Yazar "RTEÜ, Mühendislik ve Mimarlık Fakültesi, Enerji Sistemleri Mühendisliği Bölümü" için Mühendislik Fakültesi listeleme
-
Optical and electrical properties of refined carbon derived from industrial tea waste
Akgül, Gökçen; Bıçakcı, Saliha Nur (Iop Publishing Ltd, 2020)The utilization of nano- and well-ordered carbon materials such as graphene especially in carbon-based electrical devices and in energy storage areas is becoming important in terms of developing economical methods and ... -
Parametre kestirimi newton-raphson yöntemiyle yapılan MATLAB/GUI tabanlı fotovoltaik sistem simülatörü
Buldu, İbrahim; Şahin, Mustafa Ergin (2021)Bu çalışmada ilk olