Solar shading performance of window with constant and dynamic shading function in different climate zones

Lai, Kun; Wang, Wen; Giles, Harry

doi:10.1016/j.solener.2016.10.015

Cited by 46 publications

(14 citation statements)

References 21 publications

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“…Most of the study on OTTV in Indonesia has focused on multi-story office buildings located in Jakarta [35][36][37]. Studies on the OTTV of other building types, such as campus buildings, are still needed to broaden the knowledge about thermal transfer in Indonesia, especially in Jakarta.…”

Section: Methodsmentioning

confidence: 99%

“…It is necessary to measure the depth of the overhangs and fins and the height and width of the opening framed by the fins' orientation to obtain SC. As a result, the influence of shading devices on OTTV is apparent [33][34][35][36]. SNI s6389:2011 provides a table for obtaining R 1 (OPF or overhang projection factor) and or R 2 (SPF-side fin projection factor) from the overhang and opening height.…”

Section: Shg = [(Sc)(wwr)(sf)]mentioning

confidence: 99%

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Practical-Empirical Modeling on Envelope Design towards Sustainability in Tropical Architecture

2021

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The building envelope’s overall thermal transfer value (OTTV) is an essential aspect of creating sustainable and energy-saving architecture. The original OTTV formula makes it difficult for any user who is not an expert to calculate OTTV. Designers usually need an empirical formula to determine the design direction in the initial design stage. Instead of replacing the previous SNI (The Indonesian National Standard) 6389:2011, this paper will introduce several simple equations as empirical formulas covering solar factor (SF), effective shading coefficient (SCeff), and OTTV. Three hundred architraves units of facade models were investigated to make the formulas or equations. Regression analysis was used to make three practical formulas in this paper. The research validation consists of first and crossed-validation to determine the Root Mean Square Error (RMSE) and Average Percentage of Error (APE) between the rule of thumb and original equation of OTTV from the Indonesian standard. The results show that the RMSE is only 1.12 W/m2, while the APE is 1.05%. By these results, the empirical formulas can be implemented to be the rules of thumb in the first stage of the design process because the values of RMSE and APE are still under the design margin of thermal design in the building.

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Section: Methodsmentioning

confidence: 99%

Section: Shg = [(Sc)(wwr)(sf)]mentioning

confidence: 99%

Practical-Empirical Modeling on Envelope Design towards Sustainability in Tropical Architecture

2021

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“…where -solar radiation entering the tractor cabin, W/ 2; -colorless glass solar factor; -the ratio of the glazing area to the area of the light opening; -shading coefficient of the sun protection devices (visor) [10][11][12].…”

Section: Fig 3 the Shadow Mask Of The Horizontal Visor Of The Tractmentioning

confidence: 99%

Application of solar maps to select a rational shape of the shading device for the tractor cabin

et al. 2020

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The article is devoted to the use of solar maps to determine the period of unwanted insolation and the amount of thermal radiation that penetrates into the tractor cabin throughout the entire working day. In addition, an optimal form of a sun-protection device has been proposed, which makes it possible to reduce the magnitude of the exposure dose of thermal radiation affecting the operator. Since solar radiation makes the main contribution to the heat balance of the cabins of mobile machines (tractors, combines, etc.), the results obtained can mainly be used in assessing the working conditions of operators and in calculating and choosing systems for normalizing the microclimate (ventilation and air conditioning).

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“…At present, building energy consumption accounts for about 40.6% of the total energy consumption. With the aggravation of environmental degradation and energy shortage, building energy conservation has attracted more and more attention [ 1 ]. The application of shading facilities can control the heat entering the room and reduce the energy consumption of air-conditioning; However, it will inevitably affect the overall indoor illumination and increase lighting energy consumption [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Direct Radiation Model of Louver Shading in Office Building Shade Based on Network Optimization Method

Dasi

Jianguo²,

Han

2022

Computational Intelligence and Neuroscience

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In view of the current situation of excessively rapid growth of building energy consumption, a control strategy of external shading louvers based on comprehensive energy consumption is proposed to deeply tap the potential of building energy saving. First, the architectural design software Ecotect is used to establish a simulation model of a shading building in Zhengzhou and import it into the lighting analysis software Daysim and the energy consumption simulation software Energyplus to simulate the annual lighting energy consumption and air-conditioning at 11 kinds of blind angles (15∼165°). For heating energy consumption, take the blind angle corresponding to the minimum comprehensive energy consumption as the opening angle of the dynamic blinds and analyze the comprehensive energy consumption for the whole year under dynamic sunshading. The results show that, compared with the conventional control strategy, the optimized control strategy based on comprehensive energy consumption can greatly improve the building’s energy-saving rate.

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Solar shading performance of window with constant and dynamic shading function in different climate zones

Cited by 46 publications

References 21 publications

Practical-Empirical Modeling on Envelope Design towards Sustainability in Tropical Architecture

Practical-Empirical Modeling on Envelope Design towards Sustainability in Tropical Architecture

Application of solar maps to select a rational shape of the shading device for the tractor cabin

Direct Radiation Model of Louver Shading in Office Building Shade Based on Network Optimization Method

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