Overview of the NAS regulations building sector and

Overview of the NAS regulations, building sector and research activities Sašo Medved University of Ljubljana Slovenia Bulgaria Czech Republic Hungary Latvia Lithuania Poland Romania Slovak Republic Slovenia

Report prepared by Technical University of Budapest, Hungary IPA SA, Bulgaria Brno Univertity of Technology, Chech Republic En. Effect Center for Energy Efficiency, Bulgaria Czech Technical University in Progue Intertermo CCConcept Ltd, Romania Warsaw University of Technology, Poland Latvian Academy of Science, Latvia Slovak University of Technology, Slovak Republic Black Sea Regional Energy Centre and Technical University of Sofia Institut of Heating and Sanitary Technology, Poland Ecofys, Poland Technical University pf Cluj-Napoca, Romania ZRMK Technological Building & C. E. Institut, Slovenia University of Ljubljana, Slovenia Lithuanian Energy Institute, Lithuania

Purpose l l To examine the characteristics of the expanded EU market, technological, economic, social and educational dimensions, as it relates to building energy research To identify potential target market sectors on the basis of potential benefits Identify the most appropriate technologies for NAS markets Identify and implement coherent technology transfer and promotion strategies appropriate to NAS market needs

Chapters l Building thermal insulation and energy performance regulation l Energy supply survay l Meteorological datas and available databases l Building sector development and RTD programs overview l Status of research activities and technologies

Heat loss calculation - methodology EN EN ISO Heat loss coeficient, ground, thermal bridges, windows National BOL CZ H LAT LIT POL ROM SLV SLO

Heat losses coeficients 2, 4 windows 2, 0 1, 6 1, 2 0, 8 0, 4 walls roofs 0, 2 BOL CZ H LAT LIT POL ROM SLV SLO

Heat losses coeficients 2, 4 windows 2, 0 1, 6 1, 2 state-of-the-art 0, 8 0, 4 walls roofs 0, 2 BOL CZ H LAT LIT POL ROM SLV SLO

Heat losses coeficients 2, 4 windows great potential 2, 0 1, 6 1, 2 0, 8 0, 4 walls roofs 0, 2 BOL CZ H LAT LIT POL ROM SLV SLO

Heat losses coeficients 2, 4 windows 2, 0 1, 6 included in overall envelope U 1, 2 0, 8 0, 4 walls roofs 0, 2 BOL CZ H LAT LIT POL ROM SLV SLO

Heat losses coeficients 2, 4 windows 2, 0 1, 6 f (DT) 1, 2 compared with fictive building with same size 0, 8 0, 4 walls roofs 0, 2 BOL CZ H LAT LIT POL ROM SLV SLO

Heat losses coeficients 2, 4 windows 2, 0 1, 6 economy analyse in case of renovation 1, 2 0, 8 0, 4 walls roofs 0, 2 BOL CZ H LAT LIT POL ROM SLV SLO

Overall (envelope) U value compared reference 0, 70 (A/V=1) building f (A/V) yes f (A/V) 0, 61 (A/V=1) f (A/V), DD 0, 55 (A/V=1) no BOL CZ H LAT LIT POL ROM SLV SLO

Ventilation related heat losses min air required m 3/h m 3/per building air tightness <0, 8 h-1 <4, 5 h-1 nat. vent m 3/h m 3/per m 3/h m 3/per m 3/m 2 h <2 h-1 <0, 6 low-E heat recovery >2 h-1 > 8 h/day 60% BOL CZ >0. 7 h-1 1200 m 3/h 50% >10. 000 m 3 H LAT LIT POL ROM SLV SLO

Energy performance Calculation procedure simple method EN 832 nation. EN 832 f(A/V), no. of stores f(A/V) 46, 4 0, 7 -0, 75 37. 4 W/m 3 K k. Wh/m 3 (A/V=1) W/m 3 K k. Wh/m 3 EN 832 Limitations 64. 4 (A/V=0. 5) k. Wh/m 2 dwellings 85 k. Wh/m 2 N=242 d T=3. 8 o. C BOL other 27, 2 k. Wh/m 3 CZ H LAT LIT POL ROM SLV SLO

Renewable energy sources SC, PV 400 k. Wh/m 2 SC - - 700 vac k. Wh/m 2 250 -450 k. Wh/m 2 - 6 -9 m 2 4 m 2 8 -3 m 2 H LAT PV BOL CZ LIT POL ROM SLV SLO

Lighting daylighting DF > 1. 5% min (buil. type) window/ floor uniformity area glare BOL DF >90 min 1 st March solar duration window/ floor area > 1: 8 >3 h March – Sept > 90 min 1 st March – 13 th Oct CZ >1 h Dec > 3 h March >5 h Jun H between 8: 00 -16: 00 hour LAT LIT POL ROM DF >1 h Dec > 3 h March in 1/3 living >5 h area Jun SLV SLO

