RESEARCH ARTICLE

Double criterion optimisation of transparent façades based on solar thermal processes

  • Marcin Janicki ,
  • Dariusz Heim
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  • Department of Heat and Mass Transfer, Lodz University of Technology, Lodz 90-924, Poland

Published date: 05 Mar 2013

Copyright

2014 This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

This work aimed to find the best possible solution for transparent façades. The evaluation was formulated to assure the highest user comfort criteria corresponding to energy efficiency—two criterion optimisation. The analyses were based on BESTEST, south-oriented zone geometry. Computer model was designed using Finite Control Volume Techniques with assumptions for applied materials and specified boundary conditions, plus reference year for energy calculation (WYEC2). The natural ventilation façade system was designed to determine airflow network inside thefaçade. The adjustable size of openings(inlets and outlets)was selected at the level of 80% for the cold season and totally closed during the hot season. Environmental parameters for thermal comfort evaluation were: zone resultant temperature and solar radiation in zone space. Energy efficiency was assessed based on heat flux between the zone with controlled temperature and external environment. Results showed that well selected design of buffer zone section could improve energy efficiency of adjacent zones for both winter and summer periods. The most profitable Double Skin façade solutionis DGC (double glazing with lowe coating) combined with single glazing with internal blinds (SGB) or coloured glazing.

Cite this article

Marcin Janicki , Dariusz Heim . Double criterion optimisation of transparent façades based on solar thermal processes[J]. Frontiers of Architectural Research, 2013 , 2(1) : 23 -29 . DOI: 10.1016/j.foar.2012.11.005

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