Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Karaali, Rabi(2)
- Tozlu, Alperen(2)
- Öztürk, İlhan Tekin(2)
- Abuşoğlu, Ayşegül(1)
- Alcan, Yalçın(1)
- Alcan, Özlem(1)
- Bayramoglu, Turgut(1)
- Coşkun, Aykut(1)
- Esmer, Yusuf(1)
- Gök, Aslıhan(1)
- Gültekin, Ömer Faruk(1)
- Güngör, Okan(1)
- Kahveci, Hakan(1)
- Karakaş, Ahmet(1)
- Karcıoğlu, Reşat(1)
- Kaya, Yunus Mustafa(1)
- Korkmaz, Özge(1)
- Koşunalp, Selahattin(1)
- Oztekin, Erman Kadir(1)
- Serencam, Uğur(1)
- Teber, Ahmet(1)
- Yalçın, Selçuk(1)
- Yilmazel, Sefa Emre(1)
- Yıldız, Şaduman(1)
- Çorapsız, Muhammed Fatih(1)
- Çorapsız, Muhammed Reşit(1)
- Özahi, Emrah(1)
Yayınlar
- MakaleAçık Erişim2025Farmers as a consumers: utaut with dual moderated mediation model
Yilmazel, Sefa Emre
The purpose of the study is to determine the factors that affect the adoption and implementation of clean and energy efficient practices by farmers. For this reason, in line with the model developed within the scope of UTAUT, it was investigated whether two moderator variables (environmental concern, financial benefits) make a difference for clean and energy practices. Data were collected from 400 participants for clean production and 400 participants for energy-efficient production. The data obtained were analyzed with Process Macro model 4 and model 21 developed by Hayes. As a result, it was seen that the UTAUT variables had a significant effect on farmers' adoption intention in both data. In addition, the moderating effect of adoption intention on the relationship between UTAUT variables and usage behavior was proven. Furthermore, the effect of both moderator variables in the study was revealed. While environmental concern has a moderating effect between performance expectancy, effort expectancy and facilitating conditions and adoption behavior in the clean production. Financial benefits has a significant moderating effect between adoption intention and usage behavior for all four of the UTAUT variables in the energy efficient production.
- MakaleAçık Erişim2024İktisadi Büyüme, Enerji Tüketimi ve CO2 Emisyonu Arasındaki İlişki: MIST Ülkeleri Üzerine Bir Değerlendirme
Yıldız, Şaduman; Gök, Aslıhan
İktisadi büyüme kişi başına reel gayrisafi yurtiçi hasıla (GSYH)’daki artışı ifade etmektedir. Ülkelerin gelişmişlik düzeyini ortaya koyan en önemli göstergelerden biri de iktisadi büyümedir. Bu bağlamda ülkelerde iktisadi büyümelerini sağlamayı amaçlamışlardır. Sanayi devrimi sonucunda iktisadi büyümeyi sağlamak için ülkelerin enerji tüketiminde artış yaşanmış ve bu da çevreye zararlı atıklar karışmasına neden olmuştur. Ayrıca sanayi devrimi ile kentsel nüfusta da artış yaşanmış ve enerji tüketimi de bu bağlamla artmıştır. Çeşitli nedenlerle artan enerji tüketimi çevresel sorunların artmasına neden olmuştur. Ülkeler iktisadi büyümelerini gerçekleştirebilmek için enerji tüketimlerini artırmış ve bu da ülkelerde karbondioksit (CO2) emisyonunda da artışın yaşanmasına neden olmuştur. Yapılan bu çalışmada Meksika, Endonezya, Güney Kore ve Türkiye (MIST) ülke grubu için iktisadi büyüme, enerji tüketimi ve CO2 emisyonu arasındaki bağlantı 1971-2014 dönemi yıllık verileriyle ele alınmıştır. Ayrıca çalışmaya kontrol değişkeni olarak kentleşme verisi de dahil edilmiştir. Çalışmada eşbütünleşme ilişkisini araştırmak için Durbin-Hausman eşbütünleşme testi (2008) ve LM (2007) eşbütünleşme testi uygulanmıştır. İktisadi büyüme, enerji tüketimi, CO2 emisyonu ve kentleşme değişkenleri arasında eşbütünleşme ilişkisi bulunmuş sonra OLS-CD katsayı tahmin yöntemi ile katsayılar tahmin edilmiştir. Katsayı tahmini sonucunda enerji tüketimi için kullanılan elektrik tüketiminin CO2 emisyonunu azalttığı sonucuna ulaşılırken kentleşme ve iktisadi büyümenin ise CO2 emisyonunu arttırdığı sonucuna ulaşılmıştır.
