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2018
Journal of Building Engineering
Multi-objective optimization of energy, visual, and thermal performance for building envelopes in China's hot summer and cold winter climate zone2022 •
The building envelope design parameters including windows, apertures, shading, and materials have a significant interactive impact on the performance of a building. However, few studies simultaneously optimize these parameters to determine the trade-off solutions between energy consumption, indoor daylighting, and thermal comfort. This study presents a multi-objective optimization (MOO) framework evaluating Useful Daylight Illuminance (UDI), Energy Use In-tensity (EUI), and Thermal Discomfort time Percentage (TDP) with a wide range of parameters to investigate the interactive relationships between multiple building design and performance pa-rameters. The openable-window-area-ratio (OWR), window-wall-ratio (WWR), solar-heat-gain- coefficient (SHGC), louver depth, and wall thickness are integrated into the optimization pro-cess. Taking a building in the Hot Summer and Cold Winter Zone as an example, the results show that a large south-openable-window-area-ratio (OWRs), south-window-to-wall-ratio (WWRs), SHGC, and wall-thickness with a small north-window-wall-ratio (WWRn) and louver depth are most suitable for improving energy performance without sacrificing thermal and visual comfort. The trade-off solution represents noticeable improvements by 18%, 48.4%, and 2.5%, respec-tively, compared with the initial solution in EUI, TDP for the transition seasons, and UDI. The outcomes help the architects to obtain an optimal solution for the design, refurbishment, and renovation of building envelopes in the HSCW zone towards the construction of sustainable cities.
2017 •
With the prevalent use of large glazings, particularly in office buildings, offices receive an abundance of light and are among the largest consumers of electricity. Moreover, in an extreme hot arid climate such as in the UAE, achieving comfortable daylighting levels without increasing solar heat gain is a challenge, in which the window or fenestration design plays an essential role. This research adopts a case study of a higher education (HE) office building on the United Arab Emirates University (UAEU) campus, selected to investigate an evidence-based retrofitting solution for the west façade that can be applied in existing office buildings in the UAE in order to reduce cooling energy load as well as enhance indoor environmental quality. To achieve an evidence-based retrofitting solution, the research design built upon a comprehensive exploratory investigation that included indoor environmental quality physical monitoring and occupant satisfaction surveying. Model simulation was p...
Jurnal Teknologi
Feasibility Study of Net-Zero Energy Residential Buildings in Hot and Humid Climates: A Case Study of Iran2022 •
The use of solar energy in buildings is a good alternative to fossil fuels considering the geographical location of Iran. The present research evaluated the feasibility of net-zero energy residential buildings in southern Iran using a distinct framework. To this end, a low-energy and simulated model of a multi-family residential building as the dominant typology in Bushehr city equipped with combined (active and passive) solutions were used in Design Builder software for optimizing energy consumption. Annual electricity consumption of this simulated model was reduced by 48% using very low power density appliances and an Air Source Heat Pump (ASHP) water heater with an Energy Star label to supply hot water. Then, a grid-connected PV system with a capacity of 29 kW was used to provide the annual electricity demand. The results indicate that this system annually generates 52 MWh of electricity that not only covers the annual electricity demand but also sends 5.8 MWh of additional elect...
International Journal of Building Pathology and Adaptation
Evaluation of passive design strategies to achieve NZEB in the corporate facilities: the context of Bangladeshi subtropical monsoon climate2020 •
PurposeThis study investigates the impact and economic viability of energy-efficient building envelope and orientation for contributing net zero energy building (NZEB) and suggests optimum thermal insulation thickness, optimum wall thickness, appropriate orientation and glazing types of window in the contexts of unique Bangladeshi subtropical monsoon climate.Design/methodology/approachThe whole study was conducted through energy simulation perspective of an existing office building using building information modeling (BIM) and building energy modeling (BEM) tools which are Autodesk Revit 2017, Autodesk Green Building Studio (GBS) and eQUEST. Numerous simulation patterns were created for energy simulation considering building envelope parameters and orientations. A comprehensive data analysis of simulation results was conducted to sort out efficient passive design strategies.FindingsThe optimum thermal mass and thermal insulation thickness are 6.5 and 0.5 inches, respectively, consid...
