ENERGY EFFICIENCY AGENCY OF THE REPUBLIC OF SERBIA ENERGY EFFICIENCY IN THE BUILDING SECTOR IN SERBIA

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1 ENERGY EFFICIENCY AGENCY OF THE REPUBLIC OF SERBIA ENERGY EFFICIENCY IN THE BUILDING SECTOR IN SERBIA Evaluation of the Effects of the Applied EE Measures in two Schools Dimitrije Lili UNECE Workshop How effective urban planning can lead to greener urban communities &economies and promote social cohesion Prague, Czech Republic 3 4 May 2010

2 Energy Efficiency in Buildings Concept of the Energy Efficiency Improvement in Building Sector assume organized, systemized and systematic activity with the aim to live, work and operate in the same or improved conditions with lower energy consumption.

3 Environment Protection Sustainable Development As consequence of the decreasing use of the Nonrenewable energy sources (fossil fuel) we have decreasing of the GHG emissions and contribution to: Environment Protection, Decreasing of the Global Warming, and Sustainable Development.

4 State of EE in Building Sector in Serbia * Final energy consumption in the Building stock was 3,29 Mtoe* in Share of the Building Stock in final energy consumption were: %; % - whereof 65% in the residential sector - about 60% for the heating purposes Share of the Building Stock in final energy consumption is >40% - EU M ODE OF THE BUILDINGS HEATING 14% District heating - 14% 50% 1) 1to = 41,868 GJ = 11,63 MWh * Programme for Implementation of the Serbian Energy Development Strategy until 2015 in the period % 14% 12% Local boiler - 12% Electrical power - 14% Natural gas - 10% Soil fuel - local furnace - 50%

5 State of EE in Building Sector in Serbia * Average annual heating energy consumption in the Building stock in: SERBIA: Residential sector 171 kwh/m 2 District Heating (DH) 55 kwh/m 2 Domestic hot water (DHW) Nonresidential sector 194 kwh/m 2 (DH) 12 kwh/m 2 (DHW) Average DH and DHW: kwh/m 2 (DH) 33.5 kwh/m 2 (DHW) * Programme for Implementation of the Serbian Energy Development Strategy until 2015 in the period

6 Energy Efficiency in Buildings Demonstration Projects Multi annual strategy program Energy Efficiency in the Building Stock aimed to reduction of energy consumption in residential and tertiary buildings Energy Efficiency Agency of the Republic of Serbia, implemented in 2005/2006, the project Energy Efficiency it the Public Buildings Demonstration Projects. The project was implemented with the financial support of the EU, through the European Agency for Reconstruction (EAR). The paper presents the evaluation results on the example of the successfully implemented demonstration project for energy efficiency improvement in the building of the schools Radivoj Popovic in Sremska Mitrovica and Jovan Popovi in oka

7 Energy Efficiency in Buildings Demonstration Projects 16 Municipalities/Projects Municipal Public Buildings Total Investments:>1,400,000 Grant amount: 897,000 Financing Source: EAR Per Project: to 70% Realization period:

8 Implemented EE Measures School Radivoj Popovi in Sremska Mitrovica School Jovan Popovi in oka Replacement of old wooden windows and doors with new double-glazing, PVC windows and doors; replacement of old light-oil fired boiler with new natural-gas fired boiler (500 kw) with burner and auxiliary equipment; construction of a new boiler house; connection to natural gas distribution pipe network; and installation of 115 thermostatic radiator valves. Total cost 58,800 Installation of new natural-gas fired boilers (2x300 kw) (Heating was on heavy fuel oil) Adaptation of the boiler house Connection to distribution natural gas pipe network Total cost 43,945

9 Demonstration Projects Activities Evaluation of the results Evaluation of the results was performed by comparison of the: energy consumptions energy costs total CO 2 emissions, and Energy Indicators in the heating seasons in two years: in the year before and the year after implementation of EE measures in the buildings.

