Windows in the buildings of tomorrow: Energy losers or energy gainers?

Grynning, Steinar; Gustavsen, Arild; Time, Berit; Jelle, Bjørn Petter

doi:10.1016/j.enbuild.2013.02.029

Cited by 184 publications

(86 citation statements)

References 6 publications

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“…For additional information on windows and glazing technologies, see e.g., the studies by Baetens et al [102] for smart windows, Bellia et al [129] for solar shading systems, Cuce and Riffat [130] for innovative glazing technologies, Gao et al [131,132] and Ihara et al [133][134][135] for aerogel-related glazing aspects, Grynning et al [136] for windows as energy losers or energy gainers, Gustavsen et al [137] for key elements and materials performance targets for highly insulating window frames, Hee et al [138] for daylighting and energy savings in buildings, Jelle [139,140] for solar radiation glazing factor factors and electrochromics, and Jelle et al [7,141] for fenestration of today and tomorrow and solar protection factors.…”

Section: Various Aspectsmentioning

confidence: 99%

Building Integrated Photovoltaics: A Concise Description of the Current State of the Art and Possible Research Pathways

Jelle

2015

Energies

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Abstract:Building integrated photovoltaics (BIPV) offer an aesthetical, economical and technical solution to integrate solar cells harvesting solar radiation to produce electricity within the climate envelopes of buildings. Photovoltaic (PV) cells may be mounted above or onto the existing or traditional roofing or wall systems. However, BIPV systems replace the outer building envelope skin, i.e., the climate screen, hence serving simultanously as both a climate screen and a power source generating electricity. Thus, BIPV may provide savings in materials and labor, in addition to reducing the electricity costs. Hence, for the BIPV products, in addition to specific requirements put on the solar cell technology, it is of major importance to have satisfactory or strict requirements of rain tightness and durability, where building physical issues like e.g., heat and moisture transport in the building envelope also have to be considered and accounted for. This work, from both a technological and scientific point of view, summarizes briefly the current state-of-the-art of BIPV, including both BIPV foil, tiles, modules and solar cell glazing products, and addresses possible research pathways for BIPV in the years to come.

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Section: Various Aspectsmentioning

confidence: 99%

Building Integrated Photovoltaics: A Concise Description of the Current State of the Art and Possible Research Pathways

Jelle

2015

Energies

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“…For studies concerning high-performance window frames and window spacers it is referred to the works by Gustavsen et al ( , 2008, Jelle et al (2012a) and Van Den Bergh et al (2013). Grynning et al (2013) studied the energy balance of a window addressing both heat losses and heat gains, and thus also both heating and cooling demands. As solar cells normally are covered by glass panes or other transparent materials, characterization of the solar radiation throughput in glass and other materials (e.g.…”

Section: Introductionmentioning

confidence: 99%

Solar radiation glazing factors for window panes, glass structures and electrochromic windows in buildings—Measurement and calculation

Jelle

2013

Solar Energy Materials and Solar Cells

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163

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Window panes, glass structures and electrochromic windows in buildings may be characterized by a number of solar radiation glazing factors, i.e. ultraviolet solar transmittance, visible solar transmittance, solar transmittance, solar material protection factor, solar skin protection factor, external visible solar reflectance, internal visible solar reflectance, solar reflectance, solar absorbance, emissivity, solar factor and colour rendering factor. Comparison of these solar quantities for different glass fabrications enables one to evaluate and thus select the most appropriate glass material or system for the specific buildings and applications. Measurements and calculations were carried out on various glass materials, including three electrochromic window devices, and several two-layer and three-layer window pane configurations.

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“…However, energy consumed, in this case by HVAC systems for heating and cooling, must kept in mind. The U-value and G-value of the glass are important factors in terms of cooling and heating energy consumption, and lowering the U-value respectively decreases the energy consumption for different WWR and increases the energy efficiency of the building [29]. Most of NZEBs in research projects apply yearly balance to support their used methods [30], and the same concept is applied in this paper to investigate optimizing public building towards net zero energy.…”

Section: Literature Reviewmentioning

confidence: 99%

Optimizing Existing Multistory Building Designs towards Net-Zero Energy

AbuGrain

Alibaba

2017

Sustainability

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Recent global developments in awareness and concerns about environmental problems have led to reconsidering built environment approaches and construction techniques. One of the alternatives is the principle of low/zero-energy buildings. This study investigates the potentials of energy savings in an existing multi-story building in the Mediterranean region in order to achieve net-zero energy as a solution to increasing fossil fuel prices. The Colored building at the Faculty of Architecture, Eastern Mediterranean University, Cyprus was chosen as a target of this study to be investigated and analyzed in order to know how energy efficiency strategies could be applied to the building to reduce annual energy consumption. Since this research objective is to develop a strategy to achieve net-zero energy in existing buildings, case study and problem solving methodologies were applied in this research in order to evaluate the building design in a qualitative manner through observations, in addition to a quantitative method through an energy modeling simulation to achieve desirable results which address the problems. After optimizing the building energy performance, an alternative energy simulation was made of the building in order to make an energy comparison analysis, which leads to reliable conclusions. These methodologies and the strategies used in this research can be applied to similar buildings in order to achieve net-zero energy goals.

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Windows in the buildings of tomorrow: Energy losers or energy gainers?

Cited by 184 publications

References 6 publications

Building Integrated Photovoltaics: A Concise Description of the Current State of the Art and Possible Research Pathways

Building Integrated Photovoltaics: A Concise Description of the Current State of the Art and Possible Research Pathways

Solar radiation glazing factors for window panes, glass structures and electrochromic windows in buildings—Measurement and calculation

Optimizing Existing Multistory Building Designs towards Net-Zero Energy

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