TABULA Building Typologies in the National Context of the Czech Republic
International Expert Workshop
"Energy Assessment of National
Housing Stocks ‐ Building Typologies"Wels, Austria 29.02.2012
SummaryThere has not been any specific approach recognized recently at the national level that could be used to evaluate the energy performance of large groups of buildings. Czech national building typology has been developed in the framework of TABULA project. Relevant datasets were included in TABULA tool offering multiple scenarios and facilitating the strategic asset management. This lecture is giving an overview of typical features of the Czech housing stock and showing examples of applications of TABULA methodology in the Czech national context.
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Sources of Data
Analysis of the Czech Housing Stock
Size and technology structure
Source of data: Czech Statistical Office, Public database VDB
Heating and DHW systemsNumber of dwellings
Heating systems
Centralized heating Space heating /local heating/
A B C D E F G HFuel Total
centralized heating
Central heating
Collective heating
District heating
Complementaryheating
Kitchen stoves
Stoves Open Fires
Total 3 489 122 1 931 195 386 680 1 171 248 32 522 73 220 812 772 61 461
Electricity 0 0 28 480 364 723
Gas 1 116 126 1 116 126 3 307 239 137
LPG 3 859 3 859 0 2 848
Heat 1 557 928 0 386 6801 171
248 0
Hard Coal 46 119 46 119 0 3 583 9 371
Coke 37 299 37 299 0 184 2 205
Wood 367 938 367 938 735 69 362 115 940 61 461Other Fuels 359 854 359 854 0 92 78 549
Source of data: ENERGO 2004
Age structure
Source of data: Czech Statistical Office, Public database VDB
Housing stock parametersHousing stock parameters::
Construction period
Until 1979 1979-85 1985-92 1992-02 Since 2002 LEH PH
Completed
dwellings
2927461 386199 324563 216746 122488 None None
SFH 1649756 172601 138748 112823 62649 None None
APT 1277705 213598 191605 169235 79735 None NoneEa average (kWh/m2/year) 280 220 195 170 120
50 15Ea SFH (kWh/m2/year) 300 200 180 150 130Ea MFH+AB (kWh/m2/year) 260 230 200 180 110Uwall 1,45-1,37 1,39-1,19 0,89-0,79 0,5 0,38-0,30 0,15 0,10-0,15
Uroof 0,89-0,83 0,93-0,79 0,51-0,43 0,41-0,36 0,3-0,24 0,12 0,10-0,12
Uceiling/cellar/ 0,47-0,43 0,47-0,43 0,47-0,43 0,34 0,3-0,24 0,12 0,10-0,12
Uwindow 2,9 2,9 2,9 1,8 1,7 1,20-0,80 0,80
Source of data: PORSENNA
Standard requirements
DECREE 148/2007
N.B. Red line is minimum energy performance requirement. All newly constructed buildings and major renovations must comply at least with class C and fulfill U values.
Unrefurbished Stock
Source of data: Panel Scan 2009, SFRB
Unrefurbished Stock
Source of data: Ekowatt
Definition of the Czech Building MatrixRegions
National building typology
Construction PeriodsBefore 19201921 – 1945 1946 – 1960 1961 – 1980 1994 –
Building CategoriesSingle Family House (SFH)Terraced House (TH)Multi‐family House (MFH)Apartment Block (AB)
Definition of the Czech Building Matrix
CZ.N.TH.01
CZ.N.TH.02
CZ.N.SFH.01
CZ.N.SFH.02
CZ.N.SFH.05
CZ.N.SFH.06
CZ.N.TH.05
CZ.N.TH.06
do roku 1920
1921‐1945
Řadový důmRodinný dům
1946‐1960
1961‐1980
SFH TH
CZ.N.TH.03
CZ.N.TH.04
CZ.N.SFH.03
CZ.N.SFH.04
1981‐1994
od roku 1994
CZ.N.AB.01
CZ.N.AB.02
CZ.N.MFH.05
CZ.N.MFH.06
CZ.N.AB.05
CZ.N.AB.06
do roku 1920
1921‐1945
CZ.N.MFH.01
CZ.N.MFH.02
Malý bytový dům Vícepodlažní dům
MFH AB
1946‐1960
1961‐1980
1981‐1994
od roku 1994
CZ.N.MFH.03
CZ.N.MFH.04
CZ.N.AB.03
CZ.N.AB.04
Typology Datasets
Construction ElementsRoofs and CeilingsFloorsWallsDoors and Windows
Refurbishment measures
Heating and Domestic Hot Water SystemsGeneration systemsStorage systemsDistribution systemsRefurbishment measures
Example: Roof TypologyTypical Period Description U‐Value
Before 1920 roofing tiles , battens, rafters, not insulated 2.60 1921‐1945 roofing tiles, battens rafters +cork or heraklit 1.64
roofing tiles, battens rafters +lignopor or heraklit 1.25 roofing tiles, battens rafters +glasswool thin insulation in the cavity 0.80 1946‐1960 warm flat roof 0.91 lightweight concrete slab 150mm + screed 30mm 0.85
1961‐1980 warm flat roof 0.57 double skin roof (cold flat roof) with ventilated air gap and thermal insulation 0.46
1981‐1994 double skin roof (cold flat roof) with ventilated air gap and thermal insulation 120 mm glass fibre
0.35
prefab concrete 250mm with thermal insulation 160mm 0.23 After 1994
concrete roof insulated with 140 mm of mineral fibre 0.32
Refurbishment MeasuresStandard level– adding ext, insulation, replacement of windows,
upper floor/roof insulation, cellar ceiling
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Fields of aplicationFields of aplication::
energy performance of existing buildings
refurbishment scenarios basic/advanced
energy saving potential
energy balance of large group of buildings /municipal, regional , national housing stock/
strategic asset management
National energy balanceNational energy balance::
SFH1 SFH2 SFH3 APT APT APT
1945 1946-1980 1981-2001 1945 1946-1980 1981-2001Ø area /m2/ 60,0 77,3 96,7 54,1 57,5 61,1Ø appts/building 1,15 1,19 1,14 6,5 11,9 13,8
Conditionned area 68,7 91,9 109,7 352,0 684,0 842,9
Windows area 12,5 18,4 23,8 70,4 136,8 168,58
Walls 105,8 128,8 129,7 260,8 476,5 529
Floor 56,1 75,9 82,3 168,5 156,7 167
Ceiling 55,3 75,0 88,0 168,5 172,4 183,3
Conditionned volume 267,5 325,7 399,4 1056 1983,6 2235,2
Uwall 1,4 1,2 0,65 1,4 1,2 0,8
Ufloor 1,1 0,8 0,4 1,1 0,8 0,6
Uroof 0,8 0,5 0,3 0,8 0,5 0,3
Uwindow 2,35 2,4 1,9 2,9 2,6 1,9
eA (kWh/m2/year) 316 259 164,8 252,7 193,6 147
Czech Brochure Contents:Czech Brochure Contents:
Building typology
Construction elements
Heating and DHW systems
Technical refurbishment measuresCurrent
Standard refurbishment
Advanced refurbishment
Energy efficiency data
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Brochure LayoutBrochure Layout
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TABULA Building Typologies in the National Context of the Czech Republic
Thank you for your attention!