ENERG Y SUPPLY l l l Primary energy supply Final energy supply Fuels, fuels switching Renewable energy sources Trends Scenarious

Primary energy supply PE (PJ) 1726 159 trend - 5. 5% fuels 1980 809 286 -58% coal 38% 4500 +7% -28% +2% +17% 19902000 1995 -2000 19952000 19962000 1995 -99 19902000 coal 61% (-20%) gas 40% gas+oil 64% nuclear 8% 378 gas+oil 60% nuclear +hydro 32% gas 40% import 94% BOL CZ H LAT LIT POL ROM SLV SLO

Final energy consumption FE (PJ) 1050 Households (PJ) 240 23% Rank 127 216 t 2 nd BOL CZ 184 1068 40% 393 37% 51 25% 2 nd 41 32% 4000 2 nd 1 st H LAT LIT POL ROM 581 SLV 205 SLO

Renewable energy RE in PE (PJ) 21 37 25 wood peat waste 2% 29% 14% 135 5% 16 7% 8% 32% households BOL CZ H LAT LIT POL ROM SLV SLO

geother. PV biogas biomass wind Renewable electricity price €/k. Wh 0, 29 <36 k. W 0, 25 0, 48 >10 k. W 0, 21 0, 42 -0, 79 f(k. W) 0, 7 -1. 4 residental 0, 17 0, 25 -0. 6 grid 0, 13 0, 09 0, 05 BOL CZ H LAT LIT POL ROM SLV SLO

Meteorological datas l Sources of data l Publications l Institutions l DD calculation procedures

Meteorological datas Sources of data l Temperatures l average yearly l average monthly l extrems l

Meteorological datas Sources of data l Temperatures l Solar radiation l tables l sunshine hours l maps with zones l

Meteorological datas Sources of data l Temperatures l Solar radiation l Degree days l heating DD l number of heating days l cooling days (some) l

Meteorological datas l l l Sources of data Temperatures Solar radiation Degree days Test reference year 1+5 BOL CZ 4 H LAT LIT POL ROM SLV 4 SLO

Meteorological datas l l l Sources of data Temperatures Solar radiation Degree days Test reference year Trends

Research in field of energy and environmental performance of the buildings l l l l History of building sector developments Description of building stock Technical and economical status domestic construction sectors Overiew of RTD programms Initiatives, support measurements and strategies Targets Building sector financing

Research in field of energy and environmental performance of the buildings History of building sector developments l STRUCTUR E 1930 1950 PERIOD ENCLOSURES FUEL walls windows wood masonry + reinforced concrete poles and floors burnt brick, 28 cm and 42 thick. double of wood. ofthe floor area 1950 1970 idem burnt brick, 24 cm and 37. 5 cm thick blocks of autoclaved aerated concrete idem domi nant 1970 1990 idem and prefabricat ed idem reinforced 1970 concrete 1990 and thermal insulating reinforced concrete panels 30 cm. thick. idem 1950 1970 and simple windows with heat insulated glass simple P. V. C. windows with heat insulated glass 1990 2000 BOL idem 1970 1990 CZ H LAT fuel oil gases domi nant LIT coal HEATING SYSTEMS POL ROM terracotta stoves domi nant Local heatin g syste ms dominan t SLV district heating SLO

Research in field of energy and environmental performance of the buildings l Description of building stock l construction period l thermal insulation level l size & number l typology l type of constructions l type of heating systems BOL CZ H LAT LIT POL ROM SLV SLO

Research in field of energy and environmental performance of the buildings l Technical and economical status domestic construction sectors l construction works, capital repairs, maintenance l ownership structure l market trends BOL CZ H LAT LIT POL ROM SLV SLO

Research in field of energy and environmental performance of the buildings l Initiatives, support measurements and strategies l Energy Law (paragraphs fot building sector) l Executive regulations regard to RE l Thermal modernisation act BOL CZ H LAT LIT POL ROM SLV SLO

Research in field of energy and environmental performance of the buildings l Initiatives, support measurements and strategies - barriers BOL CZ H LAT LIT POL ROM SLV SLO

Research in field of energy and environmental performance of the buildings l l Targets l energy policy (2000 – 2008) l electricity supply short and long therm l gas industry (2000 – 2008) l coal mining l uranium mining (2000 – 2030) l oil supply Targets l till 2005 25% decrease of heat demand for heating l till 2010 35% decrease of heat demand for heating according to 2000 BOL CZ H LAT LIT POL ROM SLV SLO

Status of the report Draft version prepared by all NAS-ENERBUILD partners l Authors will be asked for autorization l Conclusions will be made l BOL CZ H LAT LIT POL ROM SLV SLO