The Experts below are selected from a list of 7686 Experts worldwide ranked by ideXlab platform

Jerry Petersheim - One of the best experts on this subject based on the ideXlab platform.

  • A novel technique for the production of cool colored concrete tile and asphalt Shingle roofing products
    Solar Energy Materials and Solar Cells, 2010
    Co-Authors: Ronnen Levinson, Wayne Skilton, Kurt Wood, Hoda Akbari, Paul Berdahl, Jerry Petersheim
    Abstract:

    The widespread use of solar-reflective roofing materials can save energy, mitigate urban heat islands and slow global warming by cooling the roughly 20% of the urban surface that is roofed. In this study we created prototype solar-reflective nonwhite concrete tile and asphalt Shingle roofing materials using a two-layer spray coating process intended to maximize both solar reflectance and factory-line throughput. Each layer is a thin, quick-drying, pigmented latex paint based on either acrylic or a poly(vinylidene fluoride)/acrylic blend. The first layer is a titanium dioxide rutile white basecoat that increases the solar reflectance of a gray-cement concrete tile from 0.18 to 0.79, and that of a Shingle surfaced with bare granules from 0.06 to 0.62. The second layer is a "cool" color topcoat with weak near-infrared (NIR) absorption and/or strong NIR backscattering. Each layer dries within seconds, potentially allowing a factory line to pass first under the white spray, then under the color spray. We combined a white basecoat with monocolor topcoats in various shades of red, brown, green and blue to prepare 24 cool colored prototype tiles and 24 cool colored prototypes Shingles. The solar reflectances of the tiles ranged from 0.26 (dark brown; CIELAB lightness value L*=29) to 0.57 (light green; L*=76); those of the Shingles ranged from 0.18 (dark brown; L*=26) to 0.34 (light green; L*=68). Over half of the tiles had a solar reflectance of at least 0.40, and over half of the Shingles had a solar reflectance of at least 0.25. ?? 2009 Elsevier B.V.

  • a novel technique for the production of cool colored concrete tile and asphalt Shingle roofing products
    Solar Energy Materials&Solar Cells, 2009
    Co-Authors: Ronnen Levinson, Wayne Skilton, Paul Berdahl, Hashem Akbari, Kurt A Wood, Jerry Petersheim
    Abstract:

    The widespread use of solar-reflective roofing materials can save energy, mitigate urban heat islands and slow global warming by cooling the roughly 20% of the urban surface that is roofed. In this study we created prototype solar-reflective nonwhite concrete tile and asphalt Shingle roofing materials using a two-layer spray coating process intended to maximize both solar reflectance and factory-line throughput. Each layer is a thin, quick-drying, pigmented latex paint based on either acrylic or a poly(vinylidene fluoride)/acrylic blend. The first layer is a titanium dioxide rutile white basecoat that increases the solar reflectance of a gray-cement concrete tile from 0.18 to 0.79, and that of a Shingle surfaced with bare granules from 0.06 to 0.62. The second layer is a 'cool' color topcoat with weak near-infrared (NIR) absorption and/or strong NIR backscattering. Each layer dries within seconds, potentially allowing a factory line to pass first under the white spray, then under the color spray. We combined a white basecoat with monocolor topcoats in various shades of red, brown, green and blue to prepare 24 cool color prototype tiles and 24 cool color prototypes Shingles. The solar reflectances of the tiles ranged from 0.26 (dark brown; CIELAB lightness value L* =more » 29) to 0.57 (light green; L* = 76); those of the Shingles ranged from 0.18 (dark brown; L* = 26) to 0.34 (light green; L* = 68). Over half of the tiles had a solar reflectance of at least 0.40, and over half of the Shingles had a solar reflectance of at least 0.25.« less

Ronnen Levinson - One of the best experts on this subject based on the ideXlab platform.

  • A novel technique for the production of cool colored concrete tile and asphalt Shingle roofing products
    Solar Energy Materials and Solar Cells, 2010
    Co-Authors: Ronnen Levinson, Wayne Skilton, Kurt Wood, Hoda Akbari, Paul Berdahl, Jerry Petersheim
    Abstract:

