University Library External Window Sunshade Device Simulation Analysis and Optimization Design

Li, Qing; Gao, Rongfu; Bo, Jiang; Wang, Shiming

doi:10.1016/j.proeng.2017.01.281

Cited by 8 publications

(6 citation statements)

References 3 publications

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“…When the building orientations were south by west 30, south by east 15, and south by east 30, the equivalent stress of the wind load of the building's south-facing horizontal sunshade was continuously strengthened with the height of the story and the stress concentration area was at the top of the building's sunshade. Among them, when the building orientation was south by west 30, the maximum equivalent stress was distributed at the sun visor on the west side of the top floor, numbered IV-1 ; when the building orientation was south by east 15, the maximum equivalent stress was to the east, distributed at the sun visor numbered IV-4 ; when the building orientation was south by east 15, the maximum equivalent stress was distributed at the sun visor numbered IV- 6 . These stress concentration distributions should be paid attention to in structural design.…”

Section: Analysis Results Of Shading Components Under Different Worki...mentioning

confidence: 99%

“…When the building orientations were south by west 15, south by west 30, south by east 15, and south by east 30, the equivalent stresses of the wind loads of the building's south-facing horizontal sunshade were continuously strengthened with the height of the story, and the stress was concentrated; the area was located at the sun visor of zone IV on the top floor of the building. Among them, when the building orientation was south by west 15, the maximum equivalent stress was distributed at the sunshade on the west side of the top floor, numbered IV-1 ; when the building orientation was south by west 30, the maximum equivalent stress was distributed on the top floor at the sun visor on the west side numbered IV-3 ; when the building was oriented south by east 15, the maximum equivalent stress continued to shift to the east and was distributed at the sun visor numbered IV-6 ; when the building was oriented to south by east 30, the maximum equivalent stress was distributed at the sun visor numbered IV- 6 . (2) Northwest wind, where the southward horizontal sun visors changed with the orientation of the building…”

Section: Analysis Results Of Shading Components Under Different Worki...mentioning

confidence: 99%

“…Bruhwiler studied the radiative heat transfer characteristics of 26 bicycle helmets and their associated sun visors were evaluated using a thermally simulated head shape in the climate chamber to evaluate their ability to protect the wearer from the sun, which showed that all the helmets of the study resisted 50-75% of the radiant heat in the case of no visor and resisted 65-85% of radiant heat in the case of a visor [5]. With the development of computational fluid dynamics technology, Qing et al used ecological building ECOTECT simulation software analysis of the influence of a sun visor on the solar radiation in a university building, the radiation changes in the sun visor in the reading room were analyzed, and the corresponding sun visor adjustment control strategy was given [6]. Huo et al conducted on-site comparison tests in a cold area of China by comprehensively studying the effects of external shading on the thermospective optical properties of ultralow energy consumption [7].…”

Section: Introductionmentioning

confidence: 99%

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Structural Safety Analysis of Cantilever External Shading Components of Buildings under Extreme Wind Environment

Lü

Wang

et al. 2022

Processes

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The high intensity of solar radiation and long sunshine time in the Turpan area lead to the necessity of sunshade construction. Sunshade components can effectively block direct solar radiation and the secondary heating of buildings. Through the analysis of the importance and sensitivity of sunshade components, it was found that the importance of sunshade components accounts for the largest proportion of multi-parameters, and the sensitivity of sunshade components accounts for about 60% of the total. At the same time, the change in sunshade length has an important influence on the proportion of air conditioning energy consumption and space comfort when the sunshade length reached the 0.6 m–0.8 m range. The energy consumption curve of air conditioning no longer decreased and tended to be horizontal, which showed that a sunshade could effectively reduce the energy consumption of air conditioning, while the PMV comfort curve gradually increased and tended to be horizontal, indicating that a sunshade could effectively improve indoor comfort; therefore, a sunshade could reduce direct solar radiation, reduce the energy consumption of air conditioning and improve indoor thermal comfort. In view of the extremely harsh climate characteristics of Turpan, although Turpan needs to carry out shading design, as a typical wind-sensitive component, the structural safety of the visor under the action of an extreme wind environment is the primary focus of designers. The design requires wind loads as control loads. Based on the ANSYS Workbench platform, this study used the fluid–structure coupling technology to calculate and solve for the wind load stress and strain of a horizontal sunshade and a vertical sunshade in a cantilevered external sunshade of different buildings orientations. In this study, by solving for the maximum principal stress and maximum principal elastic strain under 10 working conditions, the results showed that the maximum principal stress of the sun visor under all working conditions was 0.39 MPa, which is much smaller than the tensile strength of C25 concrete. The calculated maximum principal elastic strain of the sun visor was 0.12 × 10−4, which is much smaller than the maximum strain value of concrete. Therefore, the wind load under this research condition had no great influence on the structural safety of the concrete sunshade, which proves the structural feasibility of the building sunshade member in the Turpan area, and provides a reference for the future practical engineering of cantilever members in the Turpan area.

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Section: Analysis Results Of Shading Components Under Different Worki...mentioning

confidence: 99%

Section: Analysis Results Of Shading Components Under Different Worki...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Structural Safety Analysis of Cantilever External Shading Components of Buildings under Extreme Wind Environment

Lü

Wang

et al. 2022

Processes

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“…Sci. 2021, 11,10644 is the most up to date index used to evaluate glare derived from daylight. The ca formula (Figure 9) and evaluation process of DGP (Table 5) are as follows [3,21].…”

Section: Lighting Simulationmentioning

confidence: 99%

“…The library is an important place for college students to carry out learning activities. Creating a comfortable indoor environment here is conducive to improving the overall experience and learning efficiency of students [11]. At present, this area of research, especially that focusing on design and practice, is relatively sparse worldwide [9].…”

Section: Introductionmentioning

confidence: 99%

Smart Design of Portable Indoor Shading Device for Visual Comfort—A Case Study of a College Library

Xue

Wang

2021

Applied Sciences

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With the development of architectural technology, the use of floor-to-ceiling windows has emerged widely. The ensuing problem is that more and more students and office workers are suffering from direct sunlight while working in specific areas. Based on the pain points of the working process, this study designed a portable product for improving visual comfort through field research and environment simulation. It provided a new personalized design for blocking direct sunlight from the working area using a portable and liftable sunshade curtain, allowing the users to control the height and angle of the sunshade curtain through a mobile phone application. It can also adjust itself according to environmental parameters collected by sensors, so as to block sunlight in certain areas. A simulation based on the design features and the light environment of a library is run, proving the model effective in improving these aspects. The study aimed to provide solutions for indoor visual comfort and suggestions for future indoor household designs.

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Simulation and Optimization Analysis of Summer Indoor Thermal Environment for School Buildings in Hot Summer and Cold Winter Zone

Zhang

Hou

Wei

et al. 2020

Environmental Science and Engineering

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University Library External Window Sunshade Device Simulation Analysis and Optimization Design

Cited by 8 publications

References 3 publications

Structural Safety Analysis of Cantilever External Shading Components of Buildings under Extreme Wind Environment

Structural Safety Analysis of Cantilever External Shading Components of Buildings under Extreme Wind Environment

Smart Design of Portable Indoor Shading Device for Visual Comfort—A Case Study of a College Library

Simulation and Optimization Analysis of Summer Indoor Thermal Environment for School Buildings in Hot Summer and Cold Winter Zone

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