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The construction industry has great importance for the economy, especially in developing countries. While having such great importance at macro level, there are many uncertainties for the industry to overcome. Productivity is one of the most important uncertainties in the industry. Most of the companies in the industry do not have any performance measure or efficient criteria for the technical personnel, and the work outcomes of the technical personnel are not quantifiable. This study aims to identify and rank the multi-causal factors affecting the productivity of technical personnel in the construction industry. For this purpose, a detailed questionnaire survey was taken among 400 professionals in the construction industry. Kaiser–Meyer–Olkin measure of sampling adequacy, Barlett’s test of sphericity which makes Cronbach’s alpha, and reliability tests were conducted on the results of the questionnaire survey. The relative importance index was used for ranking the importance level of the factors. The top nine factors affecting technical personnel’s productivity are listed as Management, External and Owner Related, Motivational, Financial, Working Condition, Welfare and Comfort, Lacking Resources, Personal and Workload factors in the study, and 47% of these factors affecting technical personnel’s’ productivity are expressed by management factors. The most important factor groups after the management factors are working conditions, human factors and external factors, respectively. It is thought that the results of this research will shed light on for further research that focus on maximizing the productivity of technical personnel in the construction industry.
Gurkan Emre Gurcanli; Senem Bilir Mahcicek; Evren Serpel; Shady Attia. Factors Affecting Productivity of Technical Personnel in Turkish Construction Industry: A Field Study. Arabian Journal for Science and Engineering 2021, 1 -15.
AMA StyleGurkan Emre Gurcanli, Senem Bilir Mahcicek, Evren Serpel, Shady Attia. Factors Affecting Productivity of Technical Personnel in Turkish Construction Industry: A Field Study. Arabian Journal for Science and Engineering. 2021; ():1-15.
Chicago/Turabian StyleGurkan Emre Gurcanli; Senem Bilir Mahcicek; Evren Serpel; Shady Attia. 2021. "Factors Affecting Productivity of Technical Personnel in Turkish Construction Industry: A Field Study." Arabian Journal for Science and Engineering , no. : 1-15.
Retrofitting heritage buildings for energy efficiency is not always easy where cultural values are highly concerned, which requires an integrated approach. This paper aims to assess the potential of applying passive retrofitting scenarios to enhance indoor thermal comfort of heritage buildings in North Africa, as a hot climate, a little attention has been paid to retrofit built heritage in that climate. A mixed-mode ventilation residential building in Cairo, Egypt, was selected as a case study. The study combines field measurements and observations with energy simulations. A simulation model was created and calibrated on the basis of monitored data in the reference building, and the thermal comfort range was evaluated. Sets of passive retrofitting scenarios were proposed. The results (based on the ASHRAE-55-2020 adaptive comfort model at 90% acceptability limits) showed that the annual thermal comfort in the reference building is very low, i.e., 31.4%. The application of hybrid passive retrofitting scenarios significantly impacts indoor thermal comfort in the reference building, where annual comfort hours of up to 66% can be achieved. The originality of this work lies in identifying the most effective energy measures to improve indoor thermal comfort that are optimal from a conservation point of view. The findings contribute to set a comprehensive retrofitting tool that avoids potential risks for the conservation of residential heritage buildings in hot climates.
Hanan Ibrahim; Ahmed Khan; Waqas Mahar; Shady Attia; Yehya Serag. Assessment of Passive Retrofitting Scenarios in Heritage Residential Buildings in Hot, Dry Climates. Energies 2021, 14, 3359 .
AMA StyleHanan Ibrahim, Ahmed Khan, Waqas Mahar, Shady Attia, Yehya Serag. Assessment of Passive Retrofitting Scenarios in Heritage Residential Buildings in Hot, Dry Climates. Energies. 2021; 14 (11):3359.
Chicago/Turabian StyleHanan Ibrahim; Ahmed Khan; Waqas Mahar; Shady Attia; Yehya Serag. 2021. "Assessment of Passive Retrofitting Scenarios in Heritage Residential Buildings in Hot, Dry Climates." Energies 14, no. 11: 3359.
In the context of the European carbon neutrality targets, building benchmarks are a key issue for the renovation of existing buildings. Although there are various benchmark methods for energy efficiency characterization, their application to the residential sector is still limited. This paper developed two building simulation models for post-world war II houses in Belgium based on data from post-occupancy measurements and field survey campaigns. The study reports the energy characteristics and occupancy profiled of detached single-family houses. An analysis of energy consumption (electricity and natural gas) and a walkthrough survey were conducted between 2016 and 2019. The benchmark model’s validity has been further checked against public statistics and verified through model calibration and monthly energy bill comparison. Two reference models representing 633.702 post-WWII single-family houses in Belgium were created and validated. The first archetype has an average energy use intensity of 166 kWh/m2/year and represents detached single-family houses built between 1945 and 1969. The second archetype has an average energy use intensity of 155 kWh/m2/year and represents detached single-family houses built between 1970 and 1990. The paper provides a timely opportunity to evaluate the real performance of post-world war II most common archetypes concerning design assumptions and how building professionals can turn the energy performance gap challenge to their advantage. The findings on energy needs and intensity are useful for creating future renovation scenarios for similar archetypes in Western European countries.
