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Yazar "Ozkaymak, Mehmet" seçeneğine göre listele

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  • Küçük Resim Yok
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    Co-digestion of Cattle Manure and Tea Waste for Biogas Production
    (Int Journal Renewable Energy Research, 2018) Aksay, Mehmet Volkan; Ozkaymak, Mehmet; Calhan, Rahman
    The increase of world population brings energy and food requirements. Increasing energy demand drives humanity towards new energy sources and work towards energy efficiency developments. Concordantly, due to population growth, the amount of waste is also increasing and causing environmental -issues. Biogas production by co-digestion of wastes -could be a common solution to both issues. Animal manures are typically used as a main substrate in co-digestion applications. Tea waste is used as a co-substrate in this -work due to having large production and consumption volume in Turkey. The aim of this study is to emerge new methods for disposal and reuse of household tea waste. For this purpose, co-digestion method was carried out to determine the biogas potential of household tea waste. Laboratory scale batch type co-digestion is carried out for 80 days under mesophilic (37 +/- 2 degrees C) conditions. All reactors fed with different mixing ratio of wastes and operated with different stirring speeds. The results showed that co-digestion of the wastes have positive impact on biogas and methane yield. Optimum biogas yield is 296.89 mL/gVS and 77.10% methane content are obtained from A2 which consist of 75% cattle manure and 25% tea waste with 100 rpm stirring speed. According to the results, co-digestion of cattle manure and household tea waste both have a positive effect on biogas production and methane content of biogas.
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    CO2 emission during the combustion of Orhaneli lignite coal
    (Emerald Group Publishing Ltd, 2017) Ozkaymak, Mehmet; Ceylan, Mehmet Ali; Okutan, Hasancan; Atakul, Husnu; Berrin, Engin; Coskun, Tuba; Inanc, Ozgur
    Purpose - In Turkey, dependence on foreign countries for energy is a problem which upsets all economic balances. Turkey's biggest fossil energy source is lignite coal. Therefore, energy conversion of lignite in thermal plants, causing minimum environmental effect is extremely important. The basic problem in terms of the combustion technology is to improve the combustion technology that can burn the low-qualified fuels that do not have standard fuel features (lignite, peat, schist). The most suitable technology today for the efficient and clean combustion of nonstandard low-qualified fuels is the combustion at fluidized-bed technology. In this study, CO2 emission that occurs during the combustion of Orhaneli coal that is one of our native low-qualified lignite, has been investigated according to the experimental study. Design/methodology/approach - For this combustion experiment, laboratory-scaled circulating fluidized-bed (CFB) process that exists at TU BITAK-MAM Energy Institute which has been designed and used before has been used. The effect of excess-air coefficient, combustion type and bed temperature to the greenhouse gas formation and CO2 emission has been investigated experimentally. In terms of flue gas emissions, it has been detected that the decrease of the amount of CO2 that has occurred has no positive effects on combustion efficiency, water vapor, SO2, NOx, CO and other gases which occur during deficient combustion must be thought as a whole and each reaction affects each other similar to complex reactions. Findings - As a consequence of measuring CO2 emissions over 10 minute periods, CO2 emissions are 12.43 percent average, CO2 decreases at different air coefficient values; Often form undesirable side reactions such as CO, NOx with back and forth reactions. Originality/value - The importance of aerodynamic structure of the system, and the losses and leakages forming in the system has been observed experimental and affected parameters are evaluated.
