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Öğe A GIS-based FAHP and FEDAS analysis framework for suitable site selection of a hybrid offshore wind and solar power plant(Elsevier, 2023) Karipoglu, Fatih; Ozturk, Samet; Efe, BurakThis study presents a Geographic Information System (GIS) based suitable site selection methodology for a hybrid system that includes offshore wind and solar PV. The methodology utilizes open source databases about decision criteria and applies this data using GIS to determine suitable sites for offshore wind and solar PV systems. For the assessment of multi-criteria which affect the potential hybrid energy power plants and the determination of the best suitable areas, Fuzzy Analytical Hierarchy Process (FAHP) and Fuzzy Evaluation based on Distance Average Solution (FEDAS) are used in the study. Results show that technical criteria has the priority weight of 0.60 while the weight of social criteria is about 0.07. Among sub-criteria, the wind speed has the highest priority weight while distance to port and visibility are the highest criteria of priority weight under economic and social main criteria, respectively. Among the alternatives, Area 2 (A-2) is determined as the best alternative for hybrid offshore power plants in the study area. This proposed methodology can be utilized by decision-makers to determine the best suitable locations for hybrid offshore wind and solar PV systems at any location. This paper suggests a new approach integrating GIS, fuzzy setbased AHP and EDAS as a novelty.Öğe A Novel Approach by Combining Fuzzy AHP and a Simulation Model to Analyze Suitability of Ports for Offshore Wind Farms(Int Soc Offshore Polar Engineers, 2025) Ozturk, Samet; Karipoglu, Fatih; Efe, BurakThis study presents a comprehensive suitability analysis for assessing the serviceability of existing container ports for offshore wind farms (OWFs) in Turkey, utilizing a combination of fuzzy analytical hierarchy process with Arena simulation modeling. This study is the first comprehensive analysis of offshore wind port infrastructure that integrates a multi-criteria decision making process with an Arena simulation model tailored specifically for existing container ports. The results indicate that technical criteria are deemed most critical, carrying the highest weight (0.563), with expansion potential identified as the most impactful criterion within the technical category. In addition, the study employs the Arena simulation software to forecast the operational workload on the most suitable ports following potential OWF installations.Öğe Bulanık TOPSIS Yöntemiyle Rüzgar Türbin Kanat Atıkları İçin En Uygun Bertaraf Yönteminin Belirlenmesi: Bandırma Örneği(2023) Ozturk, Samet; Atalay, KübraBu çalışmada, yakın gelecekte ömrünü dolduracak rüzgar türbinleri için seçilen Çok Kriterli Karar Verme yöntemi ile literatürde öne çıkan kanat atıklarının en uygun bertaraf yönteminin belirlenmesi amaçlanmaktadır. Bu amaçla Bulanık TOPSIS yöntemi uygulanmıştır. Çalışmada Bulanık TOPSIS'in uygulanabilmesi için katı atık yönetimi konusunda uzman 5 kişi ile ilgili kriterlerin değerlendirilmesi için anket çalışması yapılmıştır. Çalışma için Bandırma bölgesinde ömrünün sonuna yaklaşan bir rüzgar santrali örnek alınmıştır. Çalışma sonucunda, rüzgar türbini kanat atıklarının bertaraf yöntemlerinin uygunlukları sırasıyla sanat ve binalarda yeniden kullanım, betonda agreaga olarak kullanım, çimento fabrikalarında enerji üretimi ve düzenli depolama alanlarında bertaraf edilmesi şeklindedir. Bu çalışmanın rüzgar santral işletmecilerine, belediyelere ve türbin kanat üreticilerine faydalı olacağı düşünülmektedir.Öğe Comprehensive Carbon Footprint Assessment Using EPA and DEFRA: A Case Study of Bursa Technical University(2025) Shahın, Somaia; Ozturk, SametBursa Technical University (BTU) is committed to achieving sustainability goals and has taken significant steps in this direction. This study was conducted in accordance with the emission factors of the Environmental Protection Agency (EPA) and the conversion factors of the Department of Environment, Food and Rural Affairs (DEFRA). The study was carried out in line with International Organization for Standardization (ISO) 14064 and ISO 14001 standards and in harmony with the Sustainable Development Goals (SDGs), drawing on the experiences of five Turkish universities. This paper provides detailed information on BTU's carbon footprint calculation methodology, the standards used, and its alignment with the SDGs. The application of two distinct emission factors, those of EPA and DEFRA, yielded divergent carbon footprint (CF) values for BTU. The EPA approach yielded a value of 2697 tCO2e while the DEFRA-based assessment resulted in a lower CF of 1526 ton of CO2 equivalent (tCO2e). It is noted that most of the carbon emissions in the university is due to electricity consumption followed by natural gas usage. A prioritized action plan could be reducing the electricity consumption with automated lighting and laboratory equipment, subsequently increasing energy efficiency in the buildings.