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Anes Kazagic
Public Company Elektroprivreda BiH

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Conference paper
Published: 05 November 2020 in Inventive Computation and Information Technologies
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District heating networks present a high potential for the transition of the heat energy sector, both technically and organisationally. They allow integration of renewable energy, improve the overall energy efficiency, as well as facilitate sector coupling (coupling between heating, electricity and mobility). Many district heating systems could be upgraded by improvements at the side of the heat consumption, heat distribution and heat generation. The EU project Upgrade DH (H2020; Contract No. 785014; www.upgrade-DH.eu) supports the upgrading and retrofitting process of DH systems in different climate regions of Europe, covering various countries. Core activities of the Upgrade DH project include the collection of the best upgrading measures and tools, the support of the upgrading process for selected district heating networks, the organisation of capacity building measures about DH upgrading, financing and business models, as well as the development of national and regional action plans. Overall Upgrade DH approach should lead to more efficient district heating networks and sustainable solution for the heating sector. The specific upgrading opportunities need to be identified, described, assessed and translated into Key Performance Indicators (KPI) which may allow the results to be monitored as the action gets implemented. In this paper, the upgrading method is demonstrated on Tuzla DH, one of demo-cases considered under Upgrade DH project. In developing the upgrading measures for Tuzla DH, three measurable objectives 20/20/20 were taken into account, namely (i) 20% increasing energy efficiency (reducing annual primary energy demand from 350 GWh down to 270 GWh), (ii) 20% increasing RES (from 0 up to 20% of RES) and (iii) 20% reducing CO2 emission (CO2 cut from today 115,000 t/a emitted in producing 350 GWh of heat down to max. 92,000 tCO2/a. By identified and prepared upgrading measures, those targets are highly exceeded.

ACS Style

Anes Kazagic; Dominik Rutz; Ajla Merzic; Dino Tresnjo; Jasenko Fazlic; Suljo Saric; Mustafa Music; Izet Delalic. Sustainable Transition of District Heating Networks—Upgrading the Performance of DH System Tuzla and Integration of RES Modules. Inventive Computation and Information Technologies 2020, 459 -476.

AMA Style

Anes Kazagic, Dominik Rutz, Ajla Merzic, Dino Tresnjo, Jasenko Fazlic, Suljo Saric, Mustafa Music, Izet Delalic. Sustainable Transition of District Heating Networks—Upgrading the Performance of DH System Tuzla and Integration of RES Modules. Inventive Computation and Information Technologies. 2020; ():459-476.

Chicago/Turabian Style

Anes Kazagic; Dominik Rutz; Ajla Merzic; Dino Tresnjo; Jasenko Fazlic; Suljo Saric; Mustafa Music; Izet Delalic. 2020. "Sustainable Transition of District Heating Networks—Upgrading the Performance of DH System Tuzla and Integration of RES Modules." Inventive Computation and Information Technologies , no. : 459-476.

Journal article
Published: 22 May 2019 in Energy
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This paper elaborates the concept of the renewable district heating system (DHS) in Municipality of Visoko, Bosnia and Herzegovina, as part of the CoolHeating project funded by the EU’s Horizon 2020 programme, which is going to be integrated into the planned DHS supplied by a combined heat and power facility (CHP). Forecast of the demand, type and capacities of the production units, as well as optimization of the production plan, was performed by the software EnergyPRO. Calculations are based on inputs such as climate conditions, connection rate for housing facilities, prices of all energy sources, energy efficiency performance of the facilities, temperature level of DHS, heat losses, investment costs, operating costs such as maintenance costs, fuel and electricity prices, taxes, subsidies and finally operating time, while the period for the optimization was calculated per hour throughout the year. The overall approach leads to a flexible modular DHS solution based on RES and CHP. Much better economic and environmental sustainability indicators, demonstrated on real inputs of the Visoko project, have been noticed as opposed to the existing heating solution. Similar concepts can be developed for other communities to ensure replication and thus multiply the effects and contribution to sustainable development.

ACS Style

Anes Kazagic; Ajla Merzic; Elma Redzic; Dino Tresnjo. Optimization of modular district heating solution based on CHP and RES - Demonstration case of the Municipality of Visoko. Energy 2019, 181, 56 -65.

AMA Style

Anes Kazagic, Ajla Merzic, Elma Redzic, Dino Tresnjo. Optimization of modular district heating solution based on CHP and RES - Demonstration case of the Municipality of Visoko. Energy. 2019; 181 ():56-65.