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    Design of Hazelnut Drying System Supported By Solar Energy, Investigation of Drying Performance and Determination of Proper Drying Model
    (Int Journal Renewable Energy Research, 2020) Acar, Bahadir; Dagdeviren, Abdullah; Ozkaymak, Mehmet
    Rapid and efficient drying process for the hazelnuts is required because of the lack of plain areas for solar drying due to the rough landforms in the Black Sea Region, high amount of cloudy days, causing product deteriorations and rots by instantaneous rain transitions and unexpected sudden rains. In this study, a hazelnut drying system supported by solar energy in order to achieve a rapid and efficient drying process was designed and drying performance was examined. In the designed system, a spiral shaft was used for movements of the hazelnuts in the drying chamber. Besides, the inner temperature of the chamber increased with the help of a sun collector. The process control device was used to keep the inner temperature as constant at 40 degrees C. In the experiments, 20kg weight hazelnut husk was used. The experiment was performed between 09:00 and 17:00 hours in a day with normal sunlight conditions and the total drying process took about 8 hours. The moisture ratios (MR) and drying rates (DR) graphics were obtained by scaling weight losses of the hazelnuts in each hour. As a result, it is observed that the 20kg weight of the hazelnuts decreased to the 17.201kg and therewith the total removed moisture from the hazelnuts was about 2.799kg. In the light of the moisture ratios obtained by experiments, 8 different kinetic drying models were performed with MATLAB software. According to the kinetic model results, the lowest reduced chi-square (chi(2)) and root mean square error (RMSE) were about 241x10(-6) and 155x10(-4) respectively. In addition, the coefficient of determination (R-2) was calculated as 0.9982 which is the highest result closest to 1. Among the 8 kinetic models, the Page model is given the best results for the drying process.
  • Küçük Resim Yok
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    Determination freeze-drying characteristics of ottoman strawberries
    (Gazi Univ, 2023) Acar, Bahadir; Dagdeviren, Abdullah; Yildiz, Busra Meryem; Ozkaymak, Mehmet
    This study was performed to define the kinetic drying model and to define the effective diffusivity coefficient of the fruit, which is called ottoman strawberries in the literature. In the study, strawberries by the weight of 100 g and with a thickness of 5 mm were placed in the drying device, and the data were processed by observing the weight loss every two hours after being subjected to the drying process for 14 hours. 8 different kinetic drying models were applied to the acquired data using the MATLAB program. As a result of the application, the estimated standard errors (RMSE), chi-square (X2), regression coefficients (R2) were calculated, error analysis was performed, R2, X2, and RMSE values were found, as 9,998x10-1, 6,993x10-5 and 0.7242x10-2. According to these results, the model of strawberry was determined that the most suitable model is the Page model. Also, the effective diffusivity coefficients for ottoman strawberries were calculated as 2.73286 x 10-10 m2/s. It was confirmed that the calculated effective diffusivity value was within the reference range mentioned in the literature (10-12 m2/s - 10-8 m2/s) for food products.
  • Küçük Resim Yok
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    Drying of Kanlıca Mushroom by the Hot Air Drying Method and the Investigations of Its Effects on Its Quality
    (Gazi Univ, 2023) Ongun, Goknur Kayatas; Aktas, Mustafa; Acar, Bahadir; Ozkaymak, Mehmet
    In this study, by providing the hot air drying of Kanlica mushroom collected from Karabuk city; prevention of aflatoxin occurrence, shelf life extension, taking precaution against early putrefaction and decomposition, protection of the beneficent aromas in its content have been ensured. As the dried product, Kanlica mushroom, the most consumed endemic plant spicy in terms of the vitamin and the mineral that it contains among the mushroom groups, has been used. By means of hot air drying, drying has been done at five different (30 oC, 40 oC, 50 oC, 60 oC and 70 oC) temperatures. The best result in terms of water activity, colour changes, energy consumption and drying duration has been obtained in the experiments at 50 oC. The water activity values of products (fresh mushroom water activity: 0,983 aw) dried in hot air drying processes have been found in 0,429 and 0,173 interval (in literature lower than 0,6) and according to the colour analysis experiments result, L*, a*, b*, C*, Ho, increment E, BI values of Kanlica mushroom dried at different temperatures have been calculated. According to the result of the analyses, it has been detected that the preservation of mushrooms hot air drying is appropriate.