    The widespread use of solar-reflective roofing materials can save energy, mitigate urban heat islands and slow global warming by cooling the roughly 20% of the urban surface that is roofed. In this study we created prototype solar-reflective nonwhite concrete tile and asphalt Shingle roofing materials using a two-layer spray coating process intended to maximize both solar reflectance and factory-line throughput. Each layer is a thin, quick-drying, pigmented latex paint based on either acrylic or a poly(vinylidene fluoride)/acrylic blend. The first layer is a titanium dioxide rutile white basecoat that increases the solar reflectance of a gray-cement concrete tile from 0.18 to 0.79, and that of a Shingle surfaced with bare granules from 0.06 to 0.62. The second layer is a "cool" color topcoat with weak near-infrared (NIR) absorption and/or strong NIR backscattering. Each layer dries within seconds, potentially allowing a factory line to pass first under the white spray, then under the color spray. We combined a white basecoat with monocolor topcoats in various shades of red, brown, green and blue to prepare 24 cool colored prototype tiles and 24 cool colored prototypes Shingles. The solar reflectances of the tiles ranged from 0.26 (dark brown; CIELAB lightness value L*=29) to 0.57 (light green; L*=76); those of the Shingles ranged from 0.18 (dark brown; L*=26) to 0.34 (light green; L*=68). Over half of the tiles had a solar reflectance of at least 0.40, and over half of the Shingles had a solar reflectance of at least 0.25. ?? 2009 Elsevier B.V.

  • a novel technique for the production of cool colored concrete tile and asphalt Shingle roofing products
    Solar Energy Materials&Solar Cells, 2009
    Co-Authors: Ronnen Levinson, Wayne Skilton, Paul Berdahl, Hashem Akbari, Kurt A Wood, Jerry Petersheim
    Abstract:

    The widespread use of solar-reflective roofing materials can save energy, mitigate urban heat islands and slow global warming by cooling the roughly 20% of the urban surface that is roofed. In this study we created prototype solar-reflective nonwhite concrete tile and asphalt Shingle roofing materials using a two-layer spray coating process intended to maximize both solar reflectance and factory-line throughput. Each layer is a thin, quick-drying, pigmented latex paint based on either acrylic or a poly(vinylidene fluoride)/acrylic blend. The first layer is a titanium dioxide rutile white basecoat that increases the solar reflectance of a gray-cement concrete tile from 0.18 to 0.79, and that of a Shingle surfaced with bare granules from 0.06 to 0.62. The second layer is a 'cool' color topcoat with weak near-infrared (NIR) absorption and/or strong NIR backscattering. Each layer dries within seconds, potentially allowing a factory line to pass first under the white spray, then under the color spray. We combined a white basecoat with monocolor topcoats in various shades of red, brown, green and blue to prepare 24 cool color prototype tiles and 24 cool color prototypes Shingles. The solar reflectances of the tiles ranged from 0.26 (dark brown; CIELAB lightness value L* =more » 29) to 0.57 (light green; L* = 76); those of the Shingles ranged from 0.18 (dark brown; L* = 26) to 0.34 (light green; L* = 68). Over half of the tiles had a solar reflectance of at least 0.40, and over half of the Shingles had a solar reflectance of at least 0.25.« less

Pornchai Supnithi - One of the best experts on this subject based on the ideXlab platform.

  • A spinstand study in determining the optimum shingling percentage for Shingled write recording
    IEEE Transactions on Magnetics, 2012
    Co-Authors: Selvan Chandrasekaran, Pornchai Supnithi
    Abstract:

    One new technology in magnetic recording, Shingle write recording, has recently received attention from many researchers as it is one of the candidates to extend the perpendicular magnetic recording. In this paper, we determine and propose the optimum shingling percentage experimentally using various write width head samples with various shingling or overlapping track pitches. We analyze and evaluate the performance characteristics of key parameters that would affect the write ability of the Shingled write recording.

  • A spinstand study in determining the optimum shingling percentage for Shingled write recording
    2012 Digest APMRC, 2012
    Co-Authors: Selvan Chandrasekaran, Pornchai Supnithi
    Abstract:

    Shingle write recording has recently received attention from many researchers as it is one of the candidates to extend the perpendicular magnetic recording. In this paper, we determine and propose the optimum shingling percentage by using various write width samples and various shingling or overlapping track pitches experimentally. We study the performance characteristics of key parameters that would affect the write ability of the Shingled write recording.