Shady Attia; Ahmed Mustafa; Nicolas Giry; Mathieu Popineau; Mathilde Cuchet; Numan Gulirmak. Developing two benchmark models for post-world war II residential buildings. Energy and Buildings 2021, 244, 111052 .
AMA StyleShady Attia, Ahmed Mustafa, Nicolas Giry, Mathieu Popineau, Mathilde Cuchet, Numan Gulirmak. Developing two benchmark models for post-world war II residential buildings. Energy and Buildings. 2021; 244 ():111052.
Chicago/Turabian StyleShady Attia; Ahmed Mustafa; Nicolas Giry; Mathieu Popineau; Mathilde Cuchet; Numan Gulirmak. 2021. "Developing two benchmark models for post-world war II residential buildings." Energy and Buildings 244, no. : 111052.
Between the ages of 6 and 18, children spend between 30 and 42 h a week at school, mostly indoors, where indoor environmental quality is usually deficient and does not favor learning. The difficulty of delivering indoor air quality (IAQ) in learning facilities is related to high occupancy rates and low interaction levels with windows. In non-industrialized countries, as in the cases presented, most classrooms have no mechanical ventilation, due to energy poverty and lack of normative requirements. This fact heavily impacts the indoor air quality and students’ learning outcomes. The aim of the paper is to identify the factors that determine acceptable CO2 concentrations. Therefore, it studies air quality in free-running and naturally ventilated primary schools in Chile, aiming to identify the impact of contextual, occupant, and building design factors, using CO2 concentration as a proxy for IAQ. The monitoring of CO2, temperature, and humidity revealed that indoor air CO2 concentration is above 1400 ppm most of the time, with peaks of 5000 ppm during the day, especially in winter. The statistical analysis indicates that CO2 is dependent on climate, seasonality, and indoor temperature, while it is independent of outside temperature in heated classrooms. The odds of having acceptable concentrations of CO2 are bigger when indoor temperatures are high, and there is a need to ventilate for cooling.
Muriel Diaz; Mario Cools; Maureen Trebilcock; Beatriz Piderit-Moreno; Shady Attia. Effects of Climatic Conditions, Season and Environmental Factors on CO2 Concentrations in Naturally Ventilated Primary Schools in Chile. Sustainability 2021, 13, 4139 .
AMA StyleMuriel Diaz, Mario Cools, Maureen Trebilcock, Beatriz Piderit-Moreno, Shady Attia. Effects of Climatic Conditions, Season and Environmental Factors on CO2 Concentrations in Naturally Ventilated Primary Schools in Chile. Sustainability. 2021; 13 (8):4139.
Chicago/Turabian StyleMuriel Diaz; Mario Cools; Maureen Trebilcock; Beatriz Piderit-Moreno; Shady Attia. 2021. "Effects of Climatic Conditions, Season and Environmental Factors on CO2 Concentrations in Naturally Ventilated Primary Schools in Chile." Sustainability 13, no. 8: 4139.
Oases settlements are common entities of human agglomerations throughout desert regions. Oases settlements face several environmental challenges such as climate change, which can render them insufferably hot and unlivable within decades. Therefore, this study aims to assess the outdoor thermal comfort variation within three different oases urban fabrics of Tolga Oases Complex in Algeria. The overarching aim is to quantify thermal comfort and guide landscape, and urban designers improve outdoor thermal comfort. The methodology relies on microclimatic measurements and weather datasets (TMY2, TMY3, TMYx), combining observations and numerical simulations. A total of 648 Physiological Equivalent Temperature (PET) values were calculated in three different urban fabrics in Tolga Oases Complex, Algeria. Between 2003 and 2017, a remarkable microclimatic change was found, causing a high and accelerated heat stress level of 76%. The study results inform architects, urban planners and climatologists about climate change effects and urban sprawl impact on the oases lands. Moreover, urban strategies should seek mitigation and adaptation benefiting from the existing green infrastructure of palm groves.
Mohamed Matallah; Djamel Alkama; Jacques Teller; Atef Ahriz; Shady Attia. Quantification of the Outdoor Thermal Comfort within Different Oases Urban Fabrics. Sustainability 2021, 13, 3051 .
