Yazar "Karakas, Yusuf" seçeneğine göre listele

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    INTEGRATING SOLAR TOWER TECHNOLOGY FOR INDUSTRIAL PROCESS HEAT
    (Begell House Inc., 2024) Karakas, Yusuf; Karabetoglu, Sevan; Okutucu-Ozyurt, Tuba
    Global energy production heavily relies on fossil fuel technologies, contributing to increased greenhouse gas emissions and climate change. A critical shift to renewable energy technologies, including solar tower technology, is required to address these issues. This study focuses on the integration of solar tower technology into industrial process heat, in particular on the design, modeling, analysis, and evaluation of solar tower that uses molten salt. According to the study's data, Gaziantep, Turkey, is an ideal location for a solar tower facility due to its combination of high direct normal irradiance (DNI) values, reaching 5.39 kWh/m2/day, and flat terrain. The investigation involves developing a 50 MW solar tower at Gaziantep utilizing SolarPILOT and System Advisor Model (SAM), with a primary focus on processes requiring 200°C steam production with plate heat exchanger. Analytical and numerical models provide critical insights into the design and performance of the solar tower. The design of the heliostat field, receiver dimensions, and thermal storage are all configured for performance of solar tower. In order to achieve an appropriate solar tower, the study highlights the importance of the solar multiple, direct normal irradiation value, and thermal storage duration. The results of the study, the Gaziantep solar tower generates 526.38 GWhth of heat energy in the first year, with a capacity factor of 26.3%. The calculated levelized cost of heat (LCOH) 4.98 ¢USD/kWhth demonstrates the Gaziantep solar tower's cost analysis when all construction, maintenance, and operating costs are taken into account. Furthermore, as compared to natural gas consumption, the technology contributes to environmental sustainability by preventing the release of 116,462 tons of CO2 emissions annually. In conclusion, the present study provides for the implementation of solar tower in medium-temperature (200-400°C) industrial processes, as well as global objectives to reduce emissions and transition towards renewable energy. © 2024, Begell House Inc. All rights reserved.
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    Overall approach to building LCA and recent studies in Türkiye
    (Taylor & Francis Ltd, 2024) Mercan, Muhammed Cihat; Kosma, Elvan Burcu; Karakas, Yusuf; Akyuz, Serra Melek; Gul, Fuat Berke; Goruryilmaz, Mehmet Turan; Unal, Berat Berkan
    Life Cycle Assessment (LCA) has emerged as a vital approach for evaluating the environmental impact of building materials, products, energy consumption, and emissions throughout a building's lifespan, providing a comprehensive measure of building sustainability. In recent years, T & uuml;rkiye's building sector has witnessed a substantial increase in the adoption of LCA, aligning with the nation's sustainability endeavours. This paper conducts a comprehensive review of 33 studies published within the last decade, focusing on residential and commercial buildings as well as industrial facilities in T & uuml;rkiye. This study, therefore, fills an important gap by encompassing all common aspects of buildings within its LCA framework. Notably, LCA studies exhibit variability based on factors such as building type, geographical location, impact categories, system boundaries, and the specific LCA methodology employed. T & uuml;rkiye's building sector is embracing LCA as a sustainability tool, despite challenges like lack of data and method standardization. The growing adoption of LCA is poised to contribute to enhanced sustainability practices in T & uuml;rkiye's building industry, shaping a more environmentally conscious future. This research underscores the importance of standardized methodologies to facilitate a more cohesive and comparable analysis across diverse LCA studies.