Yazar "0000-0003-4809-2461" için listeleme
-
Advanced exergoeconomic analysis with using modified productive structure analysis: An application for a real gas turbine cycle
Uysal, Cüneyt; Keçebaş, Ali (Elsevier, 2021)In this study, advanced exergoeconomic analysis is performed for a gas turbine cycle located in Inchon/ South Korea. In addition, an approach combining advanced exergy analysis with modified productive structure analysis ... -
Advanced Exergoeconomic Assessment of CO2 Emissions, Geo-Fluid and Electricity in Dual Loop Geothermal Power Plant
Güler, Onur Vahip; Gürbüz, Emine Yağız; Georgiev, Aleksandar G.; Keçebaş, Ali (MDPI, 2023)Binary geothermal power plants (GPPs) are mostly encountered in geothermal fields with medium and low temperatures. The design and operation of dual binary GPPs can be difficult due to the geothermal fluid properties. This ... -
Artificial neural network-based optimization of geothermal power plants
Çetin, Gürcan; Özkaraca, Osman; Keçebaş, Ali (Elsevier, 2022)In the world, due to limited energy resources, low efficiency of renewable energies, complex and costly energy conversion technology, and environmental pollution, human beings are trying to develop and improve innovative ... -
Binary geothermal power plant
Başoğul, Yusuf; Güler, Onur Vahip; Keçebaş, Ali (Elsevier, 2022)In this chapter, information about the binary cycle in geothermal power plants (GPPs) is given. Binary GPPs are thermodynamically closest to a fossil-sourced thermal power plant or nuclear power plant. In the binary GPP, ... -
COMPARATIVE THERMAL AND FLOW ANALYSES OF TWO DIFFERENT PLATE PATTERNS FOR A COMPACT PLATE HEAT EXCHANGER
Gürel, Barış; Keçebaş, Ali; Akkaya, Volkan Ramazan; Göltaş, Merve; Kurtuluş, Karani; Güler, Onur Vahip (Knowledge Center on Organic Rankine Cycle Technology (KCORC), 2022)It is known that the most significant difference of plate heat exchangers (PHEs) from other heat exchangers (HEs) is their heat transfer efficiency. The thinness of the plates separating the two fluids compared to the other ... -
Comprehensive analysis of lightning strike activity on the power line for grid connected solar power plant
Demirel, Emre; Karaca Dolgun, Gülşah; Keçebaş, Ali (Elsevier Ltd, 2022)Transmission lines of the grid-connected solar power plants are affected by lightning strikes. According to the data taken from the malfunction report of the solar power plant located in the Aegean Region of Turkey, the ... -
Comprehensive transient analysis on control system in a photovoltaic power plant under lightning strike
Demirel, Emre; Karaca Dolgun, Gülşah; Keçebaş, Ali (Elsevier, 2022)Solar power plants are installed in high and open places to receive high solar radiation. However, this leaves them vulnerable to lightning strike. Lightning strike affects power plants in two ways, directly and indirectly. ... -
Design and experimental analysis of a parallel-flow photovoltaic-thermal air collector with finned latent heat thermal energy storage unit
Yağız Gürbüz, Emine; Şahinkesen, İstemihan; Tuncer, Azim Doğuş; Keçebaş, Ali (Elsevier Ltd, 2023)In this work, it is aimed to improve the performance of a photovoltaic-thermal (PVT) air collector using finned latent heat thermal energy storage unit. In this regard, four different types of parallel-flow PVT (PPVT) ... -
The effect of temperature distribution on parabolic triangular-based CPVT system performances: Electrical and thermal perspectives
Demircan, Cihan; Bayrakçı, Hilmi Cenk; Keçebaş, Ali; Calise, Francesco; Vicidomini, Maria (Elsevier Ltd, 2023)The performance of photovoltaic (PV) and photovoltaic-thermal (PVT) systems is affected by environmental parameters and working conditions such as, partial shading, refrigerant and operating temperature. This study focuses ... -
Energy and exergy analyses of a coal-fired micro-CHP system coupled engine as a domestic solution
Keçebaş, Ali; İncili, Veysel; Karaca Dolgun, Gülşah; Ural, Tolga (Elsevier Ltd, 2023)In this study, a coal-fired stoker boiler and a beta-type rhombic-drive Stirling engine were manufactured and tested. The performance of the coal boiler with a Stirling engine has been investigated experimentally for the ... -
Enhancing the performance of an unglazed solar air collector using mesh tubes and Fe3O4 nano-enhanced absorber coating
