Yazar "Karaca Dolgun, Gülşah" için listeleme
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Analysis of intermittent infrared drying using heat recovery with a novel control methodology
Dolgun, Ekin Can; Karaca Dolgun, Gülşah; Aktaş, Mustafa; Kılıç, Faruk (Wiley, 2020)Drying is one of the most energy consuming process. By using automatic control systems in the industry, a higher quality and energy efficient drying is achieved. There are two main periods in drying process, the constant ... -
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 analysis of new solar-powered sustainable dryers: Alfalfa crop
Karaca Dolgun, Gülşah; Koşan, Meltem; Aktekeli, Burak; Saçılık, Kamil; Aktaş, Mustafa (John Wiley and Sons Inc, 2022)Decreasing carbon emissions is possible with the usage of renewable energy sources. Therefore, the usage of renewable energy has increased in the last decade. Due to the fact that the drying process of agricultural products ... -
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 ... -
Energy and exergy analysis of the temperature and relative humidity controlled infrared convective walnut drying
Karaca Dolgun, Gülşah; Aktaş, Mustafa; Oskaybaş Emlek, Betü; Erinç, Hakan; Dolgun, Ekin Can (John Wiley and Sons Inc, 2022)In this study, energy and exergy analyses of the closed-cycle infrared (IR) convective walnut drying were performed. The effects of the combined heat transfer, product–source distance, and temperature–relative humidity ... -
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 ... -
Infrared convective drying of walnut with energy-exergy perspective
Karaca Dolgun, Gülşah; Aktaş, Mustafa; Dolgun, Ekin Can (Elsevier, 2021)Walnut drying is a time-consuming and an energy-intensive process. To decrease energy consumption a new type drying system was designed. Effect of heat transfer mechanism and bi-directional penetration of the heat to the ... -
Life Cycle Assessment and Cumulative Energy Demand Analyses of a Photovoltaic/Thermal System with MWCNT/Water and GNP/Water Nanofluids
Karaca Dolgun, Gülşah; Koşan, Meltem; Kayfeci, Muhammet; Georgiev, Aleksandar G.; Keçebaş, Ali (MDPI, 2023)The global climate crisis has led society toward cleaner energy sources. Another reason is the limited reserves of fossil energy resources. Efforts to increase the efficiency of photovoltaic modules (PVs) have gained ... -
Life cycle cost assessment for thermal insulation of above-ground spherical container with different capacities in hot fluid storage processes
Karaca Dolgun, Gülşah; Keçebaş, Ali; Ertürk, Mustafa; Daşdemir, Ali (Elsevier Ltd, 2023)Due to environmental and economic reasons, thermal energy saving has gained more importance especially in industry. This study is concerned with the application of insulation to improve thermal energy storage in spherical ... -
Optimal insulation of underground spherical tanks for seasonal thermal energy storage applications
Karaca Dolgun, Gülşah; Keçebaş, Ali; Ertürk, Mustafa; Daşdemir, Ali (ELSEVIER, 2023)The literature deals specifically with compressed gas characteristics, solar radiation, storage volume and heat load fluctuation in aboveground storage and thermal energy storage (TES) applications. To prevent their negative ... -
Performance analysis of a textile based solar assisted air source heat pump with the energy and exergy methodology
Ural, Tolga; Karaca Dolgun, Gülşah; Güler, Onur Vahip; Keçebaş, Ali (Elsevier Ltd, 2021)Solar air collectors are integrated into the air source heat pump in order to increase the performance of the heat pump in cold climate regions. The evaporator air is heated by solar air collectors. In this study, two ... -
Performance analysis of infrared film drying of grape pomace using energy and exergy methodology
Dolgun, Ekin Can; Karaca Dolgun, Gülşah; Aktaş, Mustafa (Elsevier Ltd, 2020)In this study, grape pomace was dried in an infrared film dryer at 40, 45 and 50 °C surface temperatures to investigate the effects of heat transfer mechanism (natural and forced convection) and homogeneous drying on ... -
Performance Assessment of a Novel Solar and Biomass-Based Multi-Generation System Equipped with Nanofluid-Based Compound Parabolic Collectors
İbrahim, Alla Ali; Kayfeci, Muhammet; Georgiev, Aleksandar G.; Karaca Dolgun, Gülşah; Keçebaş, Ali (MDPI, 2022)The current paper proposes a novel multi-generation system, integrated with compound parabolic collectors and a biomass combustor. In addition to analyzing the comprehensive system in a steady state, the feasibility of ... -
Performance evaluation of novel photovoltaic and Stirling assisted hybrid micro combined heat and power system
İncili, Veysel; Karaca Dolgun, Gülşah; Georgiev, Aleksandar; Keçebaş, Ali; Çetin, Numan Sabit (PERGAMON-ELSEVIER SCIENCE LTD, 2022)Since both heat and electricity are produced in the cogeneration system, residential heating can be done independently from the grid. Stirling engine is proposed to use for rural areas where electricity cannot reach. It ...
