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Advanced Building Skins [16] L. T. M. Blessing and A. Chakrabarti, DRM, a Design Research Methodology, no. 30. Springer, 2009, pp. 28-31. [17] E. Voss, Q. Jin, and M. Overend, “A BPMN-Based Process Map for the Design, Construction and Operation of Facades, CUED Technical Report: CUED-STRUCT/TR.239,” 2012. [18] E. Voss, M. Overend, and W. Stevens, “A Building Information Modelling-Based Tool for Heuristically Assessing Façade Manufacturability,” 2012. - 10 -
Prof. Dr.nat.techn. Oliver Englhardt Institute of Building Construction Graz University of Technology Copyright © with the authors. All rights reserved. Summary Individual Glass Solutions for Modern Building Skins Frank Schneider, Dr.-Ing., Director R&D OKALUX GmbH, Germany, info@okalux.de, www.okalux.de Today glass often plays a central part in the design of building skins. Therefore demands on such glazing become progressively complex and manifold. Depending on the respective environment, the occupancy and other relevant parameters individual solutions have to be developed. To optimize energy consumption of the façade, the insulating capacity, the sun protection and the solar energy transmittance have to be adjusted carefully according to particular boundary conditions. Translucent insulating materials (TIM), various systems for sun and energy control and individual design inserts allow a wide range of innovative possibilities for green buildings of the future. Keywords: Insulating Glass, Sun Control, Energy Consideration, Individual Design 1 Introduction Rising energy standards and peoples growing ecological awareness in terms of energy consumption and CO2 emissions require new developments in the field of the building´s services facilities as well as the building´s façade. Nevertheless, today the technical limits in the field of the Thermal Insulation are very limited. Improvements may be achieved by exotic materials like translucent Silica-Aerogels [1]. Such nanoporous granulates prevent convection and conduction within the gas phase. Thus, an Insulation Glass Unit filled with such a material achieves a thermal transmittance of U < 0.3 W/(m²K). Evacuated glass units may once achieve even lower values. But a durable vacuum insulating unit with such U-values is not available at the moment due to various technical problems of keeping the vacuum durable. Hence, a key development in the field of thermal insulation is very limited. Therefore, it is more effective to taken the thermal and solar parameters into account to optimize the building´s overall energy consumption. Even with an excellent thermal insulation glass buildings tend to overheat during the summer. Considering the fact, that cooling a room by air-conditioning requires approximately double the energy than rising the temperature about the same value, it is often more effective to design a suitable shading system than to reduce the thermal insulation to some percentages. The physical properties, especially the Insulating Capacity, the Visual Light Transmittance and the Total Solar Energy Transmittance have to be fitted carefully, depending on the individual boundary conditions to achieve an optimal performance. Beside solar-control coatings, integrated blinds or metal meshes with optical properties can be used to obtain the required shading coefficient. In addition, such solutions create an individual design of the buildings envelope. As the technical parameters of the Insulating Glass Units often do not differ much, such design issues become more and more important. - 1 -
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advanced building skins 14 | 15 Jun
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Editorial advanced building skins -
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ABS_07 Lucio Blandini Timo Schmidt
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Prof. Dr.nat.techn. Oliver Englhard
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Advanced Building Skins Figure 3: A
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2.2 Geometrical Processing Advanced
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3 Digital Data Advanced Building Sk
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4 References Advanced Building Skin
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2.1 Maintenance Advanced Building S
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4.2 Fire Protection Advanced Buildi
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7 Acknowledgements Advanced Buildin
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2 Cable-Stayed Glass Façade Advanc
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