Influence of the building shape on the energy performance of timber-glass buildings in different climatic conditions

Designing timber-frame houses with enlarged glazing mostly placed on the south side of the building offers numerous possibilities of creating structures with a highly attractive shape. Nevertheless, some general design guidelines claim that a non-compact building shape usually results in the increased energy demand for heating, [1]. The aim of the present research therefore is to demonstrate possible avoidance of the latter energy related problem. The research is based on a case study of a one-storey timber-frame house, taking into account the climate data for three different European cities, those of Ljubljana, Munich (Muenchen) and Helsinki, whose average annual temperature and solar potential differ significantly. Apart from the climate data, the main variable parameters are the building's shape factor (Fs) and the AGAW (glazing-to-wall area ratios) in the south facade of the building. With the ground floor area and the heated volume remaining constant, the parametric analysis is carried out for different building shapes, i.e. square, rectangular, L, T and U, with the three-layer insulating glass placed in the south facade only. The results point out that the total annual energy demand for heating and cooling depends on the increasing shape factor to a considerably higher extent in cold climate conditions with a lower solar potential (Helsinki). On the other hand, the analysis of the regions with a higher average annual temperature (Ljubljana) and solar potential in the heating period shows that the influence of highly attractive building shapes on the energy demand is evidently less important, especially when using the appropriate size and position of the insulating glazing.

[1]  Jae-Weon Jeong,et al.  Thermal characteristic prediction models for a free-form building in various climate zones , 2013 .

[2]  Miroslav Premrov,et al.  Economical optimization of energy-efficient timber buildings: Case study for single family timber house in Slovenia , 2014 .

[3]  A.L.S. Chan,et al.  Investigation on the appropriate floor level of residential building for installing balcony, from a view point of energy and environmental performance. A case study in subtropical Hong Kong , 2015 .

[4]  J. Virgone,et al.  Design of buildings shape and energetic consumption , 2001 .

[5]  Miroslav Premrov,et al.  Energy- efficient Timber - glass houses , 2013 .

[6]  Mehlika Inanici,et al.  Thermal performance optimization of building aspect ratio and south window size in five cities having different climatic characteristics of Turkey , 2000 .

[7]  P. Fazio,et al.  Parametric investigation of geometric form effects on solar potential of housing units , 2011 .

[8]  Brian Vad Mathiesen,et al.  Energy system analysis of 100% renewable energy systems-The case of Denmark in years 2030 and 2050 , 2009 .

[9]  Chiheb Bouden Influence of glass curtain walls on the building thermal energy consumption under Tunisian climatic conditions : The case of administrative buildings , 2007 .

[10]  Rossano Albatici,et al.  Bioclimatic design of buildings considering heating requirements in Italian climatic conditions. A s , 2011 .

[11]  Ahmed Al-Salaymeh,et al.  Influence of windows on the energy balance of apartment buildings in Amman , 2010 .

[12]  Maria Wall,et al.  Influence of window size on the energy balance of low energy houses , 2006 .

[13]  Jan Wurm,et al.  Glass Structures: Design and Construction of Self-Supporting Skins , 2007 .

[14]  Abdul-Ghani Olabi,et al.  100% sustainable energy , 2014 .

[15]  Brian Ford,et al.  The Passivhaus standard in European warm climates: design guidelines for comfortable low energy homes , 2007 .

[16]  Yusuf Yildiz,et al.  Identification of the building parameters that influence heating and cooling energy loads for apartm , 2011 .

[17]  Moncef Krarti,et al.  Impact of building shape on thermal performance of office buildings in Kuwait , 2009 .

[18]  Miroslav Premrov,et al.  An approach in architectural design of energy-efficient timber buildings with a focus on the optimal , 2011 .

[19]  Daniel D. Chiras,et al.  The Solar House: Passive Heating and Cooling , 2002 .

[20]  Shuai Deng,et al.  How to evaluate performance of net zero energy building – A literature research , 2014 .

[21]  Arild Gustavsen,et al.  State-of-the-Art Highly Insulating Window Frames - Research and Market Review , 2008 .

[22]  Brian Vad Mathiesen,et al.  The role of district heating in future renewable energy systems , 2010 .

[23]  Carlos Ernesto Ochoa,et al.  Simulation-based method to determine climatic energy strategies of an adaptable building retrofit façade system , 2014 .

[24]  S. N. Garg,et al.  Energy rating of different glazings for Indian climates , 2009 .

[25]  S. Szokolay,et al.  Introduction to Architectural Science: The Basis of Sustainable Design , 2004 .

[26]  Evangelos Grigoroudis,et al.  A multi-objective decision model for the improvement of energy efficiency in buildings , 2010 .

[27]  Raphael Barry Sustainable Building Design with Autodesk Ecotect , 2011 .

[28]  Abdul-Ghani Olabi,et al.  State of the art on renewable and sustainable energy , 2013 .