Overhang Design Methods
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Overhang Design Methods
It is estimated that windows in office buildings are responsible for one third of energy used for their heating and cooling. Designing window shading that balances often contradictory goals of preventing excessive heat gains in hot periods, without compromising beneficial heat gains in cold periods or visual comfort in indoor spaces of modern buildings with highly glazed facades, is an interesting multi-objective optimisation problem that represents an active research topic in the field of building energy and daylighting. Window overhangs are the simplest and most traditional shading devices that are easy to install, highly cost-effective, require low or no maintenance and offer unobstructed views outside. This book provides a review of overhang design methods for optimal thermal and daylighting performance. It starts with a historical overview of methods based on solar positions and shading masks. Next it discusses current research methodology, including shading calculation methods, ways of quantifying thermal and daylighting overhang effectiveness and the use of multi-objective optimisation approaches, together with the case studies that employ them. It further covers methods for designing innovative overhang types such as NURBS outlined overhangs and PV integrated dynamic overhangs. The appendix classifies published overhang case studies according to major climate type and latitude of their locations. As such, the book presents a valuable resource for understanding subtle nuances of interaction between solar radiation, shading devices and indoor comfort. The intended target audience are building energy researchers interested in optimisation of window shading devices.
Shade Overhang Efficiency
Shade Overhang Efficiency explores the crucial role of overhangs in sustainable building design, focusing on their ability to reduce solar heat gain and improve building comfort. The book emphasizes that strategically designed overhangs are not just aesthetic features but essential components of passive solar design, offering a cost-effective way to lower cooling costs. It delves into solar geometry, explaining how the sun's position affects building energy performance, and examines the impact of different building materials on overhang efficiency. The book progresses from theory to practical application, starting with fundamental concepts of solar radiation and heat transfer. It then examines design considerations like latitude, orientation, and overhang depth, using case studies and simulations to demonstrate optimization for various climates. Readers will discover how different overhang types, such as horizontal, vertical, and angled designs, can be implemented. The book concludes with real-world examples of buildings successfully using overhangs for significant energy savings, making it a valuable resource for architects, engineers, and anyone interested in sustainable building practices.
Digitalization of design for support structures in laser powder bed fusion of metals
Additive manufacturing is considered a key technology for digital production. However, several barriers towards the broad industrial application exist, e.g. the associated cost and the required experience regarding the manufacturing process. To eradicate these barriers, the complete digitalization of the value creation process is needed. In this thesis, a digital, automated support structuredesign procedure is developed. Topology optimization is used for design rule determination, and the space colonization algorithm is adapted for the automated design. The validity of the procedure is proven experimentally, revealing sufficient mechanical performance alongside cost reduction at medium to large production scales.