Development of a comprehensive method to analyse glazing systems with Parallel Slat Transparent Insulation material (PS-TIM)

Sun, Yanyi; Liang, Runqi; Wu, Yupeng; Wilson, Robin; Rutherford, Peter

doi:10.1016/j.apenergy.2017.08.041

Cited by 36 publications

(19 citation statements)

References 47 publications

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“…Window systems, which account for up to 60% of the total energy consumption of a building (Jelle et al 2012;Peng et al 2013), significantly affect the buildings' performance and occupant comfort through determining the penetration of solar energy and daylight, influencing the heating and cooling energy consumption and controlling the view into and out of a building (Huang et al 2014;Mangkuto et al 2016;Sun et al 2017;Wang et al 2016). Many efforts have been made to improve the building performance of window systems, and these are mainly in two directions: (1) for increased thermal resistance, such as using inert gases as cavity fill, multiple glass panes, low emissivity coatings, vacuum glazing and aerogel glazing; and (2) controlling solar radiation and daylight entering the room by introducing tinted coatings, reflective coatings, shading devices and switchable glazing (e.g.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Mg-Y coated gasochromic smart windows for building applications

et al. 2018

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In the purpose of improving indoor comfort and achieving building energy conservation, significant efforts have been made to improve the performance of window systems. Smart windows have been increasingly considered as an efficient technology with adjustable control of their thermal and/or optical properties in response to instant changes of the environment. This paper explores the potential of using a durable Mg-Y based switchable mirror gasochromic (GC) material for building window applications. The selected Mg-Y based GC window provides a degree of flexibility to reflect the undesirable incident solar radiation rather than the other types of GC windows, which absorb the solar heat that might eventually go into the indoor space through convective, conductive and radiative heat transfer. Building simulations were carried out for a typical office with Mg-Y GC window applied using EnergyPlus. The characterization of the selected gasochromic smart window and its impact on building performance was comprehensively studied under 5 diverse climates in China. In addition, various control strategies in response to different environmental conditions or indoor comfort criteria are also considered. The results indicated that Mg-Y based films with excessively low transmittance at the reflective state are not beneficial from the perspective of building energy conservation, while potentially developed Mg-Y windows with relative higher transmittance and larger transmittance modulation can yield energy conservation of up to 27% when compared with standard double glazing. Overall, the work presented in this paper may be seen as offering potential advice and guidance on further development of switchable mirror GC material that seek to be applied into building windows for amplifying improvements in energy efficiency and occupant comfort.

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Section: Introductionmentioning

confidence: 99%

Investigation of Mg-Y coated gasochromic smart windows for building applications

et al. 2018

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“…Nevertheless, it should be noted that the concrete thermal mass that the authors used did affect the level of natural illumination through the DSF. Without losing the daylight benefits of DSF, Sun et al [20,21] investigated a DSF integrated with parallel slat…”

Section: Background and Related Studiesmentioning

confidence: 99%

Phase change material blind system for double skin façade integration: System development and thermal performance evaluation

Darkwa

Kokogiannakis

et al. 2019

Applied Energy

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“…Innovative 3D printing techniques applied to the middle layer of triplelayer ETFE foil construction were predicted to achieve even higher energy savings for cooling load of 69% to 87%, compared to conventional ETFE foil cushions [39]. While these techniques are mainly passive, the technological trend in the development of building envelopes is moving towards adaptive solutions which respond dynamically to the changing weather conditions, effectively control daylighting and reduce energy demands for cooling [40][41][42][43][44][45][46][47]. The most widely reported strategy for the active control of ETFE foil constructions is the switchable multilayer shading mechanism [27,[48][49][50][51].…”

Section: Introductionmentioning

confidence: 99%

Optical aspects and energy performance of switchable ethylene-tetrafluoroethylene (ETFE) foil cushions

et al. 2018

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A pneumatic multilayer foil construction with a kinetic shading mechanism has the potential to be an effective response to dynamic climatic factors, such as solar radiation, and therefore moderate the energy consumption of buildings. A parametric study was carried out on a switchable ethylene-tetrafluoroethylene (ETFE) foil cushion with the purpose of investigating the optical performance of an adaptive building envelope and its impact on building energy performance regarding heating, cooling and lighting. Ray-tracing techniques were used to investigate the effects of surface curvature, frit layout and frit properties, on the optical performance of the cushion in open and closed mode. A range of incidence angles for solar radiation were simulated. The results of the simulation showed an angle dependent optical behaviour for both modes. The influence of the dynamic shading mechanism on building energy performance was further evaluated by integrating the optical data obtained for the ETFE foil cushions in a comprehensive energy simulation of a generic atrium building using EnergyPlus. Results suggested that switchable ETFE foil cushions have a higher potential to reduce cooling and heating loads in different climatic regions, compared to conventional glazing solutions (i.e. uncoated double-glazing and reflective double-glazing), while providing good conditions of natural daylighting. Annual energy savings of up to 44.9% were predicted for the switchable ETFE foil cushion in comparison to reflective double glazing. As such, this study provides additional insight into the optical behaviour of multilayer foil constructions and the factors of design and environment that potentially have a major impact on buildings energy performance.

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Development of a comprehensive method to analyse glazing systems with Parallel Slat Transparent Insulation material (PS-TIM)

Cited by 36 publications

References 47 publications

Investigation of Mg-Y coated gasochromic smart windows for building applications

Investigation of Mg-Y coated gasochromic smart windows for building applications

Phase change material blind system for double skin façade integration: System development and thermal performance evaluation

Optical aspects and energy performance of switchable ethylene-tetrafluoroethylene (ETFE) foil cushions

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