Öğe Determining Suitable Regions for Potential Offshore Wind Farms in Bandırma Bay using Multi-criteria-Decision-Making Method(2021) Karıpoglu, Fatih; Ozturk, Samet; Genç, Mustafa SerdarWind energy is an environmentally friendly, profitable, and renewable energy resource. Wind energyeployment is increasing in the last two decades. In this paper, Bandırma bay which has a potential for offshore wind deployment is studied to determine the most suitable area in it and eventually potential offshore power capacity of the location is estimated. This study combines applications of Geographical Information System and Multi-Criteria- Decision-Making Methodology to obtain fast results supported with visual documentation. In this scope, eight standard criteria such as wind speed, water depth, bird migration lines are applied and nvestigated in detail by using Geographical Information System. It is found that there is sufficient wind speedt the shallow level of the sea. Consequently, two locations are found to be suitable; one is on the northwest and the other one is on the north east of Bandırma, with capacities of 72 MW and 48 MW, respectively.Öğe Evsel Katı Atıkta Sıfır Atık Uygulanabilirliği: Bursa Örneği(2024) Ozturk, Samet; , NurBu çalışmanın amacı Bursa ilinde ikamet eden bireylere yönelik belediyeler ve ilgili kurumlar tarafından verilen bilinç ve farkındalık oluşturma çalışmalarının ve eğitimlerinin ne kadar etkili olduğunun ve bireylerin bilgi düzeylerinin ve sıfır atık projesinin Bursa ilinde uygulanabilirliğinin analiz edilmesidir. Bu çalışmada tamamen gönüllülük esasına dayanan çevrimiçi anket 529 kişi tarafından yanıtlandırılmıştır. Toplanan veriler SPSS 26 uygulaması vasıtasıyla ANOVA ve t-testi ile istatistiksel olarak analiz edilmiştir. Bu çalışmayla Bursa ilinde medeni durum parametresine göre evli katılımcıların bekar katılımcılara göre sıfır atık bilincinin daha yüksek olduğu, kadınların çevre bilinci ve kirliliğin önlenmesine erkek katılımcılardan daha çok dikkat ettikleri tespit edilmiştir. 26-35 yaş aralığındaki katılımcıların sıfır atık ve çevresel atık bilincinin diğer yaş aralıklarına göre daha yüksek olduğu saptanmıştır.Öğe Investigation of the best possible methods for wind turbine blade waste management by using GIS and FAHP: Turkey case(Springer Heidelberg, 2023) Ozturk, Samet; Karipoglu, FatihThe aim of this study is to present the status and projections of wind turbine blade retirement in Turkey; to investigate the number of retiring WT blades in the regional, manufacturer, and material aspects; and to discuss the management methods for retired WT blades. To determine the best possible wind turbine blade waste management methods for Turkey, a combined application of Geographical Information Systems (GIS) and the Fuzzy Analytical Hierarchy Process (FAHP) is used in this study. It is found that around nine thousand WT blades will become waste between 2020 and 2039 in Turkey, corresponding to around 80,500 tons of waste. On average, 52,325 tons of glass/carbon and 28,175 tons of polymers will be accumulated between 2020 and 2039 from wind turbine blades. More than half of the WT blade waste will come from two WT manufacturers, namely, Enercon and Nordex. Aegean and Marmara regions will provide 74% of the blade waste, where 33% of them will be 2 MW and 2.5 MW sizes of WT blades. Furthermore, a case study is applied to Izmir city to demonstrate the results of FAHP for finding the best available method to dispose of WT blades. The results show that using blade waste as filling material is the best alternative, while waste-to-energy is the last favorable option for blade waste management. Finally, sensitivity analyses are applied to demonstrate the robustness of the results for the inclusion of new alternatives and the bias of experts' judgments.Öğe Photovoltaic Waste Assessment and Recovery Potential: A Case Study in Chile(Mdpi, 2025) Ozturk, SametRecently, there has been a surge in the popularity of renewable energy systems due to their lucrative and sustainable attributes. Among these, photovoltaic (PV) systems stand out as prominent examples. Nevertheless, it is imperative to ascertain the management of waste produced by these systems in order to mitigate environmental pollution and harness their economic potential. This study aims to assess the present status and forecast the accumulation of waste generated by PV power plants in Chile. Utilizing openly available public data, a database is constructed to track the accumulation of waste. Two scenarios, namely, early-loss and regular-loss scenarios are employed to estimate the projected accumulation of PV waste. The findings indicate that by the years 2035 and 