  • Küçük Resim Yok
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    The effect of geometry variants on the performance of VAWT-rotor with incline-straight blades
    (Aip Publishing, 2021) Abusannuga, Hashem; Ozkaymak, Mehmet
    This study was conducted theoretically with the aim of investigating the effect of the straight blade angle change on the aerodynamic performance of the vertical axis wind rotor (VAWR). The work was done within the blade angle range of 25 degrees -85 degrees with an angular gradient of 20 degrees. A special name has been given to the VAWR concerned in this paper, where it was called Straight Slant Blades (SSBs). The so-called multi-stream tube (MST) model was modified to be suitable for SSBs. MST is an aerodynamic model, which was previously used to work on what is known as Darrieus and H-Darrieus vertical axis wind turbines. A computer program is designed and developed using Microsoft Visual Basic to be consistent with the objectives of this research. As for verifying the effectiveness of this program, its theoretical results were compared with previous laboratory results from other research studies as it proved its effectiveness in achieving satisfactory results commensurate with the objective of this study. This study is applied to four groups of different engineering designs for the SSB rotor, where each group is concerned with one of the geometric variables confined to the rotor height 2H, the rotor radius R, the number of rotor blades N, and the airfoil C. The results obtained are displayed as rotor power coefficient curves as a function of blade tip speed ratio. As it resulted in the ideal range for the angle of the blade between 45 degrees and 65 degrees, according to the rotor in this range, the value of maximum power coefficient Cp-MAX is at its maximum and the range of tip speed ratios is the highest in addition to the diminution of the problem of self-movement.
  • Küçük Resim Yok
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    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 Volkan
    The 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).
  • Küçük Resim Yok
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    Energy and exergy analysis of an organic Rankine cycle in a biomass-based forest products manufacturing plant
    (Tubitak Scientific & Technological Research Council Turkey, 2016) Eyidogan, Muharrem; Canka Kilic, Fatma; Kaya, Durmus; Ozkaymak, Mehmet; Coban, Volkan; Cagman, Selman
    In this study, energy and exergy analysis of anorganic Rankine cycle (ORC) unit was carried out at a biomass-based forest products manufacturing plant. The ORC unit is used for the production of electricity and heat, by using thermal oil as a heat source in the plant. The actual data were obtained from the ORC unit during the energy production process. Studies were realized for the energy and exergy analysis of the main components of the ORC unit, which are the evaporator, condenser, turbine, and regenerator, at two different working conditions. The effect of condenser pressure on the energy and exergy efficiencies of the system was studied in the context of this study. Under the working conditions of Case-1, the energy and exergy efficiencies were calculated as 12.59% and 33.26%, respectively. As for Case-2, the energy and exergy efficiencies were calculated as 13.22% and 35.5%. The gradation of the exergy destructions of the components from greater to lower can be listed as evaporator,condenser, turbine, regenerator, and pump.
  • Küçük Resim Yok
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    An energy efficiency analysis of an industrial reheating furnace and an implementation of efficiency enhancements methods
    (Sage Publications Inc, 2014) Kilinc, Enes; Kaya, Durmus; Kilic, Fatma Canka; Eyidogan, Muharrem; Ozkaymak, Mehmet; Taylan, Osman; Pedrycz, Witold
    Rapid consumption of energy resources, increasing energy needs, the competitive conditions in the industry and environmental concerns, all of those call for efficient use of energy resources. In this context, energy efficiency studies were carried out in a rolling mill of a reheating furnace of an integrated industrial enterprise. In studies, some important efficiency measurements were conducted, mass and energy balances were established by using the results of these measurements and the operating data of the plant along with energy saving opportunities, with the specified amounts and repayment periods were determined. Energy conservation studies that can be realized in the reheating furnace were considered including operation of the reheating furnace with the pertinent excess air coefficient, compensation of the air leakage losses in the recuperator and establishment of the economizer in the furnace. As a result of these investigations some saving opportunities were determined and a new recuperator, economizer and gas analyzer were installed in the reheating furnace leading in total of 2,913,924 kcal/h of energy savings. After the implementation of energy saving measures, reheating furnace efficiency was increased from 61.83% to 69.43%.
