Ghazy Albaqawy - Academia.edu (original) (raw)

Papers by Ghazy Albaqawy

Research paper thumbnail of The visual comfort, economic feasibility, and overall energy consumption of tubular daylighting device system configurations in deep plan office buildings in Saudi Arabia

Journal of Building Engineering

Despite the abundance of daylight in hot desert climates, deep-plan office buildings still lack t... more Despite the abundance of daylight in hot desert climates, deep-plan office buildings still lack the provision of sufficient daylight. Although tubular daylighting devices (TDDs) offer a potential solution, they may have visual and economic consequences. Therefore, the present study evaluated the visual comfort, overall energy consumption, and economic feasibility of multiple TDD configurations. Typical deep-plan office space has been simulated based on a field-validated simulation process to evaluate visual comfort and energy consumption. The WLCC method was used to assess the economic feasibility. The reference case was illuminated using LED and a dimming control system with photosensors placed in cardinal orientations. Supplementary daylight was provided using different configurations of vertical and horizontal TDDs. Window shading devices were used to enhance visual comfort. The study found that vertical TDDs perform better than horizontal TDDs in terms of illumination uniformity and economic feasibility. They reduced the electric lighting load by up to 21%. However, the utilization of the TDDs in the hot desert climate has the potential to significantly increase indoor heat gain, which, in turn, increases the cooling energy. It is found that the additional energy required for cooling far outweighs the energy-saving benefits gained by TDDs. Accordingly, thermal issues associated with the utilization of TDDs should be investigated to allow widespread use of them in arid regions where high solar radiation is available throughout the year. Moreover, other daylighting-associated benefits, such as users’ productivity enhancement and health and mood improvement, should be considered to promote the usage of TDDs and boost their economic returns.

Research paper thumbnail of Architectural Heritage in Saudi Arabia Between Laws, Organizational Structures and Implementation

Saudi Arabia has significant cultural heritage that faces challenges, at both local and national ... more Saudi Arabia has significant cultural heritage that faces challenges, at both local and national levels, to be acceptable as a valuable cultural resource. The country, in general, and the Ha'il region specifically, has important architectural, archaeological and urban heritage assets that has not been adequately researched, particularly with regard to how national heritage laws and organizational structures and local approaches to heritage management implementation impact on these resources. The government has begun encouraging cultural tourism through many initiatives, and much effort is being directed towards its development. The framework of this doctoral research has been shaped by the aim to identify the nature of the gap in Saudi Arabia in understanding the value of cultural heritage as the prime tourism resource, both tangible and intangible, at national and local levels. The research makes an important contribution to Saudi studies by addressing this gap through the investigation of, a) the laws, policies and regulations that direct and guide heritage development, b) the organizational structures that enforce these regulations, and c) the implementation processes that translate the laws into actions towards heritage sites development and user engagement. This is accomplished through an interdisciplinary approach to the survey, documentation, analysis and interpretation of the available laws, structures and UNESCO United Nations Educational, Scientific and Cultural Organization Chapter 1: Introduction Chapter 1: Introduction 1.1 Introduction .

Research paper thumbnail of Assessment of Saudi Arabia’s Classification and Selection Criteria for Heritage Sites: A Case Study of Barzan Heritage Area in Hail City

Sustainability

Cultural heritage has numerous developmental prospects that might contribute to the sustainable d... more Cultural heritage has numerous developmental prospects that might contribute to the sustainable development and quality of life of communities. However, cultural heritage products have a complex relationship with many sectors. This paper examines Saudi criteria for the classification and selection of cultural heritage and presents a case study on the implementation of these criteria. It aims to develop local assessment criteria for cultural heritage values and conservation in Saudi Arabia. A theoretical analysis has been conducted to evaluate the criteria for the classification and selection of architectural heritage value and the relationship between whole heritage values. The paper discusses the criteria’s limitations and impacts and identifies misunderstandings of cultural heritage values in Saudi Arabia. The findings of this study indicate that the mechanism of implementing a list can affect both tangible and intangible cultural heritage in different ways and at different levels...

