Mühendislik Fakültesi, Enerji Sistemleri Mühendisliği Bölümü, Bildiri & Sunum Koleksiyonu
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Öğe Zero energy vehicle concept: L6e electric vehicle design for sustainable urban transportation(EDP Sciences, 2024) Polat, A. Özgür; Çeltek, Seyit Alperen; Kül, Seda; Balcı, Selami; Rawat, Nikita; Oubelaid, Adel; Bajaj, MohitIncreasing energy consumption and growing environmental concerns have heightened the demand for sustainable energy solutions. In response to this demand, the concept of "zero energy"emerges, offering a comprehensive approach encompassing energy conservation, ecological sustainability, the battle against climate change, energy independence, and economic efficiency. This study presents the concept of a 'Zero-Energy Vehiclea' for the first time in the literature. It explains the essential criteria for a vehicle to qualify as a Zero-Energy Vehicle. This study also aims to evaluate the suitability of CERYAN, an L6e class electric vehicle with the zero energy concept. CERYAN adopts Zero-Energy Vehicle principles by integrating solar panels, energy-efficient design, and fiberglass technology. This study highlights the potential of the zero energy concept to provide environmentally friendly and energy-efficient solutions in the field of transportation. © The Authors, published by EDP Sciences, 2024.Öğe Estimation of global solar radiation by using ANN and ANFIS(Institute of Electrical and Electronics Engineers Inc., 2019) Alparslan, N.C.; Kayabaşı, Ahmet; Rüşen, Selmin EnerSolar energy has the greatest potential among the energy sources available in the world and it is clean and universal energy source. The first parameter that should be determined carefully when planning systems based on solar energy is the solar radiation value. The solar radiation values obtained from ground observations can be estimated with various software models. Especially, estimation models designed using emerging computer technology have ease of use and accuracy. In this study, the well-known artificial intelligence techniques such as artificial neural network (ANN) and adaptive neuro-fuzzy inference system (ANFIS) are used to estimate solar radiation. The analysis of solar radiation requires complex, lengthy and time consuming procedures and artificial intelligence techniques such as ANN and ANFIS eliminate great effort and time. A system that measures atmospheric data such as light, temperature and humidity using sensors is designed and for this study, measurements were made for over a month. The atmospheric data obtained from the climatic conditions of the province of Karaman and the surface solar radiation values measured using the Pyranometer are utilized to construct these models. As a result of testing the constructed models, the ANFIS model is found to be more successful than ANN. © 2019 IEEE.Öğe Comparison of real and mathematical model data of pv systems to monitor the performance with fuzzy logic(Institute of Electrical and Electronics Engineers Inc., 2019) Alparslan, N.C.; Kayabaşı, Ahmet; Rüşen, Selmin EnerToday, photovoltaic (PV) systems are widely used to produce electricity from the sun, which has the greatest potential among renewable energy sources. However, the mathematical correct modeling is very important to develop, plan and use under optimal conditions of green, long-lasting, high-efficiency and low-cost PV systems, which are alternatives to traditional energy generation methods. This project is based on the development of an autonomous system for the creation of a mathematical model of the electrical equivalent circuit of the prototype PV module and the instantaneously monitoring of the performance of this PV module. To test the mathematical model created in this project, the power values were obtained and compared for the reference PV module under laboratory conditions and the accuracy of the created model was tested. In this project, the warning mechanism has been developed in case of any problems with performance monitoring of the prototype PV module system installed by using fuzzy logic. The project aims to ensure that PV systems work in a long time with high efficiency and thus support our country's energy requirement. © 2019 IEEE.Öğe Lattice simulations with chiral effective field theory for light and medium-mass nuclei(Springer, 2020) Elhatisari, SerdarIn this proceedings we present recent results from lattice simulations with chiral effective field theory up to next-to-next-to-next-to-leading order. We discuss our investigation on the degree of locality of the short-range nucleon-nucleon interactions. We also discuss ground state energies of light and medium-mass nuclei as well as new algorithms for the proton and neutron density distributions and other properties. © Springer Nature Switzerland AG 2020.Öğe An application of building automation system based on wireless sensor/actuator networks(IEEE, 2015) Çeltek, Seyit Alperen; Soy, HakkıBuilding automation systems are established to increase people's comfort and security with reduced energy consumption. The integration of wireless technologies into building control promises to make significant simplification in wiring requirements behind reduction of maintenance complexity and setup costs. This paper explores the application potential of wireless sensor/actuator networks in the building automation. We propose a prototype system design with sensor/actuator node structures to exhibit how to apply the wireless sensing and control techniques to the building automation. Proposed system instantly monitors indoor ambient conditions (temperature and humidity, light and motion information) on different floors of the building and automatically controls the home appliances (HVAC and lighting equipments) in an energy-efficient way. We also introduce a communication framework that establish data paths between the sensor and actuator nodes in scalable manner. Our system model can be effectively applied to large scale buildings, such as residences, shopping malls, skyscrapers, hotels, etc.