  • Küçük Resim Yok
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    Energy Management with Intelligent Plug and Socket
    (Gazi Univ, 2022) Yilmaz, Suleyman Hilmi; Taskesen, Edip; Roshanaei, Khandan; Ozkaymak, Mehmet
    Nowadays the devices that are used for electricity consumption by monitoring consumption values, and energy saving methods are supposed to identify and to develop them. To save the electricity people should know the consumption values of the devices and have idea about the consumed electricity. In this study, RFID technology, which is an automatic identification system, smart plug systems are used after recognizing the identity of the device information about the electricity consumption of that device. In this way, I directed the user to use electrical devices, which can be used when the electricity tariff is cheap so that the user could save money. For an average family, only the electricity consumption of the washing machine and dishwasher accounts for 30% of the total consumption. A family that uses a multi-time tariff will be able to save 10-15% by using the mentioned washing machine and dishwasher for example at night when the electricity tariff is low.
  • Küçük Resim Yok
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    Evaluation of internal structure modifications effect of two-phase closed thermosyphon on performance: An experimental study
    (Pergamon-Elsevier Science Ltd, 2021) Ozbas, Engin; Selimli, Selcuk; Ozkaymak, Mehmet; Frej, Alsediq S. S.
    In this paper, an experimental study has been carried to enhance the effectiveness of a two-phase closed ther-mosyphon (TPCT) type heat pipe. For this purpose, three different designs have been developed by modifying the internal structure so as not to interfere with the physical operation of TPCT. Three heat pipes with different internal structures were manufactured with additional pipes placed longitudinally inside the evaporator and condenser sections of the normal (conventional) TPCT. Ionized pure water is used as a working fluid at the same rate in Normal, Type-1, Type-2, and Type-3 heat pipes. TPCTs are positioned at three different inclination angles, 26 degrees, 41 degrees, and 56 degrees, to see the performance effect not only among themselves but also on the changes made by the gravitational effect. For each tilt angle, four TPCTs were simultaneously powered by solar energy on three different days. As a result of the experiments carried out in July, it has been observed that the optimum incli-nation angle for solar water heated TPCT is 26 degrees. In addition, it was found that with the increase of the angle of tilt, the thermal resistance (R) of the heat pipes also increased and the heat transferability of the TPCT decreased. Comparing the new designs and normal TPCT, Type-2 acted better at tilt angles of both 26 degrees and 41oAs a result, the heat transfer and efficiency of normal TPCT have been improved by almost 14% with Type-2 at the tilt angle of 26 degrees.
  • Küçük Resim Yok
    Öğe
    Exergoeconomic analysis of a geothermal organic Rankine cycle power plant using the SPECO method
    (Wiley, 2017) Ergun, Alper; Ozkaymak, Mehmet; Koc, Gonca Aksoy; Ozkan, Salih; Kaya, Durmus
    In this study, exergy and exergoeconomic analyses were performed for a geothermal, Rankine cycle (Binary) power plant that generates 7.5 MW of power. The exergy analysis showed that the highest destruction of exergy, that is, about 3200 kW, occurred in the vaporizer. The losses were about 2670, 1700, 1035, 880, 421, 349, 306, and 33 kW in the turbine, recuperator, condenser, separator, organic fluid pump, production pump, preheater, and injection pump, respectively. The exergy efficiency of the system was calculated as 32.3% at the reference temperature of 25 degrees C. The unit cost of the electricity produced in this plant is 7.96 $/Gj according to the exergoeconomic analysis that was made using the specific exergy cost (SPECO) method. It was determined that using low temperature sources is meaning significant. Thus, thermodynamic and thermoeconomic (exergoeconomic) analyses should be conducted in current plants to identify the inefficient equipment that is increasing costs. (c) 2017 American Institute of Chemical Engineers Environ Prog, 36: 936-942, 2017
  • Küçük Resim Yok
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    Exergy analysis of a circulating fluidized bed power plant co-firing with olive pits: A case study of power plant in Turkey
    (Pergamon-Elsevier Science Ltd, 2017) Topal, Huseyin; Taner, Tolga; Naqvi, Syed Arslan Hassan; Altinsoy, Yelda; Amirabedin, Ehsan; Ozkaymak, Mehmet
    The effects of the above-mentioned parameters on exergy destruction, and CO2 emission of the power plant are determined for circulating fluidized bed power plant co-firing. The aim of this study is to perform thermodynamic analysis on can Circulating Fluidized Bed Power Plant (CFBPP) co-fired with olive pits. The results of this study also show that the total exergy damage of the plant is about 295 MW and the net exergy yield is 31.26%. The majority (252.40 MW) of exergy destruction occurs in the main boiler and accounts for 86.05% of the total exergy breakdown of CFBPP through exergy analysis. The results show that CFBPP has an effective feature of biomass supplement for exergetic performance and CO2 emissions. (C) 2017 Elsevier Ltd. All rights reserved.