Research paper thumbnail of The Rehabilitation of the Historic Barzan Traditional Market and Its Impact on Cultural Tourism in Hail City

Land

Hail is regarded as one of the richest cities in Saudi Arabia in terms of heritage sites. The cit... more Hail is regarded as one of the richest cities in Saudi Arabia in terms of heritage sites. The city center, where the Barzan marketplace is located, is regarded as critical to the city’s cultural tourism. The purpose of this study is to understand the traditional Barzan market rehabilitation project within the city center and its role in preserving Hail’s urban identity. According to the study, the rehabilitation of the city center presents an opportunity for urban development to boost tourism and connect various historic landmarks in a variety of ways, including the development of pedestrian routes. The study also presents and discusses several complexities and challenges that must be considered when implementing such an urban development. A multi-approach methodology is employed to investigate several urban factors and involved actors, including a social online survey and semi-structured interviews, as well as empirical data to support the study objectives. The study’s findings ind...

Research paper thumbnail of The Heritage Jewel of Saudi Arabia: A Descriptive Analysis of the Heritage Management and Development Activities in the At-Turaif District in Ad-Dir’iyah, a World Heritage Site (WHS)

Sustainability, Aug 28, 2022

This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY

Research paper thumbnail of Assessment of the overall energy performance of an SPD smart window in a hot desert climate

Research paper thumbnail of A Short Review of Influencing Factors of Islamic Architecture in Aleppo, Syria

Engineering, Technology & Applied Science Research, 2020

This research aims to examine Aleppo’s distinctive architectural design profiles, most precisely ... more This research aims to examine Aleppo’s distinctive architectural design profiles, most precisely those of residential buildings, and to highlight factors that indicate how the Islamic culture influenced the architectural structure in the pre-civil war era. Descriptive research, observation, and documentation of architectural elements that determine the general characteristics of housing in the city of Aleppo were used. The study focused on Wakil and Zamriah houses as case studies because of their accessibility and excellent exemplary style. The current study sheds light on the history of Aleppo’s urban development and its influence by the Islamic civilization during the late Ottoman era up to the Syrian civil war in 2011. It is shown how Islamic civilization influenced Aleppo's residential buildings in terms of simplicity, respect for human scale, equality, and privacy.

Research paper thumbnail of The impact of generative principles on the traditional Islamic built environment: The context of the Saudi Arabian built environment

Ain Shams Engineering Journal

Research paper thumbnail of Performance Analysis of Photovoltaic Integrated Shading Devices (PVSDs) and Semi-Transparent Photovoltaic (STPV) Devices Retrofitted to a Prototype Office Building in a Hot Desert Climate

Sustainability

This paper presents the impact on energy performance and visual comfort of retrofitting photovolt... more This paper presents the impact on energy performance and visual comfort of retrofitting photovoltaic integrated shading devices (PVSDs) to the façade of a prototype office building in a hot desert climate. EnergyPlus™ and the DIVA-for-Rhino© plug-ins were used to perform numerical simulations and parametric analyses examining the energy performance and visual comfort of five configurations, namely: (1) inclined single panel PVSDs, (2) unfilled eggcrate PVSDs, (3) a louvre PVSD of ten slats tilted 30° outward, (4) a louvre PVSD of five slats tilted 30° outward, and (5) an STPV module with 20% transparency which were then compared to a reference office building (ROB) model. The field measurements of an off-grid system at various tilt angles provided an optimum tilt angle of 30°. A 30° tilt was then integrated into some of the PVSD designs. The results revealed that the integration of PVSDs significantly improved overall energy performance and reduced glare. The unfilled eggcrate PVSD ...

