S U S T A I N A B L E U R B A N A R E A S 33 Actual energy consumption in dwellings The effect of energy performance regulations and occupant behaviour Olivia Guerra Santín Delft Centre for Sustainable Urban Areas Delft University of Technology Delft University of Technology Actual energy consumption in dwellings The effect of energy performance regulations and occupant behaviour PROEFSCHRIFT ter verkrijging van de graad van doctor aan de Technische Universiteit Delft, op gezag van de Rector Magnificus prof. ir. K.Ch.A.M. Luyben, voorzitter van het College voor Promoties, in het openbaar te verdedigen op dinsdag 19 oktober 2010 om 15.00 uur door Olivia GUERRA SANTÍN Master of Science in Urban Environmental Management, Wageningen University, geboren te Toluca, Mexico Dit proefschrift is goedgekeurd door de promotor: Prof. dr. ir. H.J. Visscher, Copromotor dr L.C.M. Itard Samenstelling promotiecommissie: Rector Magnificus, voorzitter Prof. dr. ir. H.J. Visscher, Technische Universiteit Delft, promotor Dr. L.C.M. Itard, Technische Universiteit Delft, copromotor Prof. dr. ir. J.D.M. van Hal, Technische Universiteit Delft Prof. dr. ir. M.G. Elsinga, Technische Universiteit Delft Prof. dr. D.V. Keyson, Technische Universiteit Delft Prof. dr. ir. J.L.M. Hensen, Technische Universiteit Eindhoven Prof. dr. E.M. Steg, Rijksuniversiteit Groningen Actual energy consumption in dwellings The effect of energy performance regulations and occupant behaviour Olivia Guerra Santín The series Sustainable Urban Areas is published by IOS Press under the imprint Delft University Press IOS Press BV Nieuwe Hemweg 6b 1013 BG Amsterdam The Netherlands Fax +31 20 6870019 E-mail: [email protected] Sustainable Urban Areas is edited by Delft Centre for Sustainable Urban Areas C/o OTB Research Institute for the built environment Delft University of Technology Jaffalaan 9 2628 BX Delft The Netherlands Phone +31 15 2783005 Fax +31 15 2784422 E-mail [email protected] http://www.otb.tudelft.nl Design: Cyril Strijdonk Ontwerpburo, Gaarnderen; dtp: Yvonne Alkemade and Itziar Lasa Printed in the Netherlands by: Haveka, Alblasserdam ISSN 1574-6410; 33 (print) SBN 978-1-60750-650-8 (print) ISSN 1879-8330; 33 (online) ISBN 978-1-60750-651-5 (online) NUR 755 Legal notice The publisher is not responsible for the use which might be made of the fol- lowing information. Copyright 2010 by Olivia Guerra Santín No part of this book may be reproduced in any form by print, photoprint, mi- crofilm or any other means, without written permission from the copyright- holder. Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 1.1 Energy conservation in residential buildings..............3 1.2 Background .........................................4 1.3 Problem definition ...................................6 1.4 Aim of the study......................................8 1.5 Research questions ...................................8 1.6 Research methods ...................................10 1.7 Data ...............................................10 1.8 Relationship between research questions and data .......16 1.9 Limitations .........................................17 1.10 Structure of thesis ...................................19 References..........................................21 2 The effect of occupancy and building characteristics on energy use for space and water heating in Dutch residential stock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 Guerra-Santin, O., L. Itard & H. Visscher (2009), Energy and Buildings, 41, pp. 1223-1232. 2.1 Introduction ........................................27 2.2 State of the art ......................................29 2.2.1 Household characteristics ............................30 2.2.2 Behaviour ..........................................31 2.3 Data and analysis methods ...........................32 2.3.1 Transformed variables ...............................34 2.3.2 Missing data and univariate outliers ...................34 2.4 Results ............................................35 2.4.1 Differences in energy use per type of dwelling and insulation level .....................................35 2.4.2 Results of analysis of variance ........................35 2.4.3 Regression model for prediction of energy use for space and water heating ...................................38 2.4.4 Prediction of energy use for heating according to individual building characteristics and occupant behaviour .........43 2.4.5 Second regression model .............................45 2.5 Discussion .........................................47 2.6 Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 References..........................................50 3 The effect of energy performance regulations on energy consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57 3.1 Introduction ........................................57 3.2 Data and methodology ...............................59 3.2.1 Districts............................................60 3.2.2 Energy consumption .................................60 3.2.3 EPC calculation......................................62 3.2.4 Methods of analysis..................................63 3.3 Results.............................................65 3.3.1 Differences in the energy consumption for space and water heating for different EPC values and types of dwelling.....65 3.3.2 Real and predicted energy consumption.................68 3.3.3 Effect of thermal quality on energy consumption in dwellings...........................................70 3.4 Validation of the results with a nationwide survey (WoON database)...........................................72 3.4.1 Relationship between energy indicators and energy consumption (WoON database) ........................73 3.4.2 Relationship between building characteristics and energy consumption (WoON database) ........................74 3.5 Discussion..........................................76 3.5.1 Relationship between the Energy Performance Coefficient and actual energy consumption........................76 3.5.2 Actual and expected energy consumption . . . . . . . . . . . . . . . 76 3.5.3 Relationship between building characteristics and energy consumption........................................77 3.6 Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 3.7 Recommendations for policy and practice . . . . . . . . . . . . . . . 