AtıfOpenAlex2
İncele - Derleme MakaleAçık Erişim2021Investigation of Shale Gas Reserves in The World and A Case Study for Electricity Production from Shale Gas in Turkey
Oztekin, Erman Kadir; Tozlu, Alperen
Shale gas reserves, which is globally accepted as unconventional gas resource, scattered around the world and can be used in order to meet the growing energy needs due to limited amounts of conventional resources. Since notable effort has to be put in order to investigate and drill shale gas resources the early decision has to be made carefully, especially considering the economic benefits. Several factors must be considered including the known technically recoverable shale gas amount at the selected region, current technology to drill the shale source and the amount of investment before the extraction of shale gas. In this study, global underground shale gas amount and recent discoveries as well as the potential shale gas areas in Turkey are presented. Benefits of using shale gas for electricity generation and common methods being used during shale gas extraction are studied along with gas and liquid flow mechanisms. At the end, general overview of separation and utilization of shale gas components is schematically presented. In the case study, the potential of electricity generation in the SE Anatolia region in Turkey is estimated with only using methane obtained from the shale gas purification process at the power generation step. According to the estimations, 3337.8 MW electric power may be generated for 50~55 years, at the appropriate gas engine by using 8.5 billion cubic meter shale gas annually.
- MakaleAçık Erişim2021Strategy Development for the Applicability of Photovoltaic Systems in Hospitality Enterprises using SWOT Analysis and AHP Method: The Case of Sinop Province
Alcan, Yalçın; Esmer, Yusuf; Alcan, Özlem
Strategy is the way to achieve the objective or goal. In this context, strategies are developed and attempted to be implemented in order to achieve certain objectives or goals in each enterprise or sector. In this study, by combining SWOT analysis and AHP method, a strategy was developed to use the photovoltaic systems in hospitality enterprises. For this purpose, in the study, based on the relevant literature, a research has been conducted on the applicability of photovoltaic systems in the hospitality enterprises in Sinop. In the research, SWOT analysis was carried out for managers, experts and related academicians to identify the strengths and weaknesses of photovoltaic systems and opportunities and threats to these systems. 4 strategies were developed using the data obtained from the SWOT analysis, and then the most suitable one was tried to be determined by AHP method. As a result of the research, it has been determined that the most suitable strategy for the applicability of photovoltaic systems for hospitality enterprises in Sinop province is carrying out studies for photovoltaic systems to be an alternative energy source in the tourism sector.
AtıfOpenAlex4TR Dizin2İncele - MakaleYalnız künye2020Financial Performance Analysis Using Intuitionistic Fuzzy Logic and Entropy Based Multi – Criteria Decision Making Method: An Application on Energy Companies Traded In BIST
Gültekin, Ömer Faruk; Yalçın, Selçuk; Karcıoğlu, Reşat
As a result of the rapid development of technology, the need for energy increases day by day. Increased energy demand caused the energy sector to have a vital importance in the economic development processes of countries. In this study, the financial performance of 8 energy companies traded in BIST are analyzed using intuitionistic fuzzy logic and multi-criteria decision making techniques. In the study, the data, the real data of the 8 energy companies between 2013 and 2017 were used. In decision process, 5 main criteria and 13 sub-criteria were used as growth, activity, leverage, profitability and liquidity. As a result of the analysis, Odaş Elektrik A.Ş showed the best performance among 8 energy companies, while Ayen Elektrik A.Ş showed the worst performance.