Chicago/Turabian Style

Anes Kazagic; Ajla Merzic; Elma Redzic; Dino Tresnjo. 2019. "Optimization of modular district heating solution based on CHP and RES - Demonstration case of the Municipality of Visoko." Energy 181, no. : 56-65.

Conference paper
Published: 24 April 2019 in Inventive Computation and Information Technologies
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Above 30% of power production in Europe is still coming from coal. More than 600 coal or lignite fired power plants produce electricity all over the Europe, with more capacity located in Germany, Poland, Bulgaria, Greece, the Czech Republic and South East Europe. Various ways of reducing CO2 from coal-based power generation are currently in certain phases of research, development and demonstration. Many of them involve biomass co-firing. Co-firing coal with biomass can be carried out directly (in the same combustion chamber), indirectly (after pre-treatment), in parallel (separate combustion), and completely (full conversion to biomass). Opportunities for retrofitting are co-firing of biomass and complete retrofits (full conversion). This paper summarize recent activities carried out in Bosnia and Herzegovina, namely JP Elektroprivreda BiH and Faculty of Mechanical Engineering of University in Sarajevo, to develop and implement solutions of retrofitting large thermal power plants in Bosnia and Herzegovina with biomass. Target is achieving the power production in thermal power plants in Bosnia and Herzegovina to be sustainable in long-term view.

ACS Style

Izet Smajevic; Anes Kazagic. Development, Significance and Possibilities of Application Cofiring of Coal with Biomass in Thermal Power Plant in BOSNIA and Herzegovina. Inventive Computation and Information Technologies 2019, 461 -467.

AMA Style

Izet Smajevic, Anes Kazagic. Development, Significance and Possibilities of Application Cofiring of Coal with Biomass in Thermal Power Plant in BOSNIA and Herzegovina. Inventive Computation and Information Technologies. 2019; ():461-467.

Chicago/Turabian Style

Izet Smajevic; Anes Kazagic. 2019. "Development, Significance and Possibilities of Application Cofiring of Coal with Biomass in Thermal Power Plant in BOSNIA and Herzegovina." Inventive Computation and Information Technologies , no. : 461-467.

Conference paper
Published: 04 November 2018 in Inventive Computation and Information Technologies
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Small modular district heating (DH) system has greater advantages than the traditional heating system in many aspects and it shows great development potential and broad market prospect in the future. Such DH grids can be fed by different heat sources, including solar collectors, biomass systems and surplus heat sources (e.g. heat from industrial processes or biogas plants that is not yet used). Especially the combination of solar heating and biomass heating is a very promising strategy for smaller rural communities due to its contribution to security of supply, price stability, local economic development, local employment, etc. The objective of the CoolHeating project, funded by the EU’s Horizon2020 programme, is to support the implementation of “small modular renewable heating and cooling grids” for communities in South-Eastern Europe. This paper elaborates the developed concept of the renewable district heating system in Municipality of Visoko, as well as the corresponding function of each component.

ACS Style

Anes Kazagić; Ajla Merzić; Elma Redžić; Dino Trešnjo. Case Study on Small, Modular and Renewable District Heating System in Municipality of Visoko. Inventive Computation and Information Technologies 2018, 572 -581.

AMA Style

Anes Kazagić, Ajla Merzić, Elma Redžić, Dino Trešnjo. Case Study on Small, Modular and Renewable District Heating System in Municipality of Visoko. Inventive Computation and Information Technologies. 2018; ():572-581.

Chicago/Turabian Style

Anes Kazagić; Ajla Merzić; Elma Redžić; Dino Trešnjo. 2018. "Case Study on Small, Modular and Renewable District Heating System in Municipality of Visoko." Inventive Computation and Information Technologies , no. : 572-581.

Journal article
Published: 09 March 2018 in Energies
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This paper presents a research on ash-related problems and emissions during co-firing low-rank Bosnian coals with different kinds of biomass; in this case woody sawdust and herbaceous energy crops Miscanthus. An entrained-flow drop tube furnace was used for the tests, varying fuel portions at a high co-firing ratio up to 30%wt woody sawdust and 10%wt Miscanthus in a fuel blend. The tests were supposed to optimize the process temperature, air distribution (including OFA) and fuel distributions (reburning) as function of SO2 and NOx emissions as well as efficiency of combustion process estimated through the ash deposits behaviors, CO emissions and unburnt. The results for 12 co-firing fuel combinations impose a reasonable expectation that the coal/biomass/Miscanthus blends could be successfully run under certain conditions not producing any serious ash-related problems. SO2 emissions were slightly higher when higher content of woody biomass was used. Oppositely, higher Miscanthus percentage in the fuel mix slightly decreases SO2 emissions. NOx emissions generally decrease with an increase of biomass co-firing rate. The study suggests that co-firing Bosnian coals with woody sawdust and Miscanthus shows promise at higher co-firing ratios for pulverized combustion, giving some directions for further works in co-firing similar multi-fuel combinations.