Öğe Cost-effective polythiophene counter electrodes for dye sensitized solar cells(EDP Sciences, 2016) Tolu, Merve Çelik; Çarbaş, Buket Bezgin; Sönmezoğlu, Savaş; Filipowicz, M; Dudek, M; Olkuski, T; Styszko, KDye sensitized solar cells (DSSCs) are most promising devices among third generation solar cells because of low cost, easy production, environmental friendliness, and relatively high conversion efficiency. Counter electrode (CE), which is an important component in DSSCs, functions as an electron transfer agent as well as the regenerator of redox couple. Hitherto, various methods and materials were used to prepare different counter electrodes.Among these materials, conducting polymers have been widely investigated and employed in various applications such as sensors, supercapacitors, energy storage devices, DSSCs and others. In this study, Polythiophene (PTh) conducting polymer was successfully synthesized by electrochemical deposition method, and employed as an alternative to expensive platinum (Pt) CE for DSSC. Besides, PTh conducting polymer was electrochemically deposited via cyclic voltammetry method on FTO substrates. The morphology of the PTh film was characterized by SEM and AFM. Finally, the photovoltaic performance of PTh CE based DSSC was compared with PEDOT CE based device. This new concept along with promising electrocatalytic activity and facile electron transfer provides a new approach to enhance the photovoltaic performances of Pt free DSSCs.Öğe The design and implementation of web of low power wireless temperature monitoring and alarm system(IEEE, 2017) Durgun, Mahmut; Çeltek, Seyit Alperen; Gökrem, Levent; Durgun, YelizThis paper describes the design and implementation of a wireless temperature monitoring and alarm system that can be used for diagnostic purposes in scientific, medical, and industrial applications. The proposed system is designed for easy installation and no gateway required, so it could be use at any location to gather temperature data. The proposed system comprises of a wireless temperature network which is low cost and low power. Each wireless temperature sensor node senses and transmits the variations in the local temperature to the cloud database. The cloud server receives the data and stores it in the table and plotting the variations simultaneously. The user web interface provides graphical data analysis. The web of low-power wireless temperature monitoring and alarm system allows the temperature variations to be viewed and the alarm controlled whenever user want from anywhere in the world. Also, when the large temperature variations occur, system will immediately run alarm which is 90 dB and send a message to user. It is expected that the proposed system will be more useful in biomedical, agricultural and medical areas where the products are sensitive to high temperature or low temperature.Öğe Internet of things based smart home system design through wireless sensor/actuator networks(IEEE, 2017) Çeltek, Seyit Alperen; Durgun, Mahmut; Soy, HakkıThis paper describes the design and implementation of a wireless home automation system that can be used for general purposes in our life. The proposed system is designed for easy installation, so it could be use at any location to gather indoor conditions. The proposed system comprises of a wireless sensor and actuator network which is low cost and low power. Each wireless sensor node senses and transmits the variations in the local temperature, humidity and luminosity to the cloud database. The cloud server receives the data and stores it in the table and plotting the variations simultaneously. The user web interface provides graphical data analysis. The web of low-power wireless home energy management system allows the temperature, humidity and luminosity variations to be viewed and controlled whenever user want from anywhere in the world. Also, when the large variations in temperature, humidity and luminosity value occur, system will run actuators like heater, cooler, ventilation fan and lighting equipments. It is expected that the proposed system will be more useful in our existing home because of not necessary wire connection and massive energy saving potential.Öğe Design and simulation of the hierarchical tree topology based wireless drone networks(IEEE, 2018) Çeltek, Seyit Alperen; Durdu, Akif; Kurnaz, EnderIn drone applications, the drone could send data using telemetry devices or radio frequency module which has a limited range. So, there is no interaction between user and drone after a certain range. In this study, a hierarchical tree topology based wireless drone network is designed and presented to overcome range challenge. Proposed network consist of three main parts; Control Center (CC), Master Drone (MD) and Slave Drones (SDs). The CC as a network manager communicates with just MD via telemetry devices. SDs are explorer drones for the search and rescue application. The data transfer between CC and SDs is provided by MD which is explorer like SDs. This paper clearly shows that the enhancement of the communication range is possible with such this approach. Also the designed drone networks are simulated using V-REP (Virtual Robot Experimentation Platform). According to the simulation results, the proposed drone network system operates quickly, and finds the target in 5 minutes, which classical system not find in 10 minutes. The proposed model clearly shows that an application using a drone is completed in a shorter time with the drone swarm well organized.Öğe Organic Thin Film Phototransistor Based On Arylene Derivatives(Türk Fizik Derneği, 2014) Tozlu, Cem; S. Erten, ElaThe research and development of organic electronic has been impressive grown at last decade because of the cost effective and easy production in comparison with inorganic electronic. The one of organic electronic component is organic thin film phototransistors that are one of the most tremendous progress topics in semiconductor technologies because of their potential for use as low cost alternative to conventional amorphous silicon transistors. Three-terminal phototransistor is a key component for light detection and photoswitching in an optoelectronic circuit. We have prepared naphthalene bis benzimidazole (NBBI) thin-film photo-transistor with top contact/bottom gate geometry in order to sense visible light. The soluble dielectric that is poly-vinyl alcohol (PVA) was used to obtain high transparency of dielectric on indium tin oxide (ITO) to penetrate light through the device. The photosensing characteristics of NBBI based field effect transistor are investigated under 100 mW/cm2 illumination of visible light and dark. The mobility of NBI on PVA dielectric is measured as 10-5 cm2 V-1s-1.