79 References..........................................80 4 Occupants’ behaviour Determinants and effects on residential heating consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85 Guerra-Santin, O. & L Itard (2010), Building Research & Information, 38 (3), pp. 318-338. 4.1 Introduction ........................................85 4.2 Data and methodology ...............................88 4.2.1 Building characteristics...............................89 4.2.2 Household characteristics.............................89 4.2.3 Occupants’ behaviour ................................90 4.2.4 Energy consumption .................................91 4.3 Results: analysis of OTB survey ........................94 4.3.1 Reported behaviour ..................................94 4.3.2 Effect of occupant behaviour on energy use..............96 4.3.3 Determinants of the use of heating and ventilation systems ............................................98 4.4 Comparison with WoON database ....................103 4.4.1 Effect of behaviour on energy use (WoON survey)........103 4.4.2 Determinants on the use of heating and ventilation behaviour (WoON survey) ............................106 4.4.3 Relationship between household characteristics and occupant behaviour (WoON survey)....................109 4.5 Discussion.........................................110 4.5.1 Effect of occupants’ behaviour on energy use ...........110 4.5.2 Regression model...................................112 4.5.3 Determinants of behaviour: type of heating control ventilation and household characteristics ..............112 4.6 Conclusions........................................113 4.6.1 Occupant behaviour and energy consumption ..........113 4.6.2 Methodology.......................................115 4.6.3 Recommendations for policy and practice . . . . . . . . . . . . . . 115 4.6.4 Recommendations for further research ................116 References.........................................116 5 Behavioural patterns related to energy consumption for heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123 5.1 Introduction .......................................123 5.2 State of the art .....................................124 5.3 Methodology and data...............................126 5.3.1 Approach..........................................126 5.3.2 Research data......................................128 5.3.3 Building characteristics..............................128 5.3.4 Household characteristics............................130 5.3.5 Occupant behaviour.................................130 5.4 Results............................................131 5.4.1 Effects of occupant behaviour on energy consumption ...132 5.4.2 Factors underlying behaviour: exploratory factor analysis ...........................................133 5.4.3 Behavioural patterns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 5.4.4 Household types: differences in behavioural patterns and energy consumption ................................137 5.4.5 Relationship between behavioural patterns and user profiles............................................138 5.4.6 Relationship between behavioural patterns, user profiles and energy use..............................140 5.5 Discussion and conclusions ..........................141 5.6 Recommendations .................................143 References.........................................144 6 Occupant behaviour in dwellings with improved thermal characteristics . Evidence of a rebound effect . . . . . . . . . . . . . . . . . . . . . . .151 6.1 Introduction .......................................151 6.2 Effect of occupant behaviour and building characteristics on energy consumption..............................152 6.3 Data and methodology ..............................154 6.4 Results............................................156 6.4.1 Variations in energy consumption in dwellings built in different construction periods ........................156 6.4.2 Effect of building characteristics on energy consumption: do better thermal properties and systems efficiency lead to reductions in energy consumption? .................157 6.4.3 Effect of occupant behaviour on energy consumption: determining the main factors of occupant behaviour.....160 6.4.4 Effect of building characteristics on heating behaviour ...163 6.4.5 Effect of building characteristics on ventilation behaviour 165 6.5 Discussion and conclusions ..........................166 6.5.1 Rebound effect on energy consumption in the Dutch residential stock ...................................167 6.5.2 Differences in behaviour determined by building characteristics .....................................167 6.6 Recommendations .................................168 References.........................................169 7 Conclusions and recommendations . . . . . . . . . . . . . . . . .175 7.1 Introduction .......................................175 7.2 Effect of energy performance regulations on actual energy consumption.......................................177 7.3 Effect and determinants of occupant behaviour in actual energy consumption for heating ......................180 7.4 Determinants of energy consumption in recently built housing in comparison to the complete housing stock ...184 7.5 Data collection: limitations and recommendations ......186 7.6 Recommendations..................................188 7.6.1 Recommendations for policy .........................189 7.6.2 Recommendations for practice .......................191 7.6.3 Recommendations for further research ................191 7.7 Closing remarks ....................................192 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .193 Samenvatting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .201 Appendix 1 EPC calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .209 Appendix 2 OTB Survey questionnaire . . . . . . . . . . . . . . . . . . . . . . . . .211 Appendix 3 Regression analysis (complete sample in the WoON data- base) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .235 Curriculum vitae . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .237
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