AMA StyleMohamed Matallah, Djamel Alkama, Jacques Teller, Atef Ahriz, Shady Attia. Quantification of the Outdoor Thermal Comfort within Different Oases Urban Fabrics. Sustainability. 2021; 13 (6):3051.
Chicago/Turabian StyleMohamed Matallah; Djamel Alkama; Jacques Teller; Atef Ahriz; Shady Attia. 2021. "Quantification of the Outdoor Thermal Comfort within Different Oases Urban Fabrics." Sustainability 13, no. 6: 3051.
The concept of climate resilience has gained extensive international attention during the last few years and is now seen as the future target for building cooling design. However, before being fully implemented in building design, the concept requires a clear and consistent definition and a commonly agreed framework of key concepts. The most critical issues that should be given special attention before developing a new definition for resilient cooling of buildings are (1) the disruptions or the associated climatic shocks to protect against, (2) the scale of the built domain, (3) the timeline of resilience, (4) the events of disruption, (5) the stages of resilience, (6) the indoor climate limits and critical comfort conditions, and (7) the influencing factors of resilient cooling of buildings. This paper focuses on a scoping review of the most of the existing resilience definitions and the various approaches, found in 90 documents, towards possible resilient buildings. In conclusion, the paper suggests a definition and a set of criteria —vulnerability, resistance, robustness, and recoverability— that can help to develop intrinsic performance-driven indicators and functions of passive and active cooling solutions in buildings against two disruptors of indoor thermal environmental quality—heat waves and power outages.
Shady Attia; Ronnen Levinson; Eileen Ndongo; Peter Holzer; Ongun Berk Kazanci; Shabnam Homaei; Chen Zhang; Bjarne W. Olesen; Dahai Qi; Mohamed Hamdy; Per Heiselberg. Resilient cooling of buildings to protect against heat waves and power outages: Key concepts and definition. Energy and Buildings 2021, 239, 110869 .
AMA StyleShady Attia, Ronnen Levinson, Eileen Ndongo, Peter Holzer, Ongun Berk Kazanci, Shabnam Homaei, Chen Zhang, Bjarne W. Olesen, Dahai Qi, Mohamed Hamdy, Per Heiselberg. Resilient cooling of buildings to protect against heat waves and power outages: Key concepts and definition. Energy and Buildings. 2021; 239 ():110869.
Chicago/Turabian StyleShady Attia; Ronnen Levinson; Eileen Ndongo; Peter Holzer; Ongun Berk Kazanci; Shabnam Homaei; Chen Zhang; Bjarne W. Olesen; Dahai Qi; Mohamed Hamdy; Per Heiselberg. 2021. "Resilient cooling of buildings to protect against heat waves and power outages: Key concepts and definition." Energy and Buildings 239, no. : 110869.
The issue of energy retrofitting of existing building stock occupies an increasingly prominent place in energy transition strategies in Europe. Adopting models representing the building stock and accounting for occupancy influence on final housing energy use must be developed to advise new policies. In this respect, this study aims to characterize the Walloon residential building stock and to analyze the existing correlations between the stock’s technical data and its occupants’ socioeconomic data. This study uses existing databases on buildings and inhabitants in Wallonia. Several statistical analyses make it possible to highlight the preponderant criteria and existing correlations between these different criteria. This study affirms the importance of accounting for certain socioeconomic categories, such as low-income groups, in a global strategic reflection on energy renovation. Multiple linear regression shows us that each percent increase in the category of households that declare between 10,000–20.000 EUR of income per year corresponds to an increase of 7.22 kWh/m2.y in the average energy efficiency of the built stock. The results highlight the importance of focusing on renovation strategies for particular types of buildings, such as semi-detached houses, which combine unfavorable technical and socioeconomic factors. Thus, the results confirm the interest of a mixed model approach to adapt to effective renovation policy strategies.
Guirec Ruellan; Mario Cools; Shady Attia. Analysis of the Determining Factors for the Renovation of the Walloon Residential Building Stock. Sustainability 2021, 13, 2221 .
AMA StyleGuirec Ruellan, Mario Cools, Shady Attia. Analysis of the Determining Factors for the Renovation of the Walloon Residential Building Stock. Sustainability. 2021; 13 (4):2221.
Chicago/Turabian StyleGuirec Ruellan; Mario Cools; Shady Attia. 2021. "Analysis of the Determining Factors for the Renovation of the Walloon Residential Building Stock." Sustainability 13, no. 4: 2221.