Research paper thumbnail of CFD investigation of effect of nanofluid filled Trombe wall on 3D convective heat transfer

Journal of Central South University

Research paper thumbnail of The Effects of Steam-Curing on the Properties of Concrete

Engineering, Technology & Applied Science Research, 2021

Worldwide, concrete is the most preferred construction material. The steam curing method is favor... more Worldwide, concrete is the most preferred construction material. The steam curing method is favored when there is a need for accelerating strength. This paper presents the study of the compressive and flexural tensile strength of concrete subjected to eight different steam cures. In addition, the stressstrain curve and the modulus of elasticity were determined at the age of 28 days. The compressive strength test results show that after treatment, strength increases with concrete maturity. A cycle with a pre-heating period gives better results than a cycle without a pre-heating period. The longer the duration of the maximum temperature period, the lower the strength drop compared to the control concrete. The best results were obtained for concrete treated according to the following cycle: a 3-hour pre-heating period at 20 o C, a 2-hour increase of temperature from 20 to 70C, and a 3 hour of maximum temperature of 70C. Keywords-steam curing; compressive strength; flexural tensile stre...

Research paper thumbnail of Energy and Daylighting Evaluation of Integrated Semitransparent Photovoltaic Windows with Internal Light Shelves in Open-Office Buildings

Advances in Civil Engineering

In modern architecture, highly glazed commercial buildings account for considerable amount of ene... more In modern architecture, highly glazed commercial buildings account for considerable amount of energy, specifically in cold and hot climates because of heating, cooling, and lighting energy load demand. Abatement of this high building energy is possible by employing semitransparent photovoltaic (STPV) window which has triple point advantages as they control the admitted solar gain and daylight and generates benign electricity. Integration of internal light shelves (ILS) to this STPV window assists in controlling visual comfort. Thus, this study aims to evaluate the impact of a nonuniform layout of double-glazing (DG) low-e STPV and DG low-E argon-filled clear glass integrated into a fully glazed open-office facade combined with ILS in cardinal orientations under Riyadh, London, Kuala Lumpur, and Algiers climates. Comprehensive energetic and radiance simulations were conducted to evaluate three groups of STPV configurations. The first group replaced the glazing area with amorphous sil...

Research paper thumbnail of Integrating Solar Photovoltaics in Residential Buildings: Towards Zero Energy Buildings in Hail City, KSA

Sustainability

In recent years, most cities have faced great demand for electricity supply due to rapid populati... more In recent years, most cities have faced great demand for electricity supply due to rapid population growth and industrialization. Supplying sufficient electrical energy, while reducing greenhouse gas emissions, is one of the major concerns of policymakers and scientists all over the world. In Saudi Arabia, local authorities are increasingly aware of the necessity of reducing the environmental impact of nonrenewable energy by exploring alternative sustainable energy sources and improving buildings’ energy efficiency. Recently, building-integrated photovoltaic (BIPV) technology has been regarded as a promising technology for generating instantaneous sustainable energy for buildings. To achieve a substantial contribution regarding zero energy buildings, solar energy should be widely used in residential buildings within the urban context. This paper examines how to achieve an appropriate model for integrating photovoltaics on the rooftop of residential buildings in Hail city to provide ...

Research paper thumbnail of Performance Analysis of Photovoltaic Integrated Shading Devices (PVSDs) and Semi-Transparent Photovoltaic (STPV) Devices Retrofitted to a Prototype Office Building in a Hot Desert Climate

Sustainability

This paper presents the impact on energy performance and visual comfort of retrofitting photovolt... more This paper presents the impact on energy performance and visual comfort of retrofitting photovoltaic integrated shading devices (PVSDs) to the façade of a prototype office building in a hot desert climate. EnergyPlus™ and the DIVA-for-Rhino© plug-ins were used to perform numerical simulations and parametric analyses examining the energy performance and visual comfort of five configurations, namely: (1) inclined single panel PVSDs, (2) unfilled eggcrate PVSDs, (3) a louvre PVSD of ten slats tilted 30° outward, (4) a louvre PVSD of five slats tilted 30° outward, and (5) an STPV module with 20% transparency which were then compared to a reference office building (ROB) model. The field measurements of an off-grid system at various tilt angles provided an optimum tilt angle of 30°. A 30° tilt was then integrated into some of the PVSD designs. The results revealed that the integration of PVSDs significantly improved overall energy performance and reduced glare. The unfilled eggcrate PVSD ...

