Austrian Energy Agency Definition of average buildings use for the building stock model Austria International Expert Workshop Building Typologies Maria Amtmann Austrian Energy Agency 1 März 2012 Seite 1
BASIC ACTIVITES TO DEVELOP THE AUSTRIAN TYPOLOGY! before TABULA started in May 2009 no common typology existing! Analysis of building data - combine several existing data sources - definition of the geometrical / energetic characteristics! Analysis of supply system data - definition of the heating system typology - definition of the domestic hot water typology FOTO ALEVENTURA/ PHOTOALTO! Analysis of data on the frequency of buildings and system types Austrian Energy Agency 1 März 2012 Seite 2
THE TWO BASIC PARAMETERS! The building size is defined in the four categories SFH Single-family houses (1-2 dwellings) TH Terraced houses MFH Multi-family houses (3-10 dwellings) AB Apartment blocks (11- dwellings)! The construction periods: Combination of national (architectural) history and national building statistics. I up to 1918 II 1919 44 III 1945 60 IV 1961 80 V 1981 90 VI 1991 00 VII 2001 10 SFH TH MFH AB Austrian Energy Agency 1 März 2012 Seite 3
THE AUSTRIAN BUILDING TYPOLOGY The building type matrix:! 28 basic reference buildings 4 sizes, 7 construction period -> National Brochure! Five systems per building: heating and domestic hot water combined or not combined -> TABULA webtool! Definition of further parameters: Construction elements, geometry of building, environment, age and kind of technical systems, already implemented refurbishment measures,.. Austrian Energy Agency 1 März 2012 Seite 4
THE METHODODICAL APROACH! Possible Approaches to choose typical building : (1) Example Buildings (data of an existing building) (2) Synthetic representative Building (virtual building) (3) Average representative Building (existing building corresponding to statistical data)! Average representative Buildings: Top-down: existing information from all regions and out of literature (definition criteria by cross floor area, heating demand and u- value) Bottom-up: Extract of Reference buildings out of the energy certificate database Austrian Energy Agency 1 März 2012 Seite 5
ZEUS EPC DATABASE! ZEUS implemented in three of nine provinces of Austria! EPCs calculated via offline software programs! electronic interfaces for automated data transfer! combine collection data - administrative purpose - simplified application for local subsidies - online archive - administration of subsidies - automated checks of plausibility for subsidies! target group: consultants (access via secure link) Austrian Energy Agency 1 März 2012 Seite 6
EPC DATABASE EXPORT (1) Export of EPC data! made anonymous! about 40. 000 EPCs! residential buildings: 93%! Build. stock/ refurbished 60/ 40 %! extract 56 representative EPCs Apartment blocks Multy family houses Single family houses Fig: Quantities residential buildings in EPC database per construction period and building category Austrian Energy Agency 1 März 2012 Seite 7
EVALUATION PROCESS- AVERAGE VALUES OF DIFFERENT PARAMETERS (2) Analysis of EPC raw data Construction period I II III IV V VI VII -1918 1919-44 1945-60 1961-80 1980-90 1991-00 2001-10 SFH Single-family house Living area [m²] 125-155 110-140 110-140 125-155 140-170 145-175 145-175 Heating demand [kwh/ m²a] 180-300 200-370 160-380 145-280 100-190 80-130 10-100 U-value [W/(m²K)] 1.0-1.8 1.1-1.45 1.0-1.2 0.6-0.85 0.35-0.8 0.3-0.7 0.2-0.6 MFH Multi-family house/ TH Terraced house Living area [m²] 400-800 280-680 280-680 400-800 400-800 350-750 350-750 Heating demand [kwh/ m²a] 130-230 140-270 150-270 100-205 80-140 60-100 10-80 U-value [W/(m²K)] 1.0-1.8 1.1-1.45 1.0-1.2 0.6-0.85 0.35-0.8 0.3-0.7 0.2-0.6 AB Apartment blocks Living area [m²] >800 >700 >700 >800 >800 >800 >800 Heating demand [kwh/ m²a] 120-220 130-260 130-260 90-190 70-130 50-100 10-80 U-value [W/(m²K)] 0.9-1.7 1.0-1.4 0.9-1.1 0.5-0.8 0.35-0.75 0.3-0.7 0.2-0.6 Austrian Energy Agency 1 März 2012 Seite 8
EPC DATABASE EVALUATION PROCESS (3) Consolidate data stock Identify available EPCs before and after the refurbishment of the building Evaluate IDs and investigation of XML data for quality purposes (4) Identify relevant IDs of EPCs for further investigations Identification of relevant buildings based on reference information (5) Extract all Data of identified EPC Some data information, especially the exact data of the building elements, can only be taken out of the stored PDF file Austrian Energy Agency 1 März 2012 Seite 9
EPC DATABASE EVALUATION PROCESS Evaluation EPC data: Comparison of heating demand of analysed EPC data (green bar) with reference data: before and after refurbishment measures Heating demand [kwh/m²a] 300 After refurbishment 250 200 150 100 50 0 I II III IV V VI VII Construction periods Austrian Energy Agency 1 März 2012 Seite 10
NATIONAL ENERGY BALANCES! Statistic data by the Austrian Statistical Office - number of buildings and the living area sorted according to building periods! Distribution of the national final energy demand per construction period! The national final energy consumption for the sector space heating and domestic hot water: 61,508 GWh ( servicefactor 0.65 [compare Skopetz, H.]) before 1919 1920-1944 1945-1960 1961-1980 1981-1990 1991-2000 2000-2010 Austrian Energy Agency 1 März 2012 Seite 11
NATIONAL ENERGY BALANCES! Final energy reduction potentials scenario of possible national final energy demand reduction potentials (in TWh) per construction period and building category 20 Building stock Standard refurbishment Advanced refurbishment 15 10 5-1919 1920-44 1945-60 1961-80 1981-90 Austrian Energy Agency 1 März 2012 Seite 12
NATIONAL BUILDING TYPOLOGY BROCHURE 28 reference buildings:! U - values! Construction sketches! Heating demand! Final energy! CO2 emission! common supply systems! Refurbishment measures! Primary energy and CO2 emission reduction Austrian Energy Agency 1 März 2012 Seite 13
EUROPEAN WEBTOOL 140 reference buildings:! U - values! Construction sketches! Heating demand! Final energy! CO2 emission! choose 5 different supply systems! Refurbishment measures! Primary energy and CO2 emission reduction Austrian Energy Agency 1 März 2012 Seite 14
CONCLUSIONS! The Austrian Typology: combination of EPC data information out of database with reference sources and the national statistical data for buildings and dwellings Energy certificate database future improvements:! organizational: collaboration among provinces! risk management: standardized automatic checks! innovation/ maintaince: wider availability for faster market penetration and feedback procedures! usability: make transfer of XML data into EPC calculation program possible! technical: one data standard, same data collection interface. For national evaluations or investigation projects precise information has to be stored in the XML version (geometries, orientation etc.) Austrian Energy Agency 1 März 2012 Seite 15
Thanks for your attention! maria.amtmann@energyagency.at http://www.energyagency.at/ gebaeude-raumwaerme/ aktuelle-projekte/ tabula www.building-typology.eu Austrian Energy Agency 1 März 2012 Seite 16