This study aims to develop an integrated classification methodology for retrofitting that preserves both energy use and cultural value aspects in hot climates, especially, in North Africa, as a hot zone, which lacks retrofitting initiatives of built heritage. Despite the number of existing methods of classification for energy purposes, little attention has been paid to integrate the perceptions of cultural values in those methods. The proposed methodology classifies heritage building stocks based on building physical characteristics, as well as heritage significance levels, and then later integrates the outcomes into a matrix to propose sustainable retrofitting scenarios based on three dimensions, i.e., heritage value locations, types, and heritage significance level. For validation, the methodology was applied to the heritage residential building stock along with a microscale analysis on a building in Khedivial Cairo, Egypt. The findings include extracting twelve building classes, providing a reference building for each class, and a detailed catalogue of the extracted reference buildings that includes retrofitting scenarios for creating energy models. The originality of this work lies in integrating cultural values in a building classification methodology and providing a list of sustainable retrofitting scenarios for reference buildings. The findings contribute to fill the gap in existing building classifications, more specifically in hot climates.
Hanan Ibrahim; Ahmed Khan; Shady Attia; Yehya Serag. Classification of Heritage Residential Building Stock and Defining Sustainable Retrofitting Scenarios in Khedivial Cairo. Sustainability 2021, 13, 880 .
AMA StyleHanan Ibrahim, Ahmed Khan, Shady Attia, Yehya Serag. Classification of Heritage Residential Building Stock and Defining Sustainable Retrofitting Scenarios in Khedivial Cairo. Sustainability. 2021; 13 (2):880.
Chicago/Turabian StyleHanan Ibrahim; Ahmed Khan; Shady Attia; Yehya Serag. 2021. "Classification of Heritage Residential Building Stock and Defining Sustainable Retrofitting Scenarios in Khedivial Cairo." Sustainability 13, no. 2: 880.
Overheating in residential building is a challenging problem that causes thermal discomfort, productivity reduction, and health problems. This paper aims to assess the climate change impact on thermal comfort in a Belgian reference case. The case study represents a nearly zero energy building that operates without active cooling during summer. The study quantifies the impact of climate change on overheating risks using three representative concentration pathway (RCP) trajectories for greenhouse gas concentration adopted by the Intergovernmental Panel on Climate Change (IPCC). Building performance analysis is carried out using a multizone dynamic simulation program EnergyPlus. The results show that bioclimatic and thermal adaptation strategies, including adaptive thermal comfort models, cannot suppress the effect of global warming. By 2050, zero energy buildings will be vulnerable to overheating.
Shady Attia; Camille Gobin. Climate Change Effects on Belgian Households: A Case Study of a Nearly Zero Energy Building. Energies 2020, 13, 5357 .
AMA StyleShady Attia, Camille Gobin. Climate Change Effects on Belgian Households: A Case Study of a Nearly Zero Energy Building. Energies. 2020; 13 (20):5357.
Chicago/Turabian StyleShady Attia; Camille Gobin. 2020. "Climate Change Effects on Belgian Households: A Case Study of a Nearly Zero Energy Building." Energies 13, no. 20: 5357.
Climate responsive design can amplify the positive environmental effects necessary for human habitation and constructively engage and reduce the energy use of existing buildings. This paper aims to assess the role of the thermal adaptation design strategy on thermal comfort perception, occupant behavior, and building energy use in twelve high-performance Belgian households. Thermal adaptation involves thermal zoning and behavioral adaptation to achieve thermal comfort and reduce energy use in homes. Based on quantitative and qualitative fieldwork and in-depth interviews conducted in Brussels, the paper provides insights on the impact of using mechanical systems in twelve newly renovated nearly- and net-zero energy households. The article calls for embracing thermal adaptation as a crucial design principle in future energy efficiency standards and codes. Results confirm the rebound effect in nearly zero energy buildings and the limitation of the current building energy efficiency standards. The paper offers a fresh perspective to the field of building energy efficiency that will appeal to researchers and architects, as well as policymakers.
Shady Attia. Spatial and Behavioral Thermal Adaptation in Net Zero Energy Buildings: An Exploratory Investigation. Sustainability 2020, 12, 7961 .
AMA StyleShady Attia. Spatial and Behavioral Thermal Adaptation in Net Zero Energy Buildings: An Exploratory Investigation. Sustainability. 2020; 12 (19):7961.
Chicago/Turabian StyleShady Attia. 2020. "Spatial and Behavioral Thermal Adaptation in Net Zero Energy Buildings: An Exploratory Investigation." Sustainability 12, no. 19: 7961.
