Comparative advantage of an exterior shading device in thermal performance for residential buildings

Kim, Gon; Lim, Hwan Sub; Lim, Tae Sub; Schaefer, Laura; Kim, Jeong Tai

doi:10.1016/j.enbuild.2011.10.040

Cited by 196 publications

(87 citation statements)

References 15 publications

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“…Kim et al conducted an experimental configuration and energy analysis simulation of several internal and external shading devices for apartment houses located in South Korea. They showed that experimental shading devices located outside provide a very good percentage of cooling energy saving when compared to internal devices [6]. A lighting and shading control strategy has been suggested by Yun et al by analyzing several different parameterizations of an office building with respect to visual comfort and building energy demand [7].…”

Section: Shading Devicesmentioning

confidence: 99%

A Pareto-based multi-objective optimization algorithm to design energy-efficient shading devices

2016

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h i g h l i g h t sWe present a multi-objective optimization algorithm for shading design. We combine Harmony search and Pareto-based procedures. Thermal and daylighting performances of external shading were considered. We applied the optimization process to a residential social housing in Madrid. t r a c tIn this paper we address the problem of designing new energy-efficient static daylight devices that will surround the external windows of a residential building in Madrid. Shading devices can in fact largely influence solar gains in a building and improve thermal and lighting comforts by selectively intercepting the solar radiation and by reducing the undesirable glare. A proper shading device can therefore significantly increase the thermal performance of a building by reducing its energy demand in different climate conditions. In order to identify the set of optimal shading devices that allow a low energy consumption of the dwelling while maintaining high levels of thermal and lighting comfort for the inhabitants we derive a multi-objective optimization methodology based on Harmony Search and Pareto front approaches. The results show that the multi-objective approach here proposed is an effective procedure in designing energy efficient shading devices when a large set of conflicting objectives characterizes the performance of the proposed solutions.

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Section: Shading Devicesmentioning

confidence: 99%

A Pareto-based multi-objective optimization algorithm to design energy-efficient shading devices

2016

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“…Kim et al [23] have verified the advantage of the external device in South Korea, various types of shading devices have been analyzed and compared with the experimental configuration proposed in terms of energy savings for heating and cooling by using simulations.…”

Section: Introductionmentioning

confidence: 99%

“…External shading systems are the most effective means of reducing cooling demands as they prevent solar radiation for heating the building [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Modeling and Experimental Validation of a Low-Cost Radiation Sensor Based on the Photovoltaic Effect for Building Applications

et al. 2016

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Abstract:The energy consumed to cool buildings is very elevated and solar gains represent a high percentage of these cooling loads. To minimize the thermal load it is necessary to control external shading systems. This control requires continuous measurement of solar radiation in different locations of the building. However, for such applications the use of conventional irradiance sensors increases the cost and reduces the profitability of the installation. This paper is focused on the development, modeling, and experimental validation of low cost irradiation sensors based on photovoltaic effect in order to reduce the costs of dynamic external shading devices and to improve the profitability of the system. With this proposal, firstly, small commercial photovoltaic cells have been adapted for use as an irradiation measurement device. Subsequently, quasi-stationary and continuous experimental measurements of these silicon cells, facing south and installed horizontally, have been carried out in Jaén (Spain) in 2009 and 2010. Finally, a nonlinear multiparameter function has been developed to evaluate the irradiance using the electric current generated by the cell, cell temperature, ambient temperature, and absolute humidity. A favorable agreement between the model predictions and experimental data has been observed with a coefficient of determination around 0.996 for all cells.

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“…Kim et al [15] compare, by means of energy simulation, three different types of external shading devices (a solid overhang, a horizontal louvered light shelf and an experimental tilted louvered overhang) with an internal venetian blind in terms of energy savings for heating and cooling. The investigation shows that, regardless of slat angles, the internal venetian blind is much less effective in reducing cooling loads than external devices and that, considering both summer and winter performance, the experimental tilted louvered overhang provides the most effective energy reduction.…”

Section: Introductionmentioning

confidence: 99%

The Energy Upgrading of Existing Buildings: Window and Shading Device Typologies for Energy Efficiency Refurbishment

2014

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Abstract:Residential buildings built after the Second World War have high energy consumption and inadequate thermal comfort, especially in summer conditions, largely attributable to the high transmittance of windows and lack of effective shading devices. Performance improvement of these components is essential for energy upgrading of existing buildings. This paper shows the results of the research, which aims to evaluate effects on energy consumption and environmental comfort of combined solutions of windows and shading devices applied to a case study representing a typical post World War II Italian building. In this paper, the main typologies of solar control systems are described and evaluated on the basis of a case study in different climatic locations (Berlin, Milan, Florence and Athens). Thermal behavior has been assessed through the EnergyPlus dynamic calculation code, by using appropriate performance indicators for energy and thermal sensation. Starting from performance evaluation of the existing building, different strategies have been assessed: replacement of existing windows with high-energy performance ones and introduction of shading devices and solar control glasses. Finally, a global comparative analysis has been carried out based on energy, acoustic and lighting performances, technical feasibility and management problems. Results of the different solar shading devices assessment are reported in the form of a data sheet.

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Comparative advantage of an exterior shading device in thermal performance for residential buildings

Cited by 196 publications

References 15 publications

A Pareto-based multi-objective optimization algorithm to design energy-efficient shading devices

A Pareto-based multi-objective optimization algorithm to design energy-efficient shading devices

Modeling and Experimental Validation of a Low-Cost Radiation Sensor Based on the Photovoltaic Effect for Building Applications

The Energy Upgrading of Existing Buildings: Window and Shading Device Typologies for Energy Efficiency Refurbishment

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