
Humidity chambers ;
Atmospheric corrosion tests ;
Simulation ;
Air pollution effects(Materials)
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EKBD |
EPA-650/3-75-001 |
|
Research Triangle Park Library/RTP, NC |
01/03/2017 |
| ELBD ARCHIVE |
EPA 650-3-75-001 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ELBD RPS |
EPA 650-3-75-001 |
repository copy |
AWBERC Library/Cincinnati,OH |
11/20/2018 |
| ERAD |
EPA 650/3-75-001 |
|
Region 9 Library/San Francisco,CA |
03/18/2013 |
| NTIS |
PB-240 615 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
vi, 38 pages : illustrations ; 28 cm. |
| Abstract |
Design features of a controlled-environment exposure system consisting of five chambers are described. The purpose of the environmental system is to provide simulated environments for conducting statistical experiments for determining pollutant damage to materials. Design features include independent controls for regulating temperature, relative humidity, and concentration of gaseous sulfur dioxide, nitrogen dioxide, and ozone. To achieve accelerated weathering, the system also includes a variable dew/light cycle that incorporates chill racks to produce dew and xenon lamps to simulate sunlight. Before initiating exposure studies, differences in lighting and pollutant distribution among the chambers were minimized to below 10 percent variations for 95 percent of the measurements. |
| Notes |
"EPA-650/3-75-001 " "January 1975." PB 240 615--NTIS. |