The shortage of student housing in Western Europe and the high demand for student population indicate the potential of the impetus for more sustainable and better quality accommodation. The residential building sector is one of the significant contributors to greenhouse gas (GHG) emissions, yet appropriate criteria for the assessment of student housing do not exist. Decisions to evaluate student housing are still primarily based on rental cost or anecdotal evidence when assessing their performance and living quality. Multi-objective criteria are needed to assist with the selection of sustainable student housing for higher education institutions students. Therefore, the objective of this paper is to identify key performance indicators for assessing sustainable student housing, and to develop a simple tool for the selection and measurement of the sustainability of student housing. The overarching aim is to improve the quality and sustainability of student accommodation in Europe. The methodology is based on a mixed-method research approach comprising a literature review on rating systems, a survey questionnaire with 610 student respondents, and a ranking analysis acquired from the severity index calculation. A total of 44 key performance indicators were identified, and a simple interactive tool was developed and tested. The proposed tool is demonstrated using a case study with two students as the decision-makers. The tool provides a novel approach to assess student housing. This creates an opportunity for a pan European environmental policy and an increase in market competitiveness to attract European and overseas students.
Shady Attia; Pierre Alphonsine; Mohamed Amer; Guirec Ruellan. Towards a European rating system for sustainable student housing: Key performance indicators (KPIs) and a multi-criteria assessment approach. Environmental and Sustainability Indicators 2020, 7, 100052 .
AMA StyleShady Attia, Pierre Alphonsine, Mohamed Amer, Guirec Ruellan. Towards a European rating system for sustainable student housing: Key performance indicators (KPIs) and a multi-criteria assessment approach. Environmental and Sustainability Indicators. 2020; 7 ():100052.
Chicago/Turabian StyleShady Attia; Pierre Alphonsine; Mohamed Amer; Guirec Ruellan. 2020. "Towards a European rating system for sustainable student housing: Key performance indicators (KPIs) and a multi-criteria assessment approach." Environmental and Sustainability Indicators 7, no. : 100052.
Wind is one of the main factors affecting people's outdoor thermal sensation. Ongoing urbanization and urban densification are transforming the urban climate and complicating the pedestrian-level wind environment. Therefore, the main aim of this research is to evaluate the potential wind-cooling effect on human outdoor thermal conditions. Accordingly, the current research attempts determine the best wind directions for thermal comfort at the studied stations and how these factors will be changed under the effects of global warming. Outdoor thermal conditions were modeled based on the physiologically equivalent temperature (PET) thermal index using RayMan software for the decades of the 2000s and the 2040s in different climate types of Iran (Csb, BWh, Csa, and BSh) To estimate the potential cooling effect of wind, the PET was calculated (1) under actual wind conditions, and (2) under calm wind (0.05 m/s) conditions. Then, the ΔPET for these two conditions, which indicates the cooling potential effect (CPE) of the wind, was calculated for four representative stations (Ardebil, Bandar Abbas, Gorgan, and Shiraz). In comparison with the 2000s, the results indicated that by the 2040s, the predicted wind cooling potential will have increased in Ardebil, Shiraz, Bandar Abbas and Gorgan (CPE of 13.2 °C, 13.1 °C, 11.2 °C, and 11 °C, respectively). Based on the overall average of two climate change scenarios (A2 and B1) used in this study, the occurrence of "comfortable" conditions by the 2040s will have increased in Bandar Abbas, Shiraz, and Ardebil by 1.1%, 0.4%, and 0.3%, respectively, while it will have decreased in Gorgan by 1.5%. Accounting for the cooling effect of wind, the comfort cooling potential of wind is predicted to rise by an average of 1.6 °C in the 2040s compared with the 2000s in all the studied stations. Therefore, this will affect the microclimates positivley and could reduce the urban heat island effects.
Gholamreza Roshan; Masoumeh Moghbel; Shady Attia. Evaluating the wind cooling potential on outdoor thermal comfort in selected Iranian climate types. Journal of Thermal Biology 2020, 92, 102660 .
AMA StyleGholamreza Roshan, Masoumeh Moghbel, Shady Attia. Evaluating the wind cooling potential on outdoor thermal comfort in selected Iranian climate types. Journal of Thermal Biology. 2020; 92 ():102660.
Chicago/Turabian StyleGholamreza Roshan; Masoumeh Moghbel; Shady Attia. 2020. "Evaluating the wind cooling potential on outdoor thermal comfort in selected Iranian climate types." Journal of Thermal Biology 92, no. : 102660.