AtıfTR Dizin19İncele - MakaleAçık Erişim2020Ranking alternative energy resources technology programsin turkey based on the methods of multi-criteria decisionmaking analysis
Teber, Ahmet; Karakaş, Ahmet
The diversity less among the Alternative Energy Resources Technology Programs (AERTPs) in Turkey makes giving the “proper” decision crucial by high school senior students. The literature review exhibits that there exists a need over the expectation for a ranking system of the two-year programs in vocational schools in Turkey so as identifying two-year programs compared to others. In this strategic decision context, it is especially important for the students to make a suitable decision associated with their higher education. Therefore, this study focuses on developing a specific ranking system of twoyear energy programs in Turkey. In order to classify the programs, the most important decision criteria should be required. In this aspect, a survey is applied to a hundred high school senior students to recognize which multi-criteria for selection of an energy program they pick. Thus, the survey makes this study is more applicable to build a foundation for a field-based ranking system in Turkey. In this regard, a framework for ranking of AERTPs during the academic year of 2019 in Turkey is accomplished using three methods of Multi-Criteria Decision Making Analysis including Analytic Hierarchy Process (AHP), Simple Multi-Attribute Rating Technique (SMART), and Technique for Order Preference by Similarity to Ideal Solution (TOPSIS).
AtıfOpenAlex1İncele - MakaleAçık Erişim2020An Experimental Study to Determine the Relationship Between Power Factor and Harmonic Distortion in Single-Phase AC Voltage Controller
Çorapsız, Muhammed Reşit; Kahveci, Hakan; Çorapsız, Muhammed Fatih
This paper deals with the determination of the relationship between the power factor and the harmonic distortion in a single-phase AC (SPAC) voltage controller. The aim of this study is to investigate the change of power factor (PF) and total harmonic distortion (THD) during different phase triggering angles (PTA). Firstly, the advantages of using thyristor instead of triac in single-phase AC voltage controllers operating at high frequencies are mentioned. Secondly, the power factor and total harmonic distortions for single-phase AC voltage controllers are theoretically examined. Finally, the relationship between power factor and total harmonic distortion are demonstrated by both simulation and experimental studies. However, it is monitored that, at lower output voltages, the power factor (PF) is pretty much reduced and total harmonic distortion (THD) is significantly increased.
- MakaleAçık Erişim2019Güneş Panellerinde Cuk Dönüştürücü Tabanlı Değişken Şartlar Altında D&G, BM ve YSA Algoritmalarının Karşılaştırmalı Performans Analizi
Güngör, Okan
Güneş enerjisinden elektrik üretmekte kullanılan PV panellerin verim artırma çalışmaları devametmektedir. Verimi etkileyen unsurların başında MGNT algoritmaları gelmektedir. Bu çalışmada sezgisel(BM, YSA) ve D&G tabanlı MGNT algoritmaları incelenmiştir. Sezgisel algoritmaların uygulanabilmesi içinCuk dönüştürücüye ait denetleç tasarımı Matlab aracılığıyla yapılmıştır. Yapılan benzetim çalışmaları sonucunda, üçfarklı MGNT algoritmasının performans analizleri gösterilmişti
AtıfOpenAlex2TR Dizin1İncele - MakaleAçık Erişim2019Capacity Factor Analysis in Small Scale Hydropower Plants and a Practice Specific to Giresun
Serencam, Uğur
Energy is the fundamental element of social and economic sustainability in every aspect of life, from the smallest living body to large scale industrial facilities. In Turkey rapidly increasing industrial development process lead to extensive energy demand, which is met largely from imported fossil sources. Especially in recent years, as a result of increasing environmental awareness and economic and strategic reasons, a portion of the energy deficit is fed from, clean and reliable hydroelectric power plants with great importance. In our country, a total of 295511 GWh electricity was produced in 2017. About 41368 GWh (14%) of the total amount was generated by large hydraulic plants and 17082 GWh (5.78%) by small hydraulic plants. In this study, small hydroelectric power (SHP) stations are considered to reduce the increasing energy cost and for this purpose SHP in Giresun are analyzed leading to private additives in the capacity factor analysis. According to the results it is possible to conclude that thetime of power plant investment is shortened as the capacity factor increases in hydroelectric power plants.
AtıfOpenAlex2TR Dizin1İncele - MakaleAçık Erişim2019Design of Asynchronous Motor With 3 Phase 600 kW Power Short Circuit Cage Rotor: Physical Dimensioning and Electrical Calculations
Kaya, Yunus Mustafa; Coşkun, Aykut
Asynchronous motors with short circuit caged rotor are easy to build, durable, high operational safety, low maintenance requirements and cheaper than their counterparts, so they are widely used in industry and in many areas. In this study, design of asynchronous motor with short circuit caged rotor with 3 phase, 600 kW active power, mains voltage 400 V, operating frequency 50 Hz, pole pair 2, pole number 4, efficiency 0.95 and power factor 0.93, physical dimensioning and electrical calculations were made. Firstly, main dimensions of motor according to the design criteria and performance values defined, then physical dimensioning of the stator and rotor and electrical calculations, inductions and magnetic field intensities, stator and rotor weights, losses, and efficiency were calculated. The results of the analysis showed that the designed asynchronous motor meets the required power values and design performance criteria.