Gürbüz, Emine Yağız; Şahinkesen, İstemihan; Kusun, Barış; Tuncer, Azim Doğuş; Keçebaş, Ali; Gürbüz, Emine Yağız (Elsevier Ltd, 2023)In the current article, it is intended to improve the performance of an unglazed solar air collector using mesh tubes as extended heat transfer surfaces and nano-enhanced black paint as a thermal conductivity booster of ... -
Enhancing the thermal performance of diffusion absorption refrigeration system by using magnesium aluminate spinel oxide compound nanoparticles: an experimental investigation
Sözen, Adnan; Keçebaş, Ali; Yağız Gürbüz, Emine (Springer Science and Business Media Deutschland GmbH, 2021)This article aims to enhance the efficiency of Diffusion Absorption Refrigeration (DAR) systems which operate at low efficiency. This study experimentally investigates the effect of passive heat transfer enhancement by ... -
Environmental impact assessment of a real geothermal driven power plant with two-stage ORC using enhanced exergo-environmental analysis
Gürbüz Yağız, Emine; Güler, Onur Vahip; Keçebaş, Ali (PERGAMON-ELSEVIER SCIENCE LTD, 2022)Geothermal driven power plants (GPPs) with two-stage ORC are mostly used in low-temperature geothermal fields around the World. The environmental impacts of these GPPs create a gap in the literature. In this study, enhanced ... -
Exergy and thermoeconomic analyses of the diffusion absorption refrigeration system with various nanoparticles and their different ratios as work fluid
Yağız Gürbüz, Emine; Keçebaş, Ali; Sözen, Adnan (PERGAMON-ELSEVIER SCIENCE LTD, 2022)The fact that diffusion absorption refrigeration (DAR) systems can also work with low power plants has increased the interest in these cooling systems again. The DAR systems are mostly analyzed using energy analysis. ... -
Experimental Evaluation of a Photovoltaic/Thermal Air Heater with Metal Mesh-Integrated Thermal Energy Storage System
Tuncer, Azim Doğuş; Gürbüz, Emine Yağız; Keçebaş, Ali; Georgiev, Aleksandar G. (MDPI, 2023)he objective of this study is to improve the performance of a hybrid photovoltaic/thermal (PV/T) air heater incorporating a thermal energy storage system (TESS) that uses paraffin and has metallic mesh layers. In the ... -
Experimental Investigation of a Concentrating Bifacial Photovoltaic/Thermal Heat Pump System with a Triangular Trough
Karaca Dolgun, Gülşah; Güler, Onur Vahip; Georgiev, Aleksandar G.; Keçebaş, Ali (MDPI, 2023)The heat absorbed by the heat transfer fluid for cooling a concentrated photovoltaic thermal (CPVT) solar collector can be used for purposes such as residential heating and cooking. Because of the combined production of ... -
Improvement of thermo-hydraulic performance with plate surface geometry for a compact plate heat exchanger manufactured by additive manufacturing
Göltaş, Merve; Gürel, Barış; Keçebaş, Ali; Akkaya, Volkan Ramazan; Güler, Onur Vahip (PERGAMON-ELSEVIER SCIENCE LTD, 2022)Today, compact PHEs produced by additive manufacturing method have emerged when high heat transfer and low-pressure drop are required from PHEs under high temperature and pressure operating conditions. This has resulted ... -
Investigation of power generation from river surface runoff with a novel tilted axis hydrokinetic turbine for off-grid sites
Gökgedik, Harun; Özgür, Arif Emre; Yağız Gürbüz, Emine; Keçebaş, Ali (SAGE Publications Ltd, 2022)In this study, a novel tilted axis hydrokinetic turbine system is presented and tested to generate electricity from surface water streams in off-grid locations. This system consists of a turbine, differential, reducer, and ... -
Investigation of using modified photovoltaic solar panels for battery charge of electric L1 category vehicles
Devlet, Bayram; Ertürk, Mustafa; Yağız Gürbüz, Emine; Keçebaş, Ali (Elsevier Ltd, 2022)In this study, comparative tests of 3 different PV panels were carried out under 3 different scenarios, in order to charge L1 class vehicles. The first regular PV panel (N-PV) was used as a reference for performance ... -
Isıtma Enerji Tüketiminin Erzurum İçin Tahmini
Daşdemir, Ali; Keçebaş, Ali; Türkel, Veysel; Ertürk, Mustafa (Makine Mühendisleri Odası, 2022)Bu çalışmada Devlet Meteoroloji Genel Müdürlüğü'nden Erzurum için temin edi len 1972-2018 yılları arasındaki meteorolojik veri seti kullanılmıştır. Visual Basic programında geliştirilen bir yazılımla dış hava sıcaklığı 18 ...