Climatic spatial maps are essential for understanding the thermal conditions of cities and estimate their cooling and heating energy needs. Climate maps allow building designers and city planners to get adequately informed without accessing, analyzing or interpreting dense textual information. In this study, a representative residential benchmark model was simulated in seventy-four cities of Algeria. The simulation results were interpolated using geographic information systems to generate six high-resolution maps that spatially estimate and visualize the discomfort hours and cooling/heating energy needs. The unique methodology relies on a reliable weather dataset (2004–2018) and combines the power of building performance simulation and geographic information systems. The results of these analyses provide easy to understand and web-based atlas that can be used to explore regional and local climate and quantify the discomfort hours, the heating/cooling energy needs and energy use intensity. The spatial maps are not a static product, but rather data-rich content, which can be expanded to include the most important cities of Algeria. The capabilities of the tool allow architects and urban planners to understand the climate better and propose practical design guidance.
Samir Semahi; Mohammed Benbouras; Waqas Mahar; Noureddine Zemmouri; Shady Attia. Development of Spatial Distribution Maps for Energy Demand and Thermal Comfort Estimation in Algeria. Sustainability 2020, 12, 6066 .
AMA StyleSamir Semahi, Mohammed Benbouras, Waqas Mahar, Noureddine Zemmouri, Shady Attia. Development of Spatial Distribution Maps for Energy Demand and Thermal Comfort Estimation in Algeria. Sustainability. 2020; 12 (15):6066.
Chicago/Turabian StyleSamir Semahi; Mohammed Benbouras; Waqas Mahar; Noureddine Zemmouri; Shady Attia. 2020. "Development of Spatial Distribution Maps for Energy Demand and Thermal Comfort Estimation in Algeria." Sustainability 12, no. 15: 6066.
The interest to find cost-optimal zero-energy solutions for building, using multi-objective optimization, has risen dramatically over the last decade. Accordingly, several studies have been carried out, proposing new methods and tools. None, however, has introduced a simplified approach that is viable by a broader range of users. This study addresses this lack, offering a methodology that supports the decision making process on cost-optimal zero energy building, using a novel approach, namely Multi-Objective Parametric Analysis (MOPA), rather than optimization algorithms. This study adds to the domain of roof stacking construction by setting the weight of construction as a third objective. The current methodology is applied to a newly developed theoretical Reference Building (RB) for a Belgian passive roof stacking house. Different options of the building’s superstructure components (walls, roof, and windows) have been examined. MOPA follows three consecutive steps: modeling setup, parametric simulation, and ends up with evaluation and selection. The results show cost-optimal zero-energy and lightweight packages of design variables for the building envelope.
Mohamed Amer; Mohamed Hamdy; Thomas Wortmann; Ahmed Mustafa; Shady Attia. Methodology for design decision support of cost-optimal zero-energy lightweight construction. Energy and Buildings 2020, 223, 110170 .
AMA StyleMohamed Amer, Mohamed Hamdy, Thomas Wortmann, Ahmed Mustafa, Shady Attia. Methodology for design decision support of cost-optimal zero-energy lightweight construction. Energy and Buildings. 2020; 223 ():110170.
Chicago/Turabian StyleMohamed Amer; Mohamed Hamdy; Thomas Wortmann; Ahmed Mustafa; Shady Attia. 2020. "Methodology for design decision support of cost-optimal zero-energy lightweight construction." Energy and Buildings 223, no. : 110170.
There is a growing interest in adaptive facade technologies to counter overheating problems and well‐being concerns in smart and high‐performance buildings. However, traditional literature review studies do not necessarily provide deep insights into the future trends of adaptive facade technologies. To address these limitations, this paper proposes a novel conceptual framework and technological classification for adaptive facades in the future. Our research methodology includes a literature review expert interviews and content analysis. In‐depth interviews with 27 international adaptive facade experts were conducted with a focus on the European context. The results categorize the adaptive facade technologies under four promising families and present a conceptual framework that identifies human‐centered design, smart building operating systems, service‐driven solutions, circularity, and materials as the main drivers of the facade technological advancements. Overall, this methodology yields new and rich qualitative knowledge related to adaptive facades; however, it has certain limitations, such as being time‐consuming. The research provides insights on future delivery processes and the future structural trends of adaptive facades. The new categorization and framework articulate the multifunctionality and performance requirements of facade technologies including smartness, automation, comfort, and well‐being.
Shady Attia; Romain Lioure; Quentin Declaude. Future trends and main concepts of adaptive facade systems. Energy Science & Engineering 2020, 8, 3255 -3272.
AMA StyleShady Attia, Romain Lioure, Quentin Declaude. Future trends and main concepts of adaptive facade systems. Energy Science & Engineering. 2020; 8 (9):3255-3272.
Chicago/Turabian StyleShady Attia; Romain Lioure; Quentin Declaude. 2020. "Future trends and main concepts of adaptive facade systems." Energy Science & Engineering 8, no. 9: 3255-3272.
