Open Access. Powered by Scholars. Published by Universities.®

Architecture Commons™

Open Access. Powered by Scholars. Published by Universities.®

Architectural Technology

Ajla Aksamija

Articles 1 - 9 of 9

Full-Text Articles in Architecture

Thermoelectric Materials In Exterior Walls: Experimental Study On Using Smart Facades For Heating And Cooling In High-Performance Buildings, Ajla Aksamija, Zlatan Aksamija, Christopher H. Counihan, Dylan Brown, Meenakshi Upadhyaya Dec 2017

Thermoelectric Materials In Exterior Walls: Experimental Study On Using Smart Facades For Heating And Cooling In High-Performance Buildings, Ajla Aksamija, Zlatan Aksamija, Christopher H. Counihan, Dylan Brown, Meenakshi Upadhyaya

Ajla Aksamija

This article discusses design, prototype development and an experimental study of facade-integrated thermoelectric (TE) materials. TEs are smart materials that have the ability to produce a temperature gradient when electricity is applied, exploiting the Peltier effect, or to generate a voltage when exposed to a temperature gradient, utilizing the Seebeck effect. TEs can be used for heating, cooling, or power generation. In this research, heating and cooling potentials of these novel systems were explored. Initially, two low fidelity prototypes were designed and constructed, where one prototype was used to study integration of TE modules (TEM) as stand-alone elements in the …

Go to article

Experimental Study On Integration Of Thermoelectric Materials In Exterior Walls For Heating And Cooling In High-Performance Buildings, Ajla Aksamija, Zlatan Aksamija, Christopher H. Counihan, Dylan Brown, Meenakshi Upadhyaya Dec 2017

Experimental Study On Integration Of Thermoelectric Materials In Exterior Walls For Heating And Cooling In High-Performance Buildings, Ajla Aksamija, Zlatan Aksamija, Christopher H. Counihan, Dylan Brown, Meenakshi Upadhyaya

Ajla Aksamija

This article discusses the design, prototype development and an experimental study of facade-integrated thermoelectric (TE) materials. TEs are semiconductors that have the ability to produce a temperature gradient when electricity is applied, exploiting the Peltier effect, or to generate a voltage when exposed to a temperature gradient, utilizing the Seebeck effect. TEs can be used for heating, cooling, or power generation. In this research, heating and cooling applications of these novel systems were explored. Initially, we designed and constructed two prototypes, where one prototype was used to study integration of TE modules (TEM) as stand-alone elements in the facade, and …

Go to article

Thermal, Energy And Daylight Analysis Of Different Types Of Double Skin Façades In Various Climates, Ajla Aksamija Dec 2017

Thermal, Energy And Daylight Analysis Of Different Types Of Double Skin Façades In Various Climates, Ajla Aksamija

Ajla Aksamija

This article explores the thermal, energy, and daylighting performance of double skin façades (DSFs) in different climate types, specifically focusing on three typologies: box window, corridor, and multi-storey DSFs.  These systems were investigated and analysed to determine how different DSFs perform in comparison to each other, as well as a typical curtain wall (single skin glazed façade used as a baseline), in a multitude of climate applications. The utilised research methods included two-dimensional heat transfer analysis (Finite Element Method analysis), Computational Fluid Dynamics (CFD) analysis, energy modelling, and daylight simulations. Heat transfer analysis was used to determine heat transfer coefficients …

Go to article

Thermal And Energy Performance Of Double Skin Facades In Different Climate Types, Ajla Aksamija Dec 2016

Thermal And Energy Performance Of Double Skin Facades In Different Climate Types, Ajla Aksamija

Ajla Aksamija

This paper explores thermal and energy performance of double skin facades (DSFs) in different climate types, specifically focusing on three typologies: box window, corridor type and multistory DSFs. These systems were investigated and analyzed to answer the question of how the different DSFs perform in comparison to each other, as well as a typical curtain wall (single skin facade used as a baseline), in a multitude of climate applications. The utilized research methods included two-dimensional heat transfer analysis (finite element analysis), Computational Fluid Dynamics (CFD) analysis and energy modeling. Heat transfer analysis was used to determine heat transfer coefficients (U-values) …

