Adaptive building envelopes of multistory buildings as an example of high performance building skins

Recently developed generation of high-performance skins greatly leads to the emersion of innovative manufactures integrating real-time environmental response, enhanced materials, dynamic automation with built in microprocessors, wireless sensors and actuators, and designfor-manufacture techniques. This application has basically alter the thinking way of architects in the early design stages of the building with a shifting in importance from form to performance, from structure to envelope. In the field of high-performance buildings, the envelope begins to be the setting of research and development. The aim of the paper is to discuss the design of three strategies used in constructing adaptive building envelopes of multistory buildings, integrating improved energy performance and architectural innovation, in order to Control the physical environmental factors (heat, light, sounds), as well as improving occupants' comfort. Finally, three case studies are analyzed to unveil the implementation of these strategies on constructing structures and study their effects on the building energy savings. Scope and objective: The objective of this paper is to illustrate and discuss new conceptual ways of designing adaptive building envelopes of multistory structures that respond to environmental changes in the surrounding climate of different places in the world, and how the usage of such adaptive envelopes can help reduce the energy consumption of the building. Methodology: The literature survey will first discuss the characteristics and properties of high performance facades. After that, the paper present and analyze existing examples and ideas of adaptive envelopes, gaining an overall understanding of the concept of three adaptive building envelopes. In addition, at the same time develop knowledge of the materials commonly used and how they perform. Finally, three case studies are presented to analyze the implementation of the three adaptive envelopes strategies and observe their effects on the building energy savings. (C) 2019 Production and hosting by Elsevier B.V. on behalf of Faculty of Engineering, Alexandria University.