2043, the accumulation of waste is estimated to reach 100,000 tons under the early-loss scenario and regular-loss scenario. The total anticipated waste from solar PV modules is projected to be 284,906 tons, with c-Si PV modules contributing 175,595 tons to this total in Chile. Remarkably, it is determined that more than 235,000 tons of materials from this waste is recoverable, amounting to nearly USD 781 million in economic value. Silver is projected to bring the most economic value, with nearly USD 379 million, while lead, tin, cadmium, and zinc are each valued at less than USD 1 million. This study highlights the importance of promoting the sustainable development of PV systems, particularly in alignment with Sustainable Development Goals 7 (Affordable and Clean Energy) and 13 (Climate Action). Future research is expected to place greater emphasis on eco-design approaches in PV module production.Öğe Tarımsal ve Hayvansal Atık Kaynaklı Biyogaz Enerjisi için Tekno-Ekonomik Analiz: Bilecik İli Örneği(2025) Göleç, Merve; Ozturk, SametGünümüzde, dünya genelinde kullanılan enerji kaynaklarının büyük bir kısmı fosil yakıtlardan oluşmaktadır ve bu fosil kaynaklar gün geçtikçe tükenmektedir. Artan nüfus etkisiyle enerji talebi de aynı şekilde yükselmektedir. Ayrıca, fosil yakıtların kullanımı sırasında ortaya çıkan salınım çeşitli çevresel kirlilik sorunlarına neden olmaktadır. Bu sebeplerle, çevre dostu ve sürdürülebilir alternatif enerji kaynaklarına olan ilgi gün geçtikçe artmaktadır. Buna yönelik olarak bu çalışmada, Bilecik ilinin hayvansal ve tarımsal atıklarıyla biyogaz enerjisi potansiyelinin belirlenmesi ve biyogaz tesislerinin tekno-ekonomik analizi yapılmıştır. Bilecik ilinde hali hazırda bir biyogaz tesisi bulunmamakta olup bu doğrultuda bilimsel çalışma eksikliği gözlenmektedir. Bu çalışma ile literatürdeki bu eksiklik giderilmeye çalışılmıştır. Bu amaçla, Bilecik iline ait hayvan sayıları ve tarımsal üretim verileri Türkiye İstatistik Kurumu (TÜİK) aracılığıyla temin edilmiştir. Bu veriler kullanılarak, il sınırları içerisindeki büyükbaş hayvan ve yumurtacı tavuk atıkları ile fasulye, yeşil mercimek, nohut ve mısır hasıl atıklarından elde edilebilecek biyogaz potansiyeli ve bu potansiyele dayalı olarak gerçekleştirilebilecek elektrik üretimi hesaplanmıştır. Ayrıca, bu elektrik üretiminin sağlanabilmesi için gerekli olan enerji üretim tesislerinin kurulu güçleri hesaplanmıştır. Kurulu güce dayalı olarak maliyet analizi yapılmış ve tesis kurulumu için uygun ilçe belirlenmiştir. Elde edilen bulgulara göre, Bilecik ilindeki hayvansal ve tarımsal atıklardan elde edilebilecek biyogaz potansiyeli yıllık 4,5 milyon m³ olup, bu biyogazdan yıllık 21,7 GWh elektrik enerjisi potansiyeli ve bu elektrik enerjisinin karşılık geldiği toplam kurulu güç 2,58 MW olarak hesaplanmıştır. Analiz sonuçları, şehirde kurulacak biyogaz tesisinin geri ödeme süresi 5,7 yıl olarak hesaplanmıştır.Öğe Waste Management in EU, Asia and Turkey(Mehmet Sinan Bilgili, 2020) Ozturk, Samet; Themelis, Nickolas J.Practices of municipal solid waste (MSW) management in various countries depend on existing rules and regulations as well as their dedication to attaining sustainable waste management. Most of the developing countries suffer from lack of optimal MSW management which cause environmental problems and economic losses whereas in many developed countries better management of MSW brings environmental and economic benefits. This paper starts with a brief literature review of waste management practices and the share of the disposal methods for the countries in the world. It is noted that in the E.U., recycling and composting are applied to 46% of the waste whereas waste-to-energy (WTE) is used for 27.3% and landfilling is employed for only 26.3% of the wastes. A good example of waste management is the city of Milano in Italy and the statisitcs are presented in this paper along with the reasons behind the highly advanced waste management in this city. Milano (population: 1.5 million), has achieved 23% recycling and 17% composting rates while the rest of the MSW is utilized as fuel for electricity recovery in a WTE power plant. Moreover, recent developments for China in waste management are presented and the background of this development is explained. China is the first developing country to realize that WTE as an environmentally superior alternative to landfilling. In 2018, there were 450 WTE plants which recovered energy from 395,000 tons of waste per day. Finally, this paper shows the status of Turkey's waste management practice and share of disposal methods among all applications. It can be said that Turkey needs improvement on recycling and composting rate, which was only 12% in 2018, while an initiation to the WTE technology is necessary. Uncontrolled landfilling still constitutes 20% of all disposal methods whereas WTE is almost none for the country.