ACS Style

Anes Kazagić; Nihad Hodžić; Sadjit Metovic. Co-Combustion of Low-Rank Coal with Woody Biomass and Miscanthus: An Experimental Study. Energies 2018, 11, 601 .

AMA Style

Anes Kazagić, Nihad Hodžić, Sadjit Metovic. Co-Combustion of Low-Rank Coal with Woody Biomass and Miscanthus: An Experimental Study. Energies. 2018; 11 (3):601.

Chicago/Turabian Style

Anes Kazagić; Nihad Hodžić; Sadjit Metovic. 2018. "Co-Combustion of Low-Rank Coal with Woody Biomass and Miscanthus: An Experimental Study." Energies 11, no. 3: 601.

Conference paper
Published: 31 January 2018 in Inventive Computation and Information Technologies
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Conventional power utilities are faced today with challenges in terms of sustainable development and decarbonisation. Different measures are used to achieve the set targets, i.e. increase of RES, increase of energy efficiency and CO2 cut. In this work, a method for achieving CO2 cut targets has been demonstrated on a real power system, i.e. EPBiH power utility, operating in Bosnia and Herzegovina. EPBiH power utility is based today on a mix of coal and hydro, while there is a great potential for RES projects; hydro, wind and biomass. So it is possible to sustainably exploit the available capacity, to drastically reduce the environmental impact of the power sector, for example by use of biomass and expansion of cogeneration in existing coal-based power plants. Also, for new thermal power units to be commissioned and being necessary for consumption coverage once when generation from RES is low, the environmental requirements are fulfilled. Those units are planned to be CHP which would additionally contribute to the decrease of overall emissions on district heating coverage area. Also, the efficient use of fuel will be maximized in accordance with the best available techniques, while biomass co-firing will significantly contribute to the set goals. The model used in this work took into account the security of supply, competitiveness and sustainability, considering environmental, economic and social indicators. Three scenarios with different CO2 cut rates by 2050 have been considered, while a range of measures have been applied to achieve the set decarbonisation targets. All scenarios involve significant increase of RES, from current 18 to 43% in LOW CO2 cut, through 62% in MID CO2 cut, up to 76% in HIGH CO2 cut scenario. As compared to 1990 level, CO2 emissions in those scenarios are decreased for 55, 65 and 80%, respectively. In all cases, attention was paid to maintaining the necessary level of stability of the power system and security of supply. SCA and MSA have been performed for sustainability assessment. SCA results show that HIGH CO2 cut scenario has advantage compared to MID CO2 cut and LOW CO2 cut scenarios, when environmental and economic OPEX indicators are considered. However, when only investment is considered, LOW CO2 cut scenario is preferable. Although electricity demand is met in all scenarios, it was found that an increase in investment in generation facilities that will contribute reducing the costs of operation and maintenance, as well as reducing CO2 emissions, in the long run will be multiply rewarded, when comparing LOW CO2 cut with HIGH CO2 cut scenario. It was confirmed by MSA analysis, which showed that no matter which relation between weighting factors is considered, HIGH CO2 cut scenario is preferable.

ACS Style

A. Kazagić; M. Musić; E. Redžić; A. Merzic. Transition of a Conventional Power Utility to Achieve 2050 RES and Carbon Cut Targets—EPBIH Case Study. Inventive Computation and Information Technologies 2018, 1156 -1169.

AMA Style

A. Kazagić, M. Musić, E. Redžić, A. Merzic. Transition of a Conventional Power Utility to Achieve 2050 RES and Carbon Cut Targets—EPBIH Case Study. Inventive Computation and Information Technologies. 2018; ():1156-1169.

Chicago/Turabian Style

A. Kazagić; M. Musić; E. Redžić; A. Merzic. 2018. "Transition of a Conventional Power Utility to Achieve 2050 RES and Carbon Cut Targets—EPBIH Case Study." Inventive Computation and Information Technologies , no. : 1156-1169.