1. "Energy renovation and occupant behaviour: towards a correct prediction of real energy savings in dwellings” (FEA-PhD-symp. 05/12/2012) Marc Delghust 1 Energy renovation and occupant behaviour: towards a correct prediction of real energy savings in dwellings Marc Delghust marc.delghust@ugent.be --- Research group on Building Physics, Construction & Climate Control Department of Architecture & Urban Planning (va&s) // Faculty of Engineering and Architecture Ghent University (UGent) VITO Ph.D.-Fellow, FWO-VITO-scholarship ( Prof. A. Janssens [UGent], Yves Deweerdt [Vito] )

2. "Energy renovation and occupant behaviour: towards a correct prediction of real energy savings in dwellings” (FEA-PhD-symp. 05/12/2012) Marc Delghust [background – problem ] ENERGY USE in DWELLINGS EPB … EPC... EAP Standardised calculation models Very fast calculation Ease of use... widely spread, used, known + compulsory

3. "Energy renovation and occupant behaviour: towards a correct prediction of real energy savings in dwellings” (FEA-PhD-symp. 05/12/2012) Marc Delghust 3 boundary conditions 3.exterior 4.interior CALCULATED ENERGY USE building 1.envelope 2.techniques 1 3 4 2 default values + detailed overrides standardized average ! interacting user behaviour ! qualitative quantitative √X default values standardized average [ background – problem]

4. "Energy renovation and occupant behaviour: towards a correct prediction of real energy savings in dwellings” (FEA-PhD-symp. 05/12/2012) Marc Delghust 4 theoretical gain real gain ? energy use: heating [ background – problem] ? ?

5. "Energy renovation and occupant behaviour: towards a correct prediction of real energy savings in dwellings” (FEA-PhD-symp. 05/12/2012) Marc Delghust a comprehensive approach on complementary case-studies 5 buildings users performance measurements surveys models reality

6. "Energy renovation and occupant behaviour: towards a correct prediction of real energy savings in dwellings” (FEA-PhD-symp. 05/12/2012) Marc Delghust a comprehensive approach on complementary case-studies 6 Different houses: clusters of nearly identical houses different clusters: neighbourhoods buildingsusers Different households within a neighbourhood between neighbourhoods

7. "Energy renovation and occupant behaviour: towards a correct prediction of real energy savings in dwellings” (FEA-PhD-symp. 05/12/2012) Marc Delghust 7 [building – user – performance ] different houses measurements

8. "Energy renovation and occupant behaviour: towards a correct prediction of real energy savings in dwellings” (FEA-PhD-symp. 05/12/2012) Marc Delghust different ways of living and thinking Who? households & individuals How? use & interaction Happy? appreciation & aspirations Why? Do they know?... What if? [ building – user – performance ] surveys 8

9. "Energy renovation and occupant behaviour: towards a correct prediction of real energy savings in dwellings” (FEA-PhD-symp. 05/12/2012) Marc Delghust Probability of opening a window surveys [ building – user – performance ] 9 Probability of heating user + building = interaction in space & time

10. "Energy renovation and occupant behaviour: towards a correct prediction of real energy savings in dwellings” (FEA-PhD-symp. 05/12/2012) Marc Delghust 10 ++ [building + user = performance]

11. "Energy renovation and occupant behaviour: towards a correct prediction of real energy savings in dwellings” (FEA-PhD-symp. 05/12/2012) Marc Delghust [conclusions & challenges] 11 importance of user behaviour … but don’t blame the user for everything complex human beings comfort expectation living interaction evolving reality … models: uncertainties: model + input applicability: label <> real energy use practicality: work + calculation time, … validation: different houses & users

12. "Energy renovation and occupant behaviour: towards a correct prediction of real energy savings in dwellings” (FEA-PhD-symp. 05/12/2012) Marc Delghust Energy renovation and occupant behaviour: towards a correct prediction of real energy savings in dwellings Marc Delghust marc.delghust@ugent.be --- Research group on Building Physics, Construction & Climate Control Department of Architecture & Urban Planning (va&s) // Faculty of Engineering and Architecture Ghent University (UGent) Ph.D.-Fellow, FWO-VITO-scholarship ( Prof. A. Janssens [UGent], Yves Deweerdt [Vito] ) 12