A B S T R A C T The United Arab Emirates' (UAE) hot climate, coupled with the extreme demographic and urban growth experienced over the past four decades, has shaped a built environment where energetic quality of construction has been superseded by the quantity of construction needed to support the country's growth. This development is further aggravated by the slow development of energetic building codes, as well as the subsidized cost of electricity. The result is that the UAE consistently leads the list of countries with the highest environmental footprint, and the electricity production required to drive building cooling constitutes the brunt of the emissions balance-sheet. The work presented here reviews primarily UAE-based research that addresses the effectiveness of passive building-envelope measures that reduce energy consumption. A number of measures have been developed in response to the increasing demands of emerging energy regulations, and include measures specific to the building envelope in the planning phase or as retrofit, including radiative, convective and conductive heat transfer through walls, windows, roof, as well as energy efficient natural ventilation techniques. This review is geographically restricted to the UAE as its development challenges are directly tied to its distinct economic growth pattern and specific legislation implemented to address energy efficiency. Results confirm the importance of the following factors for energy-optimized structures: building orientation, thermal insulation (which can generate in excess of 20% energy savings in particular in the residential context), appropriate glazing type and orientation in highly glazed office buildings (up to 55% energy savings reported), excessive light levels and glare, and natural ventilation, which can reduce energy consumption from a reported high of 30% in villas to up to 79% in a high rise office building using mixed mode ventilation.
2016 •
Green Building movement has grown in Jordan for the last 10 year for environmental and financial reasons directly related to energy consumption and cost. Despite the few success stories, green design and green buildings are not yet the norm in the building sector in the country. One main concern for design engineers as well as investors and building owners is the extra cost green building will bring compared to traditional one. This assumption is wrong since a building cost should be analyzed through its life cycle, which not only include design and construction but also operation and maintenance costs as well. Since issuing the Renewable Energy and Energy Efficiency Law No. 13 of 2012, Jordan opened a new era in the RE and EE, a changing point directly related to this law is the ability to sell electricity production to electricity companies and not only being consumers. The building sector is a direct winner if designers and engineers make right decisions. An ambitious but possibl...
2014 •
Affordance of thermal comfort, as a key to sustainable habitats in emerging economies, entails a socio-economically responsible response to the imperatives of local climate, low-energy, and lifestyle changes. Since passive house thermal comfort depends on occupant's lifestyle, low-energy architecture that integrates passive techniques and lifestyles becomes avant-garde. Thermal comfort is the absence of discomfort in the occupants mind because of the body’s interaction with environment parameters: temperature, humidity, and air speed, which are enhanced by ventilation. Since socio-cultural lifestyle changes due to globalization and developments resulted in new notions of comfort and adaptation to heat producing equipments, lifestyle is recognize as essential to low-energy paradigms during operations, and heat loss or gain through appropriate ventilations and storage of heat or cold in high thermal mass envelopes could be beneficial. The case study, Bidani Eco-house in Faridabad ...
2015 •
Proceedings of the Institution of Civil Engineers - Engineering Sustainability
Low-energy design strategies for retrofitting existing residential buildings in CyprusSchool of Architecture, University of Liverpool
Feasibility of Hybrid Solar Design on the Housing Sector in the Middle EastBuilding Simulation
Analysis of the effect of passive measures on the energy consumption and zero-energy prospects of residential buildings in Pakistan2020 •
2007 •
University of Liège, Belgium
Methodology for the design of climate-responsive houses for improved thermal comfort in cold semi-arid climates2021 •
Energy and Buildings
Bottom-up building stock retrofit based on levelized cost of saved energy2020 •
2018 •
Solar Energy and Sustainable Development Journal
Review on Solar Space Heating - Cooling in Libyan Residential Buildings2018 •
Energy and Buildings
Multi-objective optimisation model: A housing block retrofit in SevilleArchitectural Science Review
Energy consumption optimization in schools sector in Jordan2015 •
Applied Energy
Will energy regulations in the Gulf States make buildings more comfortable – A scoping study of residential buildings2009 •
2018 •
MATEC Web of Conferences
Green envelope as an architectural strategy for energy efficiency in a library buildingInternational Journal of Construction Management
Impact assessment of window to wall ratio on energy consumption of an office building of subtropical monsoon climatic country Bangladesh2020 •
2019 •
Journal of Building Engineering
A review of performance of zero energy buildings and energy efficiency solutions2019 •
2018 •
Environmental Research: Infrastructure and Sustainability
Building energy performance simulation: a case study of modelling an existing residential building in Saudi Arabia2021 •
Civil Engineering and Architecture
Optimization of Thermal Behavior and Energy Efficiency of a Residential House Using Energy Retrofitting in Different Climates2020 •
2017 •