Go to article

Double-Skin Facades And Daylight Simulations: Comparative Study Of Facade Typologies And Effects On Natural Light In Different Climates, Ajla Aksamija Dec 2016

Double-Skin Facades And Daylight Simulations: Comparative Study Of Facade Typologies And Effects On Natural Light In Different Climates, Ajla Aksamija

Ajla Aksamija

This article discusses results of a research study that investigated daylight performance of glazed double-skin facades (DSFs) in various climate types. The objectives of the study were: 1) to analyze the daylight levels in different types of DSFs (box window, corridor type, and multistory) in four different climates; 2) to compare daylight performance against the conventional single skin glazed facade (curtain wall); 3) to investigate the effects of facade orientations on daylight; and 4) to investigate the impacts of facade characteristics (different depth of air cavities in DSFs) on daylight levels. The research methods consisted of daylight simulations in Radiance …

Go to article

Climate Considerations For Facades, Ajla Aksamija Dec 2013

Climate Considerations For Facades, Ajla Aksamija

Ajla Aksamija

Facades are one of the most significant contributors to the energy budget and the comfort parameters of any building, and their designs and performance are essential factors for sustainable, energy-efficient, high-performance buildings. Basic methods for designing high-performance building facades include: orienting and developing geometry and massing of the building to respond to solar position, providing solar shading to control cooling loads and improve thermal comfort, using natural ventilation to reduce cooling loads and enhance air quality, minimizing energy used for artificial lighting and mechanical cooling and heating by optimizing exterior wall insulation and the use of daylighting. This article includes …

Go to article

Ontologies And Shape Grammars: Communication Between Knowledge-Based And Generative Systems, Francois Grobler, Ajla Aksamija, Hyunjoo Kim, Ramesh Krishnmurti, Kui Yue, Casey Hickerson Dec 2007

Ontologies And Shape Grammars: Communication Between Knowledge-Based And Generative Systems, Francois Grobler, Ajla Aksamija, Hyunjoo Kim, Ramesh Krishnmurti, Kui Yue, Casey Hickerson

Ajla Aksamija

This paper discusses information flow between knowledge-based models and shape grammars for generation of building designs, explaining the interaction, system and implementation. The benefit for using the interactive system is that the complementary properties of the two schemes are used to strengthen the overall process. Shape grammar contains rules about the geometric organization, while knowledge-based model supports the contextual information.

Go to article

Information Technology And Architectural Practice: Knowledge Modeling Approach And Bim, Ajla Aksamija, Mir Ali Dec 2007

Information Technology And Architectural Practice: Knowledge Modeling Approach And Bim, Ajla Aksamija, Mir Ali

Ajla Aksamija

This paper presents recent developments in information technologies and their impact on architectural design. It presents a practical technique for knowledge-based information modeling extending the currently prevailing Building Information Modelling (BIM) to include information beyond the building elements, and to foster analysis during the design process. Interactive web-based application for information discovery and design analysis is discussed as a case study. The application integrates several aspects of the early schematic design, and is intended for demonstration of integrated design factors.

Go to article

Emerging Technologies And Sustainability Practices In Architecture: Aiming For Zero-Energy Buildings, Ajla Aksamija, Mir Ali Dec 2006

Emerging Technologies And Sustainability Practices In Architecture: Aiming For Zero-Energy Buildings, Ajla Aksamija, Mir Ali

Ajla Aksamija

New developments in materials, information technology, and sustainability are changing the built environment. Smart materials, sustainable materials, integration methods—these are the current opportunities for architects, engineers and planners that result in new types of architectural artifacts. This paper discusses with illustrative examples the recent technological advancements and innovations in the design and construction of buildings, focusing on the intelligent systems, sustainability, and zero-energy buildings. Smart materials are materials that exhibit enhanced properties, and are able to respond to the changes in the environment. Sustainable architecture is environmentally conscious, saves energy and utilizes renewable materials and systems. Zero-energy design aims to …

Go to article