A study of the daylighting performance and energy use in heavily obstructed residential buildings via computer simulation techniques

Li, Danny H.W.; Wong, S.L.; Tsang, C.L.; Cheung, Gary H.W.

doi:10.1016/j.enbuild.2006.04.001

Cited by 98 publications

(50 citation statements)

References 9 publications

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“…These might be reasons why, the topic of the integrated evaluation of window design and its combined effect on heating, cooling and lighting has been less explored in residential buildings. A number of studies on the topic of lighting in residential buildings have evaluated daylight availability and the potential for savings in artificial lighting with various geometries and window sizes [7][8][9]. Studies on reducing the heating and cooling demand in residential buildings have considered the influence of window orientation, size and glazing type and suggested that south-facing window size is important for reducing heating demand [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Impact of façade window design on energy, daylighting and thermal comfort in nearly zero-energy houses

Vanhoutteghem

Skarning

Hviid

et al. 2015

Energy and Buildings

130

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Appropriate window solutions are decisive for the design of 'nearly zero-energy' buildings with healthy and comfortable indoor environment. This paper focuses on the relationship between size, orientation and glazing properties of façade windows for different side-lit room geometries in Danish 'nearly zero-energy' houses. The effect of these parameters on space heating demand, daylighting and thermal environment is evaluated by means of EnergyPlus and DAYSIM and presented in charts illustrating how combinations of design parameters with minimum space heating demand can be selected within a solution space defined by targets for daylighting and thermal comfort. In contrast with existing guidelines, the results show an upper limit for energy savings and utilisation of solar gains in south-oriented rooms. Instead, low U-values are needed in both north-and south oriented rooms before large window areas lead to reductions in space heating demand. Furthermore, windows in south-oriented rooms have to be carefully designed to prevent overheating. Design options for prevention of overheating, however, correspond well with options for low space heating demand. Glazings with solar control coating are therefore obvious alternatives to dynamic solar shadings. Regarding room geometry, deep or narrow southoriented rooms show difficulties in reaching sufficient daylight levels without overheating.

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Section: Introductionmentioning

confidence: 99%

Impact of façade window design on energy, daylighting and thermal comfort in nearly zero-energy houses

Vanhoutteghem

Skarning

Hviid

et al. 2015

Energy and Buildings

130

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“…Nikiforiadis e Pitts (2003) contestam a avaliação de trabalhos que analisam a iluminação natural e que não levam em consideração o entorno. Littlefair (1998;2001), Capeluto (2003), Ünver et al (2003) Li et al (2006) também ressaltam que a altura das edificações é fator influenciador da disponibilidade de iluminação natural no ambiente interno, enquanto Capeluto (2003) complementa que as edificações obstruidoras altas e alongadas afetam sensivelmente a quantidade de iluminação natural e a sua distribuição no ambiente interno de uma edificação.…”

Section: Introductionunclassified

“…Ünver et al (2003Ünver et al ( ) e Capeluto (2003 citam a orientação das aberturas como uma das variáveis de influência da iluminação natural no ambiente interno. Li et al (2006) caracterizam as janelas como as aberturas essencialmente usadas nos edifícios para permitir a admissão da luz natural para o ambiente interno. Tais aberturas configuram-se nas fachadas, que, por sua vez, em muitas situações, orientam-se conforme as vias.…”

Section: Introductionunclassified

Análise das relações entre a geometria urbana e a orientação das aberturas na disponibilidade de iluminação natural no ambiente interno - DOI: 10.5752/P.2316-1752.2013v20n26p151

et al. 2014

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Palavras-chave: Iluminação natural; Orientação das aberturas; Largura de via; Altura da edificação obstruidora. AbstractThis study presents a discussion related to daylighting in the indoor environment, with the research goal of examining the relationship between urban geometry and the orientation of openings in the availability of daylighting in the indoor environment. The ratio between road width (L) and the height of obstructing buildings (H) was used in urban geometry, adopting the H=2,0.L, H=2,5.L and H=3,0.L ratios. North, South, East, West, Northeast, Southeast, Northwest, and Southwest orientations were used for the openings. The overall average illuminance values of the indoor environment were compared with intervals of UDI (Useful Daylight Illuminance). For that, the overall average illuminance values were generated by simulation using the Tr opLux program, in a rectangular environment inserted in an urban setting in the city of Vitória, latitude 20°19' S. Simulations were carried out for three types of sky patterns from CIE (Commission Internationale L´aclairage). It is noted that, for all three analyzed sky types, illuminance was reduced as the ratio between H and L increased. For sky type 3 (cloudy), it was revealed that, for all urban geometry ratios for all orientations of the openings, all illuminance values are within a sufficient range but in need of additional lighting. Sky type 3 (partly cloudy) and sky type 12 (clear), most illuminances are in the sufficient range, with a few exceptions observed in openings with South, Southwest, West, and Southeast orientations. The highest rates of the indoor illuminance for all sky types was also found to occur when the urban geometry ratios vary from H=2,0.L to H=2,5.L. For sky type 7 (partly cloudy) and sky type 12 (clear), as the ratio between the width of road and height the obstructing buildings increases, the variation in the orientation of the openings has increasingly less influence on illuminance.

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“…This facilitates study impact of daylight on energy consumption (Wong et al 2010, Hviid et al 2008, Ghisi and Tinker 2005; behaviour of fenestration systems (Jonsson and Roos 2010, Loutzenhiser et al 2007, Li et al 2006; as well as interaction of energy and visual comfort using advanced glazing materials (Lee and Tavil 2007).…”

Section: Whole-building Simulationmentioning

confidence: 99%

State of the art in lighting simulation for building science: a literature review

Ochoa

Aries

Hensen

2012

Journal of Building Performance Simulation

118

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, J. L. M. (2012). State of the art in lighting simulation for building science : a literature review. Journal of Building Performance Simulation, 5(4), 209-233. DOI: 10.1080209-233. DOI: 10. /19401493.2011 General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ? Take down policyIf you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. This paper examines the current state of the art in lighting simulation related to building science research. Discussion on historical developments and main modelling approaches is followed by describing lighting simulation within the design process, where it is applied beyond presentation renderings. Works are grouped using the main aspects of a program (input, modelling, and output). Lighting simulation currently focuses on representing accurately a large number of common situations encountered by building designers and researchers. Existing models apply roughly the same theoretical algorithms and calculation aids, limiting representation of certain physical phenomena. Although some models can be used for element design, they are not practical enough to develop or prototype new, untested elements. Elaborate building components require separate analysis through complex simulation aids. Few tools support the early architectural design process. Simplification applies when integrating lighting simulation to whole-building simulation. Input quality affects accuracy, while output needs careful expert interpretation.

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A study of the daylighting performance and energy use in heavily obstructed residential buildings via computer simulation techniques

Cited by 98 publications

References 9 publications

Impact of façade window design on energy, daylighting and thermal comfort in nearly zero-energy houses

Impact of façade window design on energy, daylighting and thermal comfort in nearly zero-energy houses

Análise das relações entre a geometria urbana e a orientação das aberturas na disponibilidade de iluminação natural no ambiente interno - DOI: 10.5752/P.2316-1752.2013v20n26p151

State of the art in lighting simulation for building science: a literature review

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