  • Küçük Resim Yok
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    Experimental Investigation of Freeze-Dried of Kanlica Mushroom (Lactarius Salmoncolor)
    (Gazi Univ, 2023) Ongun, Goknur Kayatas; Ozkaymak, Mehmet; Acar, Bahadir; Aktas, Mustafa; Dagdeviren, Abdullah
    In this study, it is examined to prevent the formation of toxins by providing drying of the kanlica mushroom, which is unique to Karabuk, by freezing, to extend the shelf life, to take measures against early decay and spoilage. As the dried product, kanlica mushroom, which is an endemic plant, contains high amounts of protein and amino acids. In this study, the 5 mm thick cut kanlica mushroom was placed in a freeze-drying device and the drying process was initiated. Weight losses during drying were recorded and kinetic models were created. In the experiment lasting 14 hours in total, 100 gr. The weights of the canlica mushrooms were measured every two hours and MR (Moisture rates) were calculated. According to our results, the lowest chi-square (X-2) was 1.851 x10(-4) and the estimated standard error (RMSE) value was 0.01358. The correlation value (R-2) was calculated as 0.9988, close to one. The best Page model gave these results from the kinetic models. The effective diffusivity for the Kanlica Mushroom with 5 mm thicknesses can be calculated at about 3.2035x10(-10) m(2)/s. It was confirmed that the calculated effective diffusivity value was within the reference range mentioned in the literature (10(-12) m(2)/s - 10(-8) m(2)/s) for food products.
  • Küçük Resim Yok
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    Freeze Drying of Saffron (Crocus sativus L.)
    (Taylor & Francis Inc, 2011) Acar, Bahadir; Sadikoglu, Hasan; Ozkaymak, Mehmet
    Saffron obtained from the dried stigmas of a flower scientifically known as Crocus sativus L. is considered to be the most precious and expensive agricultural product due to its labor-intensive harvest and post-harvest processing. The post-harvest processing such as dehydration and storage conditions determine stability, quality, and economical value of the final product. The contents of crocin (degraded carotenoids) and safranal (carotenoid oxidation products) are the key components that characterize color, taste, and aroma characteristics of saffron. In this work, the quality parameters such as crocin and safranal contents of commercial saffron that were obtained by using the freeze-drying method and natural sun drying were studied. The sarfanal contents of the samples dried in a freeze dryer were found to be five times higher than the safranal contents of the samples dried naturally under the sun, while crocin contents of the samples dried in a freeze dryer were about 40% higher than the crocin contents of the samples dried naturally under the sun. These encouraging results indicate that the freeze-drying process can be used effectively for dehydration of saffron by minimal loss of safranal and crocin contents.
  • Küçük Resim Yok
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    Freeze Drying Process of Kiwi Slices with Various Thicknesses and Investigation Drying Characteristic of Process
    (Gazi Univ, 2023) Acar, Bahadir; Dagdeviren, Abdullah; Ozkaymak, Mehmet; Guinaleh, Abdillahi Robleh
    In the study, the kiwi fruit was sliced into various thicknesses as 5 mm and 7 mm, and those sliced specimens were put in the freeze-drying device. the mass losses of the specimens were measured and saved during the drying process and kinetic drying models were performed using those measurements. The mass losses of each kiwi slices in 100 g mass were measured every two hours in the experiment lasting 14 hours in total and moisture ratios (MR) were calculated as well. Considering the experimental results, 8 different kinetics drying models were performed using MATLAB software. As a result, the lowest reduced chi-square (X-2) values for 5 mm and 7 mm thicknesses were calculated about 8.261x10(-6) and 1.705x10(-5) respectively, the root means square error values (RMSE) were about 0.002865 and 0.004146, respectively. Also, the coefficient of determination (R-2) for both thicknesses was calculated as 0.9999 which was the highest result closest to 1. Among the 8 different kinetic drying models, the Logarithmic model was chosen as a proper kinetic drying model for kiwi products. When the moisture contents and drying rates were considered it was seen that the drying rate of kiwi slices with 7 mm thickness exhibited slow behavior because of the higher moisture content. Besides, it was determined that the effective diffusivity coefficients for specimens with 5 mm and 7 mm thickness were calculated as 2.25 x 10(-10) m(2)/s and 3.28 x 10(-10) m(2)/s respectively.
