US transportation agencies have been increasingly using recycled asphalt shingles (RAS) in hot mix asphalt (HMA) applications over the last 25 years. Initial use of RAS started with recycled postmanufacturers shingles, but now agencies are showing a growing interest in using post-consumer (tear-off) RAS in asphalt applications. Post-consumer asphalt shingles typically have 20 to 30 percent asph...

We are reporting the fabrication of high efficiency Silicon heterojunction shingle solar cells with very limited performance losses related to cell separation. A clean and innovative separation process was elaborated optimized, based on 45° rotated silicon brick wafers fabrication, allowing alignment preferential cleavage plan (110) bus bars. Hence, a simple but efficient mechanical crack propa...

dpearl('Iitsa.LcsffcduL A story is told in China about a peasant who had worked as a maintenance man in a newly established Western missionary hospital. When he retired to his remote home village, he took with him some hypodermic needles and lots of antibiotics. Heput up a shingle, and wheneversomeone came to him with a fever, he injected the patient with the wonder drugs. A remarkable percenta...

Enhancing Green Paving in Oklahoma Using Recycled Asphalt Shingles Prof. Musharraf Zaman School of Civil Engineering and Environmental Science Each year, an estimated 11 million tons of old asphalt shingles from roofs are disposed of in the United States. In Oklahoma, it costs between $50 and $150 per ton, depending on size and kind of debris, to dispose of these materials in landfills. Recent ...

The Florida Solar Energy Center (FSEC), with the support of the National Renewable Energy Laboratory (NREL), has investigated the thermal performance of solar absorbers which are an integral yet indistinguishable part of a building’s roof. The first roof-integrated solar absorber (RISA) system was retrofitted into FSEC’S Flexible Roof Facility in Cocoa, Florida in September 1998. This “proof-of...

Abstract Buffer device for interstage pyrotechnic separation is the key part to achieving electrical connector plug separation. This paper carries out research on buffer structure in different working conditions and finally designs two kinds of devices, which are respectively applied stage large mass SLMB (Shingle-Like Mass Blocks) small SLMB. Both can control energy absorption size through str...

Significant progress in the development and commercialization of electrically conductive adhesives has been made. This makes shingling a very attractive approach for solar cell interconnection. In this study, we investigate shading tolerance two types modules based on shingle interconnection: first, already commercialized string approach, second, matrix technology where cells are intrinsically ...