Considerations on design optimization criteria for windows providing low energy consumption and high visual comfort

Ochoa, Carlos Ernesto; Aries, Mbc Myriam; Loenen, E.J. van; Hensen, Jlm Jan

doi:10.1016/j.apenergy.2012.02.042

Cited by 288 publications

(154 citation statements)

References 31 publications

(38 reference statements)

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“…Figure 7 shows a clear preference for low WWR values during winter months. This result implies, in accordance with previous research [46,51,61], that under temperate winter conditions, passive solar gains and daylight utilization are insufficient to compensate for conduction losses. Due to the lower thermal resistance of fenestration compared to opaque wall parts, the given optimization formulation consistently favors low window to wall ratios in winter.…”

Section: Optimum Properties Of Seasonal Cabssupporting

confidence: 80%

“…Particularly in supporting high-performance building design, the application of multi-objective optimization (MOO) algorithms is useful [49][50][51], as it allows for visualization of trade-offs between two or more conflicting design objectives [52,53]. The main advantage of this approach is that best trade-off solutions are represented as a set of equally optimum solutions, the Pareto front, from which a single design can be selected a posteriori, by taking the decision-maker's priorities into account.…”

Section: Optimization Strategymentioning

confidence: 99%

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Framework for assessing the performance potential of seasonally adaptable facades using multi-objective optimization

Kasinalis

Loonen

Cóstola

et al. 2014

Energy and Buildings

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Section: Optimum Properties Of Seasonal Cabssupporting

confidence: 80%

Section: Optimization Strategymentioning

confidence: 99%

Framework for assessing the performance potential of seasonally adaptable facades using multi-objective optimization

Kasinalis

Loonen

Cóstola

et al. 2014

Energy and Buildings

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“…While for office buildings, there are several examples of studies paying attention to whether the window options investigated are comparable in terms of daylighting and criteria for visual or thermal comfort [19][20][21][22], such studies are few for residential buildings. Seen in the light of the tendency that large and clear southoriented windows in very well-insulated dwellings are becoming less important for reducing space heating demand and more critical for thermal comfort, we believe that such investigation is essential also in residential buildings for achieving a balanced overview of future options.…”

Section: Introductionmentioning

confidence: 99%

Roadmap for improving roof and façade windows in nearly zero-energy houses in Europe

Skarning

Hviid

Svendsen

2016

Energy and Buildings

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Windows are central for the development of liveable nearly zero-energy homes and require careful consideration. Various studies have indicated that the effect of windows on energy consumption may change significantly with improved building insulation levels. Current guidelines on windows may therefore not apply in very well-insulated buildings, and more up-to-date information is needed about window solutions that are appropriate for the new conditions. This study maps the effect of multiple combinations of window size and basic glazing and frame properties on energy, daylighting and thermal comfort in nearly zero-energy houses located in the European cities Rome and Copenhagen. The aim was to identify options that can support the easy and robust design of future homes with typical use of roof and façade windows. Hourly daylight levels were calculated in DAYSIM, while space heating demand and operative temperatures were calculated in EnergyPlus. The results support previous findings on the limited ability of nearly zero-energy buildings to utilise solar gains. It was found that U-values are becoming increasingly important for the energy performance of windows. The paper sketches the increased flexibility and related possibilities that may appear with improved roof window frame constructions and glazing U-values far lower than currently standard levels.

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“…In buildings, where day-lighting and solar gains are advantageous, large window sizes are a desired feature to increase day-lighting and solar gains [1]. In order to increase the window size, without increasing the space-heating load, low heat loss glazing is required of which vacuum glazing is one option [2].…”

Section: Introductionmentioning

confidence: 99%

A new low-temperature hermetic composite edge seal for the fabrication of triple vacuum glazing

Memon

Farukh

Eames

et al. 2015

Vacuum

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Please cite this article as: Memon S, Farukh F, Eames PC, Silberschmidt VV, A new low-temperature hermetic composite edge seal for the fabrication of triple vacuum glazing, Vaccum (2015Vaccum ( ), doi: 10.1016Vaccum ( / j.vacuum.2015 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 2 AbstractHigh performance low-cost vacuum glazing is a key development in the move to more energy-efficient buildings. This study reports the results of experimental and theoretical investigations into the development of a new low-temperature (less than 200˚C) composite edge seal. A prototype triple vacuum glazing of dimensions 300mmx300mm was fabricated with a measured vacuum pressure of 4.8x10 -2 Pa achieved. A three-dimensional finite-element model for this prototype triple vacuum glazing with the composite edge seal was also developed. Centre-of-pane and total thermal transmittance values for this small prototype of the triple vacuum glazing were predicted to be 0.33 Wm -2 K -1 and 1.05 Wm -2 K -1 , respectively. It was predicted using the developed model that the thermal performance could be improved by reducing the width of the composite edge seal and by the use of soft low-emissivity coatings on the glass surfaces. Detailed three-dimensional isothermal contour plots of the modelled triple vacuum glazing are presented.

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Considerations on design optimization criteria for windows providing low energy consumption and high visual comfort

Cited by 288 publications

References 31 publications

Framework for assessing the performance potential of seasonally adaptable facades using multi-objective optimization

Framework for assessing the performance potential of seasonally adaptable facades using multi-objective optimization

Roadmap for improving roof and façade windows in nearly zero-energy houses in Europe

A new low-temperature hermetic composite edge seal for the fabrication of triple vacuum glazing

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