Paper Conference

Proceedings of eSim 2014: 8th Conference of IBPSA-Canada


Dynamic commercial façades versus traditional construction energy performance and comparative analysis

Hui Shen, Athanasios Tzempelikos, Anna Maria Atzeri, Andrea Gasparella, Francesca Cappelletti

Abstract: Key parameters in studying the balance between the need for daylighting and view versus the need for controlling of solar gains, reducing energy use and maintaining human comfort are: (i) smart glazing products (ii) dynamic envelope components and (iii) lighting and HVAC controls. A typical office building with large perimeter zones is used as an example. The basic model has brick exterior walls with 20 % punched windows. A comparative analysis is performed for a more transparent envelope with dynamic systems including shading and lighting controls, for the climates of Chicago and Rome. An integrated, validated thermal-lighting model with flexible system controls is used to simulate complex façade operations for reducing glare problems while maximizing useful daylight. The results show that more transparent facades result in lower operational costs and source energy use, although total site energy use can be higher for heatingdominated climates.
Pages: 267 - 281