The interest in occupant interaction with building controls and automation systems is growing due to the wider availability of embedded sensing devices and automated or intelligent building components that can integrate building control strategies with occupant-centred data and lead to greater occupant satisfaction and reduction in energy consumption. An area of particular interest is the interaction strategies between occupants and the so called automated facades, such as dynamic shading devices and switchable glazing. Occupant-Facade interactions are often disruptive and source of dissatisfaction because of conflicts between competing requirements, e.g. energy-efficiency and indoor environmental quality. To solve these conflicts, expertise from several disciplines is required, including Behavioural Science and Building Physics, but the absence of common research frameworks impedes knowledge transfer between different fields of expertise. This paper reviews existing multi-disciplinary research on occupant interaction with facades, buildings and automation systems and provides a new classification scheme of Occupant-Facade interaction. The scheme is based on an extensive review of interactive scenarios between occupants and facades that are summarised in this paper. The classification scheme was found to be successful in: 1) capturing the multidisciplinary nature of interactive scenarios by clarifying relationships between components; 2) identifying similarities and characteristics among interactive scenarios; 3) understanding research gaps. The classification scheme proposed in this paper has the potential to be a useful tool for the multi-disciplinary research community in this field. The review also showed that more research is needed to characterise the holistic and multi-disciplinary effect of occupant interaction with intelligent building components.
Alessandra Luna-Navarro; Roel Loonen; Miren Juaristi; Aurora Monge-Barrio; Shady Attia; Mauro Overend. Occupant-Facade interaction: a review and classification scheme. Building and Environment 2020, 177, 106880 .
AMA StyleAlessandra Luna-Navarro, Roel Loonen, Miren Juaristi, Aurora Monge-Barrio, Shady Attia, Mauro Overend. Occupant-Facade interaction: a review and classification scheme. Building and Environment. 2020; 177 ():106880.
Chicago/Turabian StyleAlessandra Luna-Navarro; Roel Loonen; Miren Juaristi; Aurora Monge-Barrio; Shady Attia; Mauro Overend. 2020. "Occupant-Facade interaction: a review and classification scheme." Building and Environment 177, no. : 106880.
The aim of this study is to develop an energy performance data set and two building performance simulation benchmark models for high performance schools in Belgium. The study reports the results of an inventory and field survey conducted on nearly Zero Energy Schools (nZES) and Passive House Schools (PHS) constructed after year 2013. An analysis of energy consumption (electricity and natural gas) and a walkthrough survey were conducted during May 2018. The energy consumption analysis was done for the occupancy period of 2015–2018 based on monthly consumption data. Two building performance simulation models are created in EnergyPlus to benchmark the average energy consumption and building characteristics. The validity of the estimate has been further checked against the public statistics and verified through model calibration and utility bill comparison. The paper provides a timely opportunity to evaluate the real performance of nZES, in relation to design assumptions and how schools’ professionals can turn the energy performance gap challenge to their advantage. The findings on energy needs and use intensity are useful in temperate and continental climates.
Shady Attia; Niloufar Shadmanfar; Federico Ricci. Developing two benchmark models for nearly zero energy schools. Applied Energy 2020, 263, 114614 .
AMA StyleShady Attia, Niloufar Shadmanfar, Federico Ricci. Developing two benchmark models for nearly zero energy schools. Applied Energy. 2020; 263 ():114614.
Chicago/Turabian StyleShady Attia; Niloufar Shadmanfar; Federico Ricci. 2020. "Developing two benchmark models for nearly zero energy schools." Applied Energy 263, no. : 114614.
Oases throughout the world have become important ecosystems to replenish food and water supplies. The Saharan Oases exist above the largest underground water supplies in the World. In North Africa, oases witness significantly growing populations in the oasis towns and receive thousands of tourists yearly. In oasis settlements, the majority of the population spends most of the time outdoors, in extremely hot conditions; however, few studies have investigated urban outdoor thermal comfort conditions. Therefore, this study aimed to assess thermal comfort in the Tolga Oasis Complex and test the validity of the ‘oasis effect’ concept. The methodology is based on comparative field measurement and calculation approaches in the heart of Tolga Palm Grove and in different urban settlements. Results indicate highest heat stress levels (Physiologically Equivalent Temperature (PET) index) in the oases Palm Grove in July, PET = 41.7 °C, and urban settlements, PET = 40.9 °C. Despite the significant difference between the old and new settlement fabrics, our measurements and calculation did not identify any noticeable variation of thermal comfort. Thus, the oasis effect on the outdoor thermal comfort was insignificant (during July and August 2018). Finally, the study discusses ways to improve outdoor spaces design and relieve heat stress in the settlements of Tolga.