- MakaleAçık Erişim2018A New Energy Prediction Algorithm for Solar-Powered Systems
Koşunalp, Selahattin
Renewable energy sources can provide the energy requirements of resource-constrained systems due to their inherent continuous availability. Solar power is a good example of the most effective ambient energy source. In literature, it exhibits an uncontrollable but predictable manner which makes the prediction of future energy availability a critical issue. This study presents a new approach to estimate the amount of energy that will available in future, depending on the past energy generation pattern. This approach also considers the fluctuations in energy generation in the current day. It is inspired by a wellknown algorithm, namely Exponential Weighted Moving-Average (EWMA). The performance of the proposed scheme has been tested on various real-world scenarios in comparison to EWMA. The simulation results show that our algorithm provide more accurate estimation of future energy availability than EWMA.
AtıfOpenAlex2TR Dizin1İncele - MakaleYalnız künye2018The relationships between energy consumption and financial openness, trade openness and financial development in turkey
Korkmaz, Özge
The aim of this study is put forward the relationship between energy consumption and financial openness, trade openness and financial development for the period 1970-2016 of Turkey and Italy. In this context energy consumption per capita used as dependent variable and domestic private credit per capita, trade openness and financial openness used as independent variables. In the study the cointegration relationship between energy consumption and given macroeconomic variables is analyzed by ARDL Border Test and founded a longterm relationship between variables for both countries. Study continued with error correction model because of the long term relationship. According to the error correction model results, there is a significant and positive effect on the energy consumption of trade openness rate for Turkey and financial openness rate for Italy. Besides this, findings show that there is a positive and significant relationship of financial development over the energy consumption.
AtıfTR Dizin2İncele - MakaleYalnız künye2017Scopus SJRQ3Gaz türbinli kojenerasyon tesislerinin performans analizleri
Karaali, Rabi; Öztürk, İlhan Tekin
In this study, some improving methods of gas turbine cogeneration cycles are applied on a simple cogeneration cycle. These methods are preheating air, preheating air and fuel, inlet air cooling by using evaporative cooling and absorption cooling. These cogeneration systems are evaluated with respect to energy efficiency (energy utilization factor), exergetic efficiency, electric and heat power, electric-heat energy rate, artificial thermal efficiency and fuel energy saving ratio and are compared with each other. In these analyses, the thermodynamic parameters such as compressing ratio, air and fuel mass ratio and compressor inlet temperatures of the cycles are used. It is concluded that these parameters can be listed from most effective to least effective as air fuel ratio, pressure ratio and compressor inlet temperature. It is also concluded that the most efficient cycle is found to be the air-fuel preheated cycle for obtaining more electric power and less heat power, and the simple cycle is the most suitable one for obtaining more heat power and less electric power
AtıfTR Dizin1İncele - Proje2016Biyobozunur Katı Atık Tesislerinin Termodinamik, Termoekonomik Analiz Ve Optimizasyonları Çerçevesinde Yenilenebilir Enerji Potansiyellerinin Araştırılması Ve Sıfır Atık Yaklaşımıyla Sürdürülebilir Modellerin Geliştirilmesi
Abuşoğlu, Ayşegül; Özahi, Emrah; Tozlu, Alperen
In this study, thermodynamic and thermoeconomic analysis are performed using actual operating data of the Gaziantep Solid Waste Power Plant in Gaziantep. ASPEN Plus Engineering and Engineering Equation Solver (EES) software programs are used in order to analyze the current system thermodynamically. Energetic and exergetic efficiencies of the system are evaluated as 39.57 % and 56.29 %, respectively. Thermoeconomic analyses are performed by using "specific exergy costing" (SPECO) method and the payback period is found to be 5.82 year according to the analyses. In additition, five different scenarios are carried out for the purpose of energy recovery from the exhaust gas of the system and thermodynamic and thermoeconomic analyses of scenarios are also carried out. Scenario 2 (Electricity production using gas turbine cycle) is found to be the optimal scenario which can be integrated into the system in terms of the thermodynamic and thermoeconomic analyses. As a result of the thermodynamic analyses of scenario 2, energetic and exergetic efficiencies are found to be 47.16 % and 61.83 %, respectively. Also, 1287 kW extra power can be produced using second scenario which has a short payback period of 3.7 year. By means of these proposed scenarios and conducted analyses, the first study for solid waste power plant in Turkey is carried out in detail. This detailed study is conducted for the first time that related to solid waste power plants in Turkey with proposed scenarios and performed analyses. In addition to this, the other novelty of this study is to assess the proposed scenarios in the project for other solid waste power plants in Turkey in the frame of zero waste.