  • Küçük Resim Yok
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    Freeze-drying kinetics and diffusion modeling of hawthorn
    (Yildiz Technical Univ, 2023) Hagig, Khaled Ali; Acar, Bahadir; Dagdeviren, Abdullah; Taskesen, Edip; Ozkaymak, Mehmet
    This study tests freeze-drying (FD) technology (Scanvac Coolsafe model, Labogene brand) to preserve hawthorn fruit. First, 100g hawthorn slices were frozen and then freeze-dried. Kinetic models were applied, and hawthorn's moisture ratio and weight loss were noted after every two hours during the 14-hour freeze-drying process. Matlab program is used to perform a total of eight kinetic drying models. Results show that the root mean square error was 0.011063, the highest determination coefficient was 0.9987, the least chi-square was 1.959x10(-4), and the effective diffusivity was 2.33742x10(-1)0m(2)/s. The diffusion approach is the best among the eight models.
  • Küçük Resim Yok
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    Freeze-Drying of Persimmon (Diospyros Kaki) Slices Investigation of Drying Characteristics
    (Gazi Univ, 2023) Dagdeviren, Abdullah; Acar, Bahadir; Alhammadiy, Abdullatif; Roshanaei, Khandan; Coskun, Tuba; Inanc, Ozgur; Ozkaymak, Mehmet
    This study was performed to define the kinetic drying model and to define the effective diffusivity coefficient of the fruit, which is called Diospyros kaki in the literature, from the family of Ebonaceae known as the Persimmon in our country. In the study, blueberries by the weight of 100 g and with a thickness of 5 mm were placed in the drying device, and the data were processed by observing the weight loss every two hours after being subjected to the drying process for 14 hours. 8 different kinetic drying models were applied to the acquired data using the Matlab program. As a result of the application, the estimated standard errors (RMSE), chi-square (X-2), regression coefficients (R-2) were calculated, error analysis was performed, R-2, X-2, and RMSE values were found, as 0.019483, 5.062 x 10(-4) and 0.9558. According to these results, it was determined that the most suitable model is the Page model. Also, the effective diffusivity coefficients for Persimmon (Diospyros Kaki) were calculated as 1.79775 x 10(-10) m(2)/s.
  • Küçük Resim Yok
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    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, Mehmet
    In 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.
  • Küçük Resim Yok
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    Hydrogen Production through Alkaline Electrolyzers: A Techno-Economic and Enviro-Economic Analysis
    (Wiley-V C H Verlag Gmbh, 2023) Naqvi, Syed Arslan Hassan; Taner, Tolga; Ozkaymak, Mehmet; Ali, Hafiz Muhammad
    Hydrogen production through an alkaline electrolyzer as well as a techno-economic and enviro-economic analysis are presented. The proposal of this innovative study is to generate hydrogen gas energy from an alkaline electrolyzer energy system. The prototype of this alkaline electrolyzer was developed by application of hydrogen production through alkaline electrolyzer optimization. This novel chemical mixture is made up from the combination of ammonia, ethyl alcohol, urea, and deionized or distilled water. The result proved to be a model study by emphasizing the annual profit of the alkaline electrolyzer of a simple payback period of the prototype system. A prototype of alkaline electrolyzer is designed and developed to produce oxyhydrogen gas through water electrolysis.
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