Research paper thumbnail of Impact of COVID-19 pandemic on socio-economic, energy-environment and transport sector globally and sustainable development goal (SDG)

Journal of Cleaner Production

Research paper thumbnail of Energy and Daylighting Evaluation of Integrated Semitransparent Photovoltaic Windows with Internal Light Shelves in Open-Office Buildings

Advances in Civil Engineering

In modern architecture, highly glazed commercial buildings account for considerable amount of ene... more In modern architecture, highly glazed commercial buildings account for considerable amount of energy, specifically in cold and hot climates because of heating, cooling, and lighting energy load demand. Abatement of this high building energy is possible by employing semitransparent photovoltaic (STPV) window which has triple point advantages as they control the admitted solar gain and daylight and generates benign electricity. Integration of internal light shelves (ILS) to this STPV window assists in controlling visual comfort. Thus, this study aims to evaluate the impact of a nonuniform layout of double-glazing (DG) low-e STPV and DG low-E argon-filled clear glass integrated into a fully glazed open-office facade combined with ILS in cardinal orientations under Riyadh, London, Kuala Lumpur, and Algiers climates. Comprehensive energetic and radiance simulations were conducted to evaluate three groups of STPV configurations. The first group replaced the glazing area with amorphous sil...

Research paper thumbnail of The Optimum Performance of Building Integrated Photovoltaic (BIPV) Windows Under a Semi-Arid Climate in Algerian Office Buildings

Sustainability

Recently, Building Integrated Photovoltaic (BIPV) windows have become an alternative energy solut... more Recently, Building Integrated Photovoltaic (BIPV) windows have become an alternative energy solution to achieve a zero-energy building (ZEB) and provide visual comfort. In Algeria, some problems arise due to the high energy consumption levels of the building sector. Large amounts of this energy are lost through the external envelope façade, because of the poorness of the window’s design. Therefore, this research aimed to investigate the optimum BIPV window performance for overall energy consumption (OEC) in terms of energy output, heating and cooling load, and artificial lighting to ensure visual comfort and energy savings in typical office buildings under a semi-arid climate. Field measurements of the tested office were carried out during a critical period. The data have been validated and used to develop a model for an OEC simulation. Extensive simulations using graphical optimization methods are applied to the base-model, as well as nine commercially-available BIPV modules with d...

Research paper thumbnail of The visual comfort, economic feasibility, and overall energy consumption of tubular daylighting device system configurations in deep plan office buildings in Saudi Arabia

Journal of Building Engineering

Despite the abundance of daylight in hot desert climates, deep-plan office buildings still lack t... more Despite the abundance of daylight in hot desert climates, deep-plan office buildings still lack the provision of sufficient daylight. Although tubular daylighting devices (TDDs) offer a potential solution, they may have visual and economic consequences. Therefore, the present study evaluated the visual comfort, overall energy consumption, and economic feasibility of multiple TDD configurations. Typical deep-plan office space has been simulated based on a field-validated simulation process to evaluate visual comfort and energy consumption. The WLCC method was used to assess the economic feasibility. The reference case was illuminated using LED and a dimming control system with photosensors placed in cardinal orientations. Supplementary daylight was provided using different configurations of vertical and horizontal TDDs. Window shading devices were used to enhance visual comfort. The study found that vertical TDDs perform better than horizontal TDDs in terms of illumination uniformity and economic feasibility. They reduced the electric lighting load by up to 21%. However, the utilization of the TDDs in the hot desert climate has the potential to significantly increase indoor heat gain, which, in turn, increases the cooling energy. It is found that the additional energy required for cooling far outweighs the energy-saving benefits gained by TDDs. Accordingly, thermal issues associated with the utilization of TDDs should be investigated to allow widespread use of them in arid regions where high solar radiation is available throughout the year. Moreover, other daylighting-associated benefits, such as users’ productivity enhancement and health and mood improvement, should be considered to promote the usage of TDDs and boost their economic returns.