- MakaleYalnız künye2015Thoermodynamic Analyses of Steam Injected Gas Turnine Cogeneration Cycles
Karaali, Rabi; Öztürk, İlhan Tekin
In this study, air preheating, air-fuel preheating and simple cycles where steam injected in to combustion chamber are analyzed. The effects of steam injection on thermodynamic performance are calculated and obtained for the three different gas turbine cogeneration systems. Simulation programs written by the authors in FORTRAN code are obtained for the analyses by applying the first law of thermodynamics and the exergy analysis method. Thermodynamic performance of these three different cycles for variable mass of injected steam and different stages are obtained and compared with the results of the literature. The effects of injection steam into combustion chambers of those three cycles for variable compressing ratios, on power, efficiencies and performance are obtained. Consequently, the advantages and the disadvantages of injection steam are evaluated and all results of this study are compared with the literature. Injection steam into combustion chamber increases the electricity power and the electricity efficiency but decreases the heat power of the cycles.
- MakaleYalnız künye2015Biyokütle enerjisi ısıtma amaçlı fosil yakıtlara alternatif olabilir mi? TRA1 bölgesi üzerine tanımsal bir analiz
Bayramoglu, Turgut
Ekonomik faaliyetlerin temel girdisi olan enerji ülke ekonomisi ve yerel ekonomik büyüme için önemlibir unsurdur. Sosyal ve ekonomik hayatın her aşaması için vazgeçilmez bir unsur olan enerji, yenilenemeyenve yenilenebilir enerji kaynakları olmak üzere ikiye ayrılmaktadır. Fosil kaynaklı enerjilerin tükenecekolması ülkelerin çevre dostu yenilenebilir enerji kaynaklarına yönelmelerine neden olmuştur. Bu gerçektenhareketle yenilenebilir enerjilerin bir türü olan ve TRA1 Bölgesi’nde (Erzurum, Erzincan ve Bayburt) zenginbir şekilde bulunan biyokütle enerjisi kaynaklarına dayalı olarak gerçekleştirilecek tüketim bölgenin sosyoekonomikyapısına olumlu katkı yapacak ve yenilenemeyen enerjilere alternatif oluşturacak niteliktedir.TRA1 Bölgesi iklim şartlarından dolayı ısınmak amaçlı fosil yakıtlara aşırı bağımlı bir bölgedir. Bu sebeplebu çalışma, TRA1 Bölgesi’nde yerel kaynaklara dayalı olarak üretilebilecek biyokütle enerjisinin (BE) fosilyakıtlara alternatif oluşturup oluşturmayacağını tanımsal analizlerle açıklamayı amaçlamaktadır. Tanımsalanalizler yapılmasında, biyokütle kaynaklarına ilişkin istatistiki veri bulma sıkıntısı etkili olmuştur. Buamaçla çalışmada, TRA1 Bölgesi’ndeki hayvansal ve bitkisel biyokütle enerjisi potansiyeli; hayvan ve bitkimiktarları, atık miktarları, atıklardan elde edilebilecek teorik ve ekonomik biyokütle enerjisi miktarları gibigöstergeler açısından tablolar ve grafikler yardımıyla incelenmiştir. Yapılan analizler sonucunda, TRA1Bölgesi’nin BE potansiyelinin konutlarda ve iş yerlerinde ısınmak amaçlı kullanılan yenilenemez enerjikaynaklarına iyi bir alternatif oluşturacağı görülmüştür. Ayrıca analiz sonuçları, TRA1 Bölgesi’ne yönelikenerji yatırımlarının yerel ekonomik büyümeye daha fazla katkı sağlayacağını göstermiştir.
AtıfTR Dizin2İncele