The Optimum Window-to-Wall Ratio in Office Buildings for Hot‒Humid, Hot‒Dry, and Cold Climates in Iran

Shaeri, Jalil; Habibi, Amin; Yaghoubi, M.; Chokhachian, Ata

doi:10.3390/environments6040045

Cited by 43 publications

(27 citation statements)

References 18 publications

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“…In studies investigating WWR for colder climates, the minimum energy consumption in samples was for those with a window area of 30–45%. 36 The optimal solution in the current study has suggested a reduction of the WWR from 59.5% to 33% in the western facades and a corresponding reduction from 23.5% to 17.2% in eastern façades. This is consistent with the earlier studies that recommend reduction in WWR to prevent thermal losses along with an optimum amount of day lighting.…”

Section: Discussionmentioning

confidence: 63%

Role of passive design and alternative energy in building energy optimization

Gondal

Athar

Khurram

2019

Indoor and Built Environment

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Energy consumption in buildings can be reduced by employing passive design strategies and with the use of alternative energy resources mainly solar photovoltaic and solar thermal. These measures not only help in reducing the energy bills but also help in mitigating climate change efforts. An optimal solution was obtained by the employment of these measures along with the use of building optimization techniques. Heating, ventilating and air conditioning applications are the conventional means for provision of thermal comfort and are also the highest consumers in building energy. The study establishes that certain passive measures in the design features of the building envelope, either during planning and construction or in retrofitting, can help reduce the overall energy consumption of the building without compromising the occupants’ comfort level. This study demonstrated that solar energies as well as the building parameters such as roof/wall thickness, window/wall ratio and optimum sizing of windows can reduce the energy consumption by as much as 33%. The results reflect that the selection of appropriate building parameters is very important in achieving building energy efficiency. MATLAB has been employed along with TOPSIS for optimization to approach a near zero energy building.

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Section: Discussionmentioning

confidence: 63%

Role of passive design and alternative energy in building energy optimization

Gondal

Athar

Khurram

2019

Indoor and Built Environment

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“…Yang et al [88] showed that the total energy consumption would increase when the WWR is increased, as half of the energy in a building is lost through the window [89]. Thus, it is important to determine the optimal WWR for different building facades to reduce such loss [90].…”

Section: Discussionmentioning

confidence: 99%

Energy-Efficient Window Retrofit for High-Rise Residential Buildings in Different Climatic Zones of China

Hossain

et al. 2019

Sustainability

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The building envelope plays a significant role in the energy performance of buildings and windows are a key element in transmitting heating and cooling between the indoor and outdoor environment, and hence an adequate window system is one of the most important retrofit strategies of existing buildings for energy conservation. Therefore, this study presents a method with a theoretical case study to examine the improvement of energy efficiency in a typical high-rise residential building through window retrofitting. A building energy design model in Designbuilder along with a building information modeling (BIM) model in Revit are developed, with 20 common potential glazing alternatives being analyzed to predict the potential energy savings in the same case building with identical orientation located in a variety of climate zones in China. Based on different parameters and considerations, the results demonstrated that the currently relatively expensive low-e window glazing has the best energy performance in all climate zones, but is sufficiently close to conventionally glazed windows in its energy efficiency to discourage its adoption at present, and that, instead, a single dark conventional glazed window is preferred in a hot summer/warm winter climate, double dark traditional glazing in a hot summer/cold winter climate, and a double clear conventional window in a cold climate. Based on the simulated results, an indicative suggestion was provided to select an adequate window system for residential building retrofitting in the studied climates or similar climatic regions.

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“…Design Builder is exclusive software designed to model and to evaluate the environmental design and performance of buildings. This program uses climate data provided by the EnergyPlus simulation engine to calculate the energy consumption of buildings in terms of cooling, heating, and lighting loads (Shaeri, et al, 2019). It has been used consistently in many studies in this field.…”

Section: Methodsmentioning

confidence: 99%

Feasibility Study of Concrete Louvers for High-rise Residential Buildings in Terms of Cooling Energy Requirements

Bahaadin

Raof

Abdulrahman

2021

ARO

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High-rise residential buildings are increasing worldwide, including cities in the Kurdistan Region of Iraq. Therefore, creating sustainable environments in and around these residential buildings are becoming an important problem. Improving energy efficiency in buildings has received critical attention worldwide. Countries have developed national sustainability strategies that lead to the lower energy consumption while maintaining comfort, reducing energy consumption, and minimizing harmful emissions. In this paper, an analysis of the impact of external shading devices in high-rise residential buildings on energy consumption of a 13-storey building in Sulaimani city is studied. The study is focused on fixed shading elements, explaining the influence of the design of vertical and horizontal shading devices on the total energy consumption of this type of building. The results show that both a single fixed horizontal blind with a depth of 20 cm and a triple vertical shading with the same depth are considered useless. The reduction in cooling loads by two fixed horizontal louvers almost doubled compared to a single fixed horizontal shading with 20 cm. Moreover, triple fixed horizontal louvers with 40 cm have almost the same effect on reducing cooling loads as triple fixed louvers with 60 cm. On the other hand, a triple fixed horizontal shading device with 60 cm has twice the effect on reducing annual cooling loads as a triple fixed vertical shading device with 60 cm.

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The Optimum Window-to-Wall Ratio in Office Buildings for Hot‒Humid, Hot‒Dry, and Cold Climates in Iran

Cited by 43 publications

References 18 publications

Role of passive design and alternative energy in building energy optimization

Role of passive design and alternative energy in building energy optimization

Energy-Efficient Window Retrofit for High-Rise Residential Buildings in Different Climatic Zones of China

Feasibility Study of Concrete Louvers for High-rise Residential Buildings in Terms of Cooling Energy Requirements

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