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Öğe The effect of thermal camera and pyrometer usage in industrial tempering furnaces on optimum combustion performance(Emerald Group Publishing Ltd, 2015) Ozkaymak, Mehmet; Selimli, Selcuk; Kaya, Durmus; Yilmaz, Esref; Tabak, Abdulsamed; Aksay, Mehmet VolkanThe decrease of energy sources, the increase of energy need and energy costs, competitive conditions in industry and environmental sensitivity require the effective usage of energy sources. In this study, optimum combustion study by using thermal camera and pyrometer in the correct heat furnace of an industry plant for the effective usage of energy in industry. For this reason, in tempering furnace of a milling roll workshop, in order to control the efficiency of tempering, detect the flame length and color and control the homogeneous tempering, 4 thermal cameras and 4 pyrometers have been assembled to the appropriate locations of the furnace. In the study, the tempering furnace has been observed and the results of observations have been evaluated. The contribution of the changes made to the production has been calculated by the information obtained from thermal camera and pyrometer and has been examined with the date of reimbursement. Possible spare part and production saving has been established as 364,460 $ annually and back-payment time as 3 months. Accident risk that is caused by the hot air and sometimes occurs during the controls has also been reduced so that the workers have been forced to work more safely according to WHS (workers' health and security).Öğe Grey wolf optimization for optimum sizing and controlling of a PV/WT/BM hybrid energy system considering TNPC, LPSP, and LCOE concepts(Taylor & Francis Inc, 2022) Tabak, Abdulsamed; Kayabasi, Erhan; Guneser, Muhammet Tahir; Ozkaymak, MehmetIn this study, energy demand of a faculty was aimed to supply with a hybrid energy system (HES) consisting of photovoltaic (PV) panels, wind turbine (WT) and bomass (BM) system with optimum power usage distribution and sized to reach a lowest cost and a reliable system. In this optimization, total net present cost (TNPC) for economic analysis, loss of power supply probability (LPSP) for reliability, and localized cost of energy (LCOE) for determining the unit energy cost were considered and an effective control algorithm was developed to decide the power source for improving system reliability. We used genetic algorithm (GA) and simulated annealing (SA), which are commonly used in the literature. On the other hand, we utilized the Grey Wolf Optimizer (GWO), which was recently found out and inspired by the hierarchy and hunting instincts of grey wolves. The results of GWO algorithm were also compared with GA and SA and confirmed that GWO is satisfying. GWO achieved better results to solve problems by setting LPSP to both 0.02 and 0.01 upper limits. When LPSP set to 0.02 maximum point, GWO suggested PV system at 86.39 kW power and BG at 50 kW power. Consequently, the energy requirement of a faculty was supplied by an optimized and designed PV/WT/BM HES. In addition, by the installation of optimized system, 144.29 tons of CO2 emissions per year will be reduced.Öğe Mapping of biogas potential of animal and agricultural wastes in Turkey(Springer Heidelberg, 2022) Aksay, Mehmet Volkan; Tabak, AbdulsamedThis paper presents the biogas potential of animal manure and agricultural waste in Turkey. In the study, results such as the amount of animal manure and agricultural wastes, biogas potential, and electricity generation from biogas are mapped for 12 regions and 81 cities. Additionally, the rate of meeting the electricity demands of cities is found if the biogas potential is converted into electrical energy. Besides, the costs of biogas plant installations for the cities with the highest biogas potential in each region are calculated according to the highest investment conditions. Later, as a result of using biogas for electrical energy, the reduced CO2 emissions are calculated. According to the results, Turkey's total collectible manure, total collectible agricultural waste, and biogas potential are more than 176 million tons, 17 million tons, and 17 billion m(3) per year, respectively. Turkey's electricity generation potential and total CO2 emission reduction are more than 38 GWh and 174 million tons per year, respectively. The lowest payback period on investment is determined in the selected city of the Mediterranean region with 5.14 years, while the highest is in the Northeastern Anatolia region with 7.55 years. The results obtained will guide the priority given to the region and type of waste in biogas plant installation. Moreover, it will enable comparison with the investment costs of other renewable energy sources.Öğe Optimization and Evaluation of Hybrid PV/WT/BM System in Different Initial Costs and LPSP Conditions(Science & Information Sai Organization Ltd, 2017) Tabak, Abdulsamed; Ozkaymak, Mehmet; Guneser, Muhammet Tahir; Erkol, Huseyin OktayA modelling and optimization study was performed to manage energy demand of a faculty in Karabuk University campus area working with a hybrid energy production system by using genetic algorithm (GA). Hybrid system consists of photovoltaic (PV) panels, wind turbines (WT) and biomass (BM) energy production units. Here BM is considered as a back-up generator. Objective function was constituted for minimizing total net present cost (TNPC) in optimization. In order to obtain more accurate results, measurements were performed with a weather station and data were read from an electricity meter. The system was also checked for reliability by the loss of power supply probability (LPSP). Changes in TNPC and localized cost of energy (LCOE) were interpreted by changing LPSP and economic parameters such as PV investment cost, WT investment cost, BM investment cost, and interest rates. As a result, it was seen that a hybrid system consisted of PV and BM associated with an effective flow algorithm benefited from a GA meets the energy demand of the faculty.Öğe Performance analysis of a concentrated photovoltaic and thermal system(Pergamon-Elsevier Science Ltd, 2016) Ceylan, Ilhan; Gurel, Ali Etem; Ergun, Alper; Tabak, AbdulsamedThe purpose of the present study is PV/T system, which designed and implemented in order to reuse of thermal energy while increasing of electric production. Solar radiation was increased with the concentrator about two folds and electrical power gains were increased. A paraffin wax was used to store latent heat as a thermal energy storage. Thermal energy was combined with a greenhouse like air drier and used to dry the product. Thermal and electrical energy gain in the concentrated and non-concentrated panels were compared and total system efficiency was analyzed. The maximum temperature obtained at the back of the panel was calculated as 37 degrees C and the panel efficiency was 11% at mean solar radiation was 2000 W/m(2). (C) 2016 Elsevier Ltd. All rights reserved.