  • A spinstand study on the feasibility of Shingled write recording
    The 8th Electrical Engineering Electronics Computer Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011, 2011
    Co-Authors: Selvan Chandrasekaran, Pornchai Supnithi
    Abstract:

    Super-paramagnetic effect will limit the areal density beyond 1 Tb/in2 of the perpendicular magnetic recording in hard disk drive technology. Based on the road map predictions, the entire industry is working towards alternative technologies such as heat-assisted magnetic recording (HAMR), bit patterned media (BPM), microwave-assisted magnetic recording (MAMR) and Shingled write recording (SWR) or Shingled magnetic recording (SMR). Shingled write recording is based on overlapping the written data tracks; hence, some guard band spaces are saved. Shingled write recording appears as one of the promising candidates to extend the areal density in the future. In this study, we focus on the feasibility of the Shingled write recording using the spinstand testers. The experimental results on the writability parameters measured on the spinstand testers such as reverse overwrite (ROW), signal-to-noise ratio (SNR) and bit error rate (BER) suggest that the conventional perpendicular magnetic recording could be extended using the Shingle method. In addition, a wide range of the writer widths could be used for the Shingle unlike the conventional perpendicular recording. However, the read channel integration needs to play a major role to make the Shingled write recording become truly feasible.

K.-d. Rasch - One of the best experts on this subject based on the ideXlab platform.

Paul Berdahl - One of the best experts on this subject based on the ideXlab platform.

  • A novel technique for the production of cool colored concrete tile and asphalt Shingle roofing products
    Solar Energy Materials and Solar Cells, 2010
    Co-Authors: Ronnen Levinson, Wayne Skilton, Kurt Wood, Hoda Akbari, Paul Berdahl, Jerry Petersheim
    Abstract:

    The widespread use of solar-reflective roofing materials can save energy, mitigate urban heat islands and slow global warming by cooling the roughly 20% of the urban surface that is roofed. In this study we created prototype solar-reflective nonwhite concrete tile and asphalt Shingle roofing materials using a two-layer spray coating process intended to maximize both solar reflectance and factory-line throughput. Each layer is a thin, quick-drying, pigmented latex paint based on either acrylic or a poly(vinylidene fluoride)/acrylic blend. The first layer is a titanium dioxide rutile white basecoat that increases the solar reflectance of a gray-cement concrete tile from 0.18 to 0.79, and that of a Shingle surfaced with bare granules from 0.06 to 0.62. The second layer is a "cool" color topcoat with weak near-infrared (NIR) absorption and/or strong NIR backscattering. Each layer dries within seconds, potentially allowing a factory line to pass first under the white spray, then under the color spray. We combined a white basecoat with monocolor topcoats in various shades of red, brown, green and blue to prepare 24 cool colored prototype tiles and 24 cool colored prototypes Shingles. The solar reflectances of the tiles ranged from 0.26 (dark brown; CIELAB lightness value L*=29) to 0.57 (light green; L*=76); those of the Shingles ranged from 0.18 (dark brown; L*=26) to 0.34 (light green; L*=68). Over half of the tiles had a solar reflectance of at least 0.40, and over half of the Shingles had a solar reflectance of at least 0.25. ?? 2009 Elsevier B.V.

  • a novel technique for the production of cool colored concrete tile and asphalt Shingle roofing products
    Solar Energy Materials&Solar Cells, 2009
    Co-Authors: Ronnen Levinson, Wayne Skilton, Paul Berdahl, Hashem Akbari, Kurt A Wood, Jerry Petersheim
    Abstract:

    The widespread use of solar-reflective roofing materials can save energy, mitigate urban heat islands and slow global warming by cooling the roughly 20% of the urban surface that is roofed. In this study we created prototype solar-reflective nonwhite concrete tile and asphalt Shingle roofing materials using a two-layer spray coating process intended to maximize both solar reflectance and factory-line throughput. Each layer is a thin, quick-drying, pigmented latex paint based on either acrylic or a poly(vinylidene fluoride)/acrylic blend. The first layer is a titanium dioxide rutile white basecoat that increases the solar reflectance of a gray-cement concrete tile from 0.18 to 0.79, and that of a Shingle surfaced with bare granules from 0.06 to 0.62. The second layer is a 'cool' color topcoat with weak near-infrared (NIR) absorption and/or strong NIR backscattering. Each layer dries within seconds, potentially allowing a factory line to pass first under the white spray, then under the color spray. We combined a white basecoat with monocolor topcoats in various shades of red, brown, green and blue to prepare 24 cool color prototype tiles and 24 cool color prototypes Shingles. The solar reflectances of the tiles ranged from 0.26 (dark brown; CIELAB lightness value L* =more » 29) to 0.57 (light green; L* = 76); those of the Shingles ranged from 0.18 (dark brown; L* = 26) to 0.34 (light green; L* = 68). Over half of the tiles had a solar reflectance of at least 0.40, and over half of the Shingles had a solar reflectance of at least 0.25.« less