Research paper thumbnail of Architectural Heritage in Saudi Arabia Between Laws, Organizational Structures and Implementation

Saudi Arabia has significant cultural heritage that faces challenges, at both local and national ... more Saudi Arabia has significant cultural heritage that faces challenges, at both local and national levels, to be acceptable as a valuable cultural resource. The country, in general, and the Ha'il region specifically, has important architectural, archaeological and urban heritage assets that has not been adequately researched, particularly with regard to how national heritage laws and organizational structures and local approaches to heritage management implementation impact on these resources. The government has begun encouraging cultural tourism through many initiatives, and much effort is being directed towards its development. The framework of this doctoral research has been shaped by the aim to identify the nature of the gap in Saudi Arabia in understanding the value of cultural heritage as the prime tourism resource, both tangible and intangible, at national and local levels. The research makes an important contribution to Saudi studies by addressing this gap through the investigation of, a) the laws, policies and regulations that direct and guide heritage development, b) the organizational structures that enforce these regulations, and c) the implementation processes that translate the laws into actions towards heritage sites development and user engagement. This is accomplished through an interdisciplinary approach to the survey, documentation, analysis and interpretation of the available laws, structures and UNESCO United Nations Educational, Scientific and Cultural Organization Chapter 1: Introduction Chapter 1: Introduction 1.1 Introduction .

Research paper thumbnail of Assessment of Saudi Arabia’s Classification and Selection Criteria for Heritage Sites: A Case Study of Barzan Heritage Area in Hail City

Sustainability

Cultural heritage has numerous developmental prospects that might contribute to the sustainable d... more Cultural heritage has numerous developmental prospects that might contribute to the sustainable development and quality of life of communities. However, cultural heritage products have a complex relationship with many sectors. This paper examines Saudi criteria for the classification and selection of cultural heritage and presents a case study on the implementation of these criteria. It aims to develop local assessment criteria for cultural heritage values and conservation in Saudi Arabia. A theoretical analysis has been conducted to evaluate the criteria for the classification and selection of architectural heritage value and the relationship between whole heritage values. The paper discusses the criteria’s limitations and impacts and identifies misunderstandings of cultural heritage values in Saudi Arabia. The findings of this study indicate that the mechanism of implementing a list can affect both tangible and intangible cultural heritage in different ways and at different levels...

Research paper thumbnail of The Rehabilitation of the Historic Barzan Traditional Market and Its Impact on Cultural Tourism in Hail City

Land

Hail is regarded as one of the richest cities in Saudi Arabia in terms of heritage sites. The cit... more Hail is regarded as one of the richest cities in Saudi Arabia in terms of heritage sites. The city center, where the Barzan marketplace is located, is regarded as critical to the city’s cultural tourism. The purpose of this study is to understand the traditional Barzan market rehabilitation project within the city center and its role in preserving Hail’s urban identity. According to the study, the rehabilitation of the city center presents an opportunity for urban development to boost tourism and connect various historic landmarks in a variety of ways, including the development of pedestrian routes. The study also presents and discusses several complexities and challenges that must be considered when implementing such an urban development. A multi-approach methodology is employed to investigate several urban factors and involved actors, including a social online survey and semi-structured interviews, as well as empirical data to support the study objectives. The study’s findings ind...

Research paper thumbnail of The Heritage Jewel of Saudi Arabia: A Descriptive Analysis of the Heritage Management and Development Activities in the At-Turaif District in Ad-Dir’iyah, a World Heritage Site (WHS)

Sustainability, Aug 28, 2022

This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY

Research paper thumbnail of Assessment of the overall energy performance of an SPD smart window in a hot desert climate

Research paper thumbnail of A Short Review of Influencing Factors of Islamic Architecture in Aleppo, Syria

Engineering, Technology & Applied Science Research, 2020

This research aims to examine Aleppo’s distinctive architectural design profiles, most precisely ... more This research aims to examine Aleppo’s distinctive architectural design profiles, most precisely those of residential buildings, and to highlight factors that indicate how the Islamic culture influenced the architectural structure in the pre-civil war era. Descriptive research, observation, and documentation of architectural elements that determine the general characteristics of housing in the city of Aleppo were used. The study focused on Wakil and Zamriah houses as case studies because of their accessibility and excellent exemplary style. The current study sheds light on the history of Aleppo’s urban development and its influence by the Islamic civilization during the late Ottoman era up to the Syrian civil war in 2011. It is shown how Islamic civilization influenced Aleppo's residential buildings in terms of simplicity, respect for human scale, equality, and privacy.

