Energy Performance Certification of Faculty Buildings in Spain: The gap between estimated and real energy consumption

A systematic method has been established to perform and analyse in detail the Energy Performance Certification of 21 Faculty Buildings located at the University of Zaragoza (Spain), according to the transposition of Directive 2010/31/EU. First of all, the problem background and a review of the state-of-the-art of the energy certification in buildings is outlined, regarding both the actual state of the Government regulations and the studies undertaken in several countries to assess the energy performance of different types of buildings, residential and non-residential. A summary of the causes found in other studies for the discrepancies between the estimated (by simulation) and actual energy consumption is shown which is afterwards tested and compared with the results found in the present study. Thereafter, the method followed to undertake the buildings’ Energy Performance Certification is explained, and the main results found together with the discussion are detailed, comparing actual vs. estimated energy consumption in the different case studies and proposing reasons for these deviations. The energy consumption breakdown by uses for several buildings is also analysed, and potential improvements for the simulation software are assessed.

[1]  Adrian Leaman,et al.  Assessing building performance in use 1: the Probe process , 2001 .

[2]  P. Nunes.  Towards a European Strategy for the security of energy supply , 2002 .

[3]  Danny H.W. Li,et al.  Electricity use characteristics of purpose-built office buildings in subtropical climates , 2004 .

[4]  K. Lomas.  The U.K. applicability study: an evaluation of thermal simulation programs for passive solar house design , 1996 .

[5]  Reinhard Haas,et al.  The rebound effect for space heating Empirical evidence from Austria , 2000 .

[6]  Charles Culp,et al.  Uncalibrated Building Energy Simulation Modeling Results , 2006 .

[7]  Rokia Raslan,et al.  Results variability in accredited building energy performance compliance demonstration software in the UK: an inter-model comparative study , 2010 .

[8]  Kristian Fabbri,et al.  A Round Robin Test for buildings energy performance in Italy , 2010 .

[9]  Sean Armstrong,et al.  A Cost-Optimal Assessment of Buildings in Ireland Using Directive 2010/31/EU of the Energy Performance of Buildings Recast , 2014 .

[10]  Enrico Fabrizio,et al.  Integrated HVAC and DHW production systems for Zero Energy Buildings , 2014 .

[11]  Siaw Kiang Chou,et al.  A performance-based method for energy efficiency improvement of buildings , 2011 .

[12]  Amrita Dasgupta,et al.  Operational versus designed performance of low carbon schools in England: Bridging a credibility gap , 2011, HVAC&R Research.

[13]  Antonio Valero,et al.  Methodological aspects and design implications to achieve life cycle low emission buildings . A case study : LCA of a new university building * , 2013 .

[14]  S. Sorrell,et al.  Empirical estimates of the direct rebound effect: A review , 2009 .

[15]  Christian Anker Hviid,et al.  The European Energy Performance of Buildings Directive: Comparison of calculated and actual energy use in a Danish office building , 2012 .

[16]  Antonio Pietro Francesco Andaloro,et al.  Energy certification of buildings: A comparative analysis of progress towards implementation in European countries , 2010 .

[17]  Bill Bordass,et al.  Making feedback and post-occupancy evaluation routine 2: Soft landings – involving design and building teams in improving performance , 2005 .

[18]  Adrian Leaman,et al.  Assessing building performance in use 3: energy performance of the Probe buildings , 2001 .

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

[20]  Dejan Mumovic,et al.  Towards measurement and verification of energy performance under the framework of the European directive for energy performance of buildings , 2014 .

[21]  Paul Ekins,et al.  The Macroeconomic Rebound Effect and the UK Economy , 2006 .

[22]  Eric Hirst,et al.  Indoor temperature changes in retrofit homes , 1985 .

[23]  Horace Herring,et al.  Energy efficiency—a critical view , 2006 .

[24]  Moncef Krarti,et al.  A simplified analysis method to predict the impact of shape on annual energy use for office buildings , 2007 .

[25]  Dino Bouchlaghem,et al.  Predicted vs. actual energy performance of non-domestic buildings: Using post-occupancy evaluation data to reduce the performance gap , 2012 .