RONALD LEE SCHWENNINGER
Pilots at Hampton Oaks Dr, Allison Park, PA
License number
Pennsylvania A1697503
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
3247 Hampton Oaks Dr, Allison Park, PA 15101
Personal information
See more information about RONALD LEE SCHWENNINGER at radaris.comName
Address
Phone
Glenshaw, PA
2640 Monroeville Blvd, Monroeville, PA 15146
3247 Hampton Oaks Dr, Allison Park, PA 15101
Professional information
See more information about RONALD LEE SCHWENNINGER at trustoria.com
Method Of Reducing Redox Ratio Of Molten Glass And The Glass Made Thereby
Method Of Reducing Redox Ratio Of Molten Glass And The Glass Made Thereby
US Patent:
2013003, Feb 14, 2013
Filed:
Oct 17, 2012
Appl. No.:
13/653613
Inventors:
Ronald L. Schwenninger - Allison Park PA, US
Assignee:
PPG INDUSTRIES OHIO, INC. - Cleveland OH
International Classification:
C03B 5/225, C03C 3/00, G02B 1/11, C03B 3/00, C03B 18/02, C03C 3/087, C03B 5/16
US Classification:
359601, 501 70, 501 11, 651341, 65 83, 651345, 65 90, 65 992, 651344
Abstract:
A soda-lime-silica glass for solar collector cover plates and solar mirrors has less than 0.010 weight percent total iron as FeO, a redox ratio of less than 0.350, less than 0.0025 weight percent CeO, and spectral properties that include a visible transmission, and a total solar infrared transmittance, of greater than 90% at a thickness of 5.5 millimeters, and reduced solarization. In one non-limiting embodiment of invention, the glass is made by heating a pool of molten soda-lime-silica with a mixture of combustion air and fuel gas having an air firing ratio of greater than 11, or an oxygen firing ratio of greater than 2.31. In another non-limiting embodiment of the invention, streams of oxygen bubbles are moved through a pool of molten glass. In both embodiments, the oxygen oxidizes ferrous iron to ferric iron to reduce the redox ratio.