Research paper thumbnail of The impact of generative principles on the traditional Islamic built environment: The context of the Saudi Arabian built environment

Ain Shams Engineering Journal

Research paper thumbnail of Performance Analysis of Photovoltaic Integrated Shading Devices (PVSDs) and Semi-Transparent Photovoltaic (STPV) Devices Retrofitted to a Prototype Office Building in a Hot Desert Climate

Sustainability

This paper presents the impact on energy performance and visual comfort of retrofitting photovolt... more This paper presents the impact on energy performance and visual comfort of retrofitting photovoltaic integrated shading devices (PVSDs) to the façade of a prototype office building in a hot desert climate. EnergyPlus™ and the DIVA-for-Rhino© plug-ins were used to perform numerical simulations and parametric analyses examining the energy performance and visual comfort of five configurations, namely: (1) inclined single panel PVSDs, (2) unfilled eggcrate PVSDs, (3) a louvre PVSD of ten slats tilted 30° outward, (4) a louvre PVSD of five slats tilted 30° outward, and (5) an STPV module with 20% transparency which were then compared to a reference office building (ROB) model. The field measurements of an off-grid system at various tilt angles provided an optimum tilt angle of 30°. A 30° tilt was then integrated into some of the PVSD designs. The results revealed that the integration of PVSDs significantly improved overall energy performance and reduced glare. The unfilled eggcrate PVSD ...

Research paper thumbnail of CFD investigation of effect of nanofluid filled Trombe wall on 3D convective heat transfer

Journal of Central South University

Research paper thumbnail of The Effects of Steam-Curing on the Properties of Concrete

Engineering, Technology & Applied Science Research, 2021

Worldwide, concrete is the most preferred construction material. The steam curing method is favor... more Worldwide, concrete is the most preferred construction material. The steam curing method is favored when there is a need for accelerating strength. This paper presents the study of the compressive and flexural tensile strength of concrete subjected to eight different steam cures. In addition, the stressstrain curve and the modulus of elasticity were determined at the age of 28 days. The compressive strength test results show that after treatment, strength increases with concrete maturity. A cycle with a pre-heating period gives better results than a cycle without a pre-heating period. The longer the duration of the maximum temperature period, the lower the strength drop compared to the control concrete. The best results were obtained for concrete treated according to the following cycle: a 3-hour pre-heating period at 20 o C, a 2-hour increase of temperature from 20 to 70C, and a 3 hour of maximum temperature of 70C. Keywords-steam curing; compressive strength; flexural tensile stre...

Research paper thumbnail of Energy and Daylighting Evaluation of Integrated Semitransparent Photovoltaic Windows with Internal Light Shelves in Open-Office Buildings

Advances in Civil Engineering

In modern architecture, highly glazed commercial buildings account for considerable amount of ene... more In modern architecture, highly glazed commercial buildings account for considerable amount of energy, specifically in cold and hot climates because of heating, cooling, and lighting energy load demand. Abatement of this high building energy is possible by employing semitransparent photovoltaic (STPV) window which has triple point advantages as they control the admitted solar gain and daylight and generates benign electricity. Integration of internal light shelves (ILS) to this STPV window assists in controlling visual comfort. Thus, this study aims to evaluate the impact of a nonuniform layout of double-glazing (DG) low-e STPV and DG low-E argon-filled clear glass integrated into a fully glazed open-office facade combined with ILS in cardinal orientations under Riyadh, London, Kuala Lumpur, and Algiers climates. Comprehensive energetic and radiance simulations were conducted to evaluate three groups of STPV configurations. The first group replaced the glazing area with amorphous sil...