10 Heating degree days (HDD) for several Serbian towns As the compared heating seasons were meteorologicaly different, the actual number of the heating degree days (HDD), for each year, were calculated and incorporated in the analysis for the purpose of higher accuracy in evaluation of actual results Heating Degree Days (HDD) (Heating period: seven months, five days per week; i =18 o C) 2004/ / /07 HDD za : t Z SD ( tu t n 1 sr, n t u sr, n ) SD n 0 0 Beograd Dimitrovgrad Kikinda Negotin Niš Sjenica S Palanka S Mitrovica V Gradište Valjevo Zrenjanin

11 Energy Consumption MWh ENERGY CONSUMPTION for period October - April Fuel Oil Natural Gas Eletricity Total ENERGY CONSUMPTION for period Octobe r - April Total annual energy consumption / / /2007 per m 2 of gross area, comparing the Heating season heating seasons 2005/06 and 2006/07, was reduced by 16.25% Total annual energy consumption: 2004/ /07 : perm 2 /a: from kwh/m 2 /a 46.2 kwh/m 2 /a (reduction of 64,6%), per HDD: from 185 kwh/hdd 85 kwh/hdd (reduction of 54%). More acurate and more realistic indicator of energy reduction is 54%. MWh / / /2007 Heating season Heavy Fuel Oil Natural Gas Electricity Total

12 Energy Indicator - Heating School Radivoj Popovic Sremska Mitrovica School Jovan Popovic Coka after before Criteria School after before A B C D E F G A C < > 290 A B C D E F G C D EI kwh/(m 2 god) EI kwh/(m 2 god) EI [kwh/m 2 /a] represents an indicator of the total energy consumption in the heating period (annualy), Q tot, [kwh/a], per m 2 of gross area of the building (A g ), calculated using the corresponding actual number of the HDD.

13 Overall Scheme of the Energy Flows in Buildings Sector

14 CO 2 Emission t CO CO 2 EMISSION for period October - April 2004/ / /2007 Heating season Fuel Oil Natural Gas Electricity Total t CO CO 2 EMISSION for period October - April 2004/ / /2007 Heating season Heavy Fuel Oil Natural Gas Eletricity Total Total annual CO 2 emission, comparing the heating seasons 2005/06 and 2006/07, was decreased by 42.7% Total annual CO 2 emission: 2004/ /07: annualy: from tco 2 /a 55.5 tco 2 /a (reduction of 61,4%), per HDD: from tco 2 /HDD tco 2 /HDD (reduction of 50%). More acurate and more realistic indicator of CO 2 emission reduction is 50%

15 Conclusion 1/3 The Energy Efficiency Agency of the Republic of Serbia has implemented the project Energy Efficiency it the Public Buildings Demonstration Projects. For the purpose of obtaining more precise and reliable results, evaluation of energy and cost savings achieved by implementation of the EE measures in the existing public buildings was performed by incorporation of heating degree days in the calculation, with an aim to eliminate influence of meteorological conditions. If the influence of the meteorological data is neglected in case of significantly meteorologicaly different years (in this case the difference was 23% related HDD) the results may deviate significantly. In this case, the differences between the results with and without HDD were: - about 16% in annual reduction of energy consumption per m 2 gross area, - about 18% regarding decrease in annual CO 2 emission and - about 40% regarding the simple pay-back period (increasing).

16 Conclusion 2/3 The building sector is the largest user of energy and CO 2 emitter in the EU (about 40% of the total energy consumption and CO 2 emission). Well known targets: % (reduction of energy consumption and greenhouse gases emissions, and increasing share of renewables) by The building sector has potential for cost-effective energy savings, that contribute to the mentioned targets, for about 11% less final energy consumption in Member States shall draw up national plans for increasing the number of buildings (represent in relation to the total useful floor area in 2020) of which both CO 2 emissions and primary energy consumption are low or equal to zero (Article 9, EPBD 2002/91/EC -recast).

17 Conclusion 3/3 Urban planning has important role in the achieving previously mentioned targets especially: on increasing use of renewables in the heating and cooling purposes on decreasing use of fossil fuels in urban transport sector and increasing share of biofuels on development of passive cooling techniques, that improve indoor climatic conditions and the microclimate around buildings, etc.

18 THANK YOU FOR YOUR ATTENTION! REPUBLIC OF SERBIA ENERGY EFFICIENCY AGENCY Omladinskih brigada 1 Belgrade 11070, Serbia Tel Fax seea@seea.gov.rs Dimitrije Lili,PhD dimitrije.lilic@seea.gov.rs