Mohamed Elhadi Matallah; Djamel Alkama; Atef Ahriz; Shady Attia. Assessment of the Outdoor Thermal Comfort in Oases Settlements. Atmosphere 2020, 11, 185 .
AMA StyleMohamed Elhadi Matallah, Djamel Alkama, Atef Ahriz, Shady Attia. Assessment of the Outdoor Thermal Comfort in Oases Settlements. Atmosphere. 2020; 11 (2):185.
Chicago/Turabian StyleMohamed Elhadi Matallah; Djamel Alkama; Atef Ahriz; Shady Attia. 2020. "Assessment of the Outdoor Thermal Comfort in Oases Settlements." Atmosphere 11, no. 2: 185.
Buildings are significant drivers of greenhouse gas emissions and energy consumption. Improving the thermal comfort of occupants in free-running buildings and avoiding active and fossil fuel-based systems is the main challenge in many cities worldwide. However, the impacts of passive design measures on thermal comfort in cold semi-arid regions are seldom studied. With the rapid urbanization and the widespread use of personalised heating and cooling systems, there is a need to inform building designers and city authorities about passive design measures that can achieve nearly optimal conditions. Therefore, in this study, a global sensitivity analysis of the impact of passive design parameters on adaptive comfort in cold semi-arid climates was conducted. A representative residential building was simulated and calibrated in Quetta, Pakistan, to identify key design parameters for optimal thermal comfort. The results list and rank a set of passive design recommendations that can be used widely in similar climates. The results show that among the investigated 21 design variables, the insulation type of roof is the most influential design variable. Overall, the sensitivity analysis yielded new quantitative and qualitative knowledge about the passive design of buildings with personalised heating systems, but the used sensitivity analysis has some limitations. Finally, this study provides evidence-based and informed design recommendations that can serve architects and homeowners to integrate passive design measures at the earliest conceptual design phases in cold semi-arid climates.
Waqas Ahmed Mahar; Griet Verbeeck; Sigrid Reiter; Shady Attia. Sensitivity Analysis of Passive Design Strategies for Residential Buildings in Cold Semi-Arid Climates. Sustainability 2020, 12, 1091 .
AMA StyleWaqas Ahmed Mahar, Griet Verbeeck, Sigrid Reiter, Shady Attia. Sensitivity Analysis of Passive Design Strategies for Residential Buildings in Cold Semi-Arid Climates. Sustainability. 2020; 12 (3):1091.
Chicago/Turabian StyleWaqas Ahmed Mahar; Griet Verbeeck; Sigrid Reiter; Shady Attia. 2020. "Sensitivity Analysis of Passive Design Strategies for Residential Buildings in Cold Semi-Arid Climates." Sustainability 12, no. 3: 1091.
The trend of urban and suburban developments is concluding that more than 70% of the world population will be living in urban areas by mid-21st century within dis-comfortable built environment. In Egypt, a concern about climate change resilient communities is having more listeners after Paris climate agreement in 2015. Therefore, assessing present and future outdoor microclimatic effects on the indoor environmental quality and energy consumption in turn is crucial to build the capacities for mitigation and adaptation strategies. In this research work, the coupled outdoor–indoor simulation methodology is applied using ENVI-met and DesignBuilder to let buildings respond to the street canyon conditions since indoor simulation packages does not consider urban details. Such mutual relation is explored in a site case in Borg El-Arab, Alexandria, Egypt, in which urban canopy green coverage (trees, green walls and roofs) have been applied. Comparing results of indoor thermal comfort for the examined site buildings in present until end of century (2020, 2050 and 2080) with and without the urban canopy green coverage; show that indicators and adaptation strategies can be developed for climate change scenarios.
Mohammad Fahmy; M. Mahdy; S. Mahmoud; M. Abdelalim; S. Ezzeldin; Shady Attia. Influence of urban canopy green coverage and future climate change scenarios on energy consumption of new sub-urban residential developments using coupled simulation techniques: A case study in Alexandria, Egypt. Energy Reports 2020, 6, 638 -645.
AMA StyleMohammad Fahmy, M. Mahdy, S. Mahmoud, M. Abdelalim, S. Ezzeldin, Shady Attia. Influence of urban canopy green coverage and future climate change scenarios on energy consumption of new sub-urban residential developments using coupled simulation techniques: A case study in Alexandria, Egypt. Energy Reports. 2020; 6 ():638-645.
Chicago/Turabian StyleMohammad Fahmy; M. Mahdy; S. Mahmoud; M. Abdelalim; S. Ezzeldin; Shady Attia. 2020. "Influence of urban canopy green coverage and future climate change scenarios on energy consumption of new sub-urban residential developments using coupled simulation techniques: A case study in Alexandria, Egypt." Energy Reports 6, no. : 638-645.