Browsing NTNU Open by Author "Ihara, Takeshi"

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    • Accelerated aging of treated aluminum for use as a cool colored material for facades 

      Ihara, Takeshi; Jelle, Bjørn Petter; Gao, Tao; Gustavsen, Arild (Journal article; Peer reviewed, 2016)
      Cool colored materials like membrane sheets and dried coatings exhibit higher reflectances in the near infrared region compared to conventional materials of the same color and are therefore desirable, as they provide energy ...

    • Aerogel Granulate Glazing Facades and their Application Potential from an Energy Saving Perspective 

      Ihara, Takeshi; Gao, Tao; Grynning, Steinar; Jelle, Bjørn Petter; Gustavsen, Arild (Journal article; Peer reviewed, 2015)
      Aerogel granulate glazing systems for energy efficient buildings have various promising properties, including their thermal insulation properties and translucent features. In this study, the energy performance of aerogel ...

    • Aerogel Granule Aging Driven by Moisture and Solar Radiation 

      Ihara, Takeshi; Jelle, Bjørn Petter; Gao, Tao; Gustavsen, Arild (Journal article; Peer reviewed, 2015)
      The application of aerogel in the building and construction sector is very promising; therefore, its durability should be properly addressed. This study focuses on the aging effect of aerogel granules, emphasizing two aging ...

    • Effect of facade components on energy efficiency in office buildings 

      Ihara, Takeshi; Gustavsen, Arild; Jelle, Bjørn Petter (Journal article; Peer reviewed, 2015)
      Properties of facade materials should be considered to determine which of them strongly affect building energy performance, regardless of the building shapes, scales, ideal locations, and building types, and thus may be ...

    • Effective energy solutions using facade materials with highly reflective coatings and aerogel granulate glazing systems 

      Ihara, Takeshi (Doctoral thesis at NTNU;2016:146, Doctoral thesis, 2016)
      We are facing an urgent problem of reducing carbon dioxide emissions in order to mitigate climate change. The building sector is a main source of carbon dioxide emissions. This thesis is trying to contribute to the ...

    • Fatigue Resistance of Double Sealant Composed of Polyisobutylene Sealant Adjacent to Silicone Sealant 

      Ihara, Takeshi; Gustavsen, Arild; Jelle, Bjørn Petter (Journal article; Peer reviewed, 2014)
      With the aid of current sealant technologies, a double sealant comprising adjacent silicone and polyisobutylene sealants may be used to enhance the durability of buildings. The inner silicone sealant is quite durable owing ...

    • Impact of convection on thermal performance of aerogel granulate glazing systems 

      Ihara, Takeshi; Grynning, Steinar; Gao, Tao; Gustavsen, Arild; Jelle, Bjørn Petter (Journal article; Peer reviewed, 2015)
      Among currently available window systems, aerogel granulate glazing systems are considered promising for achieving good thermal and visual comfort in buildings. In aerogel granulate glazing systems, it is important to ...

    • Insulating Glazing Units with Silica Aerogel Granules: The Impact of Particle Size 

      Gao, Tao; Jelle, Bjørn Petter; Ihara, Takeshi; Gustavsen, Arild (Journal article; Peer reviewed, 2014)
      Innovative glazing units with improved thermal and optical performance are important for energy saving in buildings. In this work, light diffusing and thermally insulating aerogel glazing units (AGUs) have been assembled ...

    • Perspective of Aerogel Glazings in Energy Efficient Buildings 

      Gao, Tao; Ihara, Takeshi; Grynning, Steinar; Jelle, Bjørn Petter; Lien, Anne Gunnarshaug (Journal article; Peer reviewed, 2016)
      The application perspective of aerogel glazings in energy efficient buildings has been discussed by evaluating their energy efficiency, process economics, and environmental impact. For such a purpose, prototype aerogel ...

    • Sealant Aging and its Correlation with Facade Reflectance 

      Ihara, Takeshi; Gustavsen, Arild; Jelle, Bjørn Petter (Journal article; Peer reviewed, 2014)
      A highly reflective facade may enhance the durability of sealant joints. This study investigates that reflective facades reduce thermal movement loading to sealant joints due to less fluctuations of surface temperature, ...