Research paper thumbnail of Integrating Solar Photovoltaics in Residential Buildings: Towards Zero Energy Buildings in Hail City, KSA

Sustainability

In recent years, most cities have faced great demand for electricity supply due to rapid populati... more In recent years, most cities have faced great demand for electricity supply due to rapid population growth and industrialization. Supplying sufficient electrical energy, while reducing greenhouse gas emissions, is one of the major concerns of policymakers and scientists all over the world. In Saudi Arabia, local authorities are increasingly aware of the necessity of reducing the environmental impact of nonrenewable energy by exploring alternative sustainable energy sources and improving buildings’ energy efficiency. Recently, building-integrated photovoltaic (BIPV) technology has been regarded as a promising technology for generating instantaneous sustainable energy for buildings. To achieve a substantial contribution regarding zero energy buildings, solar energy should be widely used in residential buildings within the urban context. This paper examines how to achieve an appropriate model for integrating photovoltaics on the rooftop of residential buildings in Hail city to provide ...

Research paper thumbnail of Performance Analysis of Photovoltaic Integrated Shading Devices (PVSDs) and Semi-Transparent Photovoltaic (STPV) Devices Retrofitted to a Prototype Office Building in a Hot Desert Climate

Sustainability

This paper presents the impact on energy performance and visual comfort of retrofitting photovolt... more This paper presents the impact on energy performance and visual comfort of retrofitting photovoltaic integrated shading devices (PVSDs) to the façade of a prototype office building in a hot desert climate. EnergyPlus™ and the DIVA-for-Rhino© plug-ins were used to perform numerical simulations and parametric analyses examining the energy performance and visual comfort of five configurations, namely: (1) inclined single panel PVSDs, (2) unfilled eggcrate PVSDs, (3) a louvre PVSD of ten slats tilted 30° outward, (4) a louvre PVSD of five slats tilted 30° outward, and (5) an STPV module with 20% transparency which were then compared to a reference office building (ROB) model. The field measurements of an off-grid system at various tilt angles provided an optimum tilt angle of 30°. A 30° tilt was then integrated into some of the PVSD designs. The results revealed that the integration of PVSDs significantly improved overall energy performance and reduced glare. The unfilled eggcrate PVSD ...

Research paper thumbnail of Impact of COVID-19 pandemic on socio-economic, energy-environment and transport sector globally and sustainable development goal (SDG)

Journal of Cleaner Production

Research paper thumbnail of Energy and Daylighting Evaluation of Integrated Semitransparent Photovoltaic Windows with Internal Light Shelves in Open-Office Buildings

Advances in Civil Engineering

In modern architecture, highly glazed commercial buildings account for considerable amount of ene... more In modern architecture, highly glazed commercial buildings account for considerable amount of energy, specifically in cold and hot climates because of heating, cooling, and lighting energy load demand. Abatement of this high building energy is possible by employing semitransparent photovoltaic (STPV) window which has triple point advantages as they control the admitted solar gain and daylight and generates benign electricity. Integration of internal light shelves (ILS) to this STPV window assists in controlling visual comfort. Thus, this study aims to evaluate the impact of a nonuniform layout of double-glazing (DG) low-e STPV and DG low-E argon-filled clear glass integrated into a fully glazed open-office facade combined with ILS in cardinal orientations under Riyadh, London, Kuala Lumpur, and Algiers climates. Comprehensive energetic and radiance simulations were conducted to evaluate three groups of STPV configurations. The first group replaced the glazing area with amorphous sil...

Research paper thumbnail of The Optimum Performance of Building Integrated Photovoltaic (BIPV) Windows Under a Semi-Arid Climate in Algerian Office Buildings

Sustainability

Recently, Building Integrated Photovoltaic (BIPV) windows have become an alternative energy solut... more Recently, Building Integrated Photovoltaic (BIPV) windows have become an alternative energy solution to achieve a zero-energy building (ZEB) and provide visual comfort. In Algeria, some problems arise due to the high energy consumption levels of the building sector. Large amounts of this energy are lost through the external envelope façade, because of the poorness of the window’s design. Therefore, this research aimed to investigate the optimum BIPV window performance for overall energy consumption (OEC) in terms of energy output, heating and cooling load, and artificial lighting to ensure visual comfort and energy savings in typical office buildings under a semi-arid climate. Field measurements of the tested office were carried out during a critical period. The data have been validated and used to develop a model for an OEC simulation. Extensive simulations using graphical optimization methods are applied to the base-model, as well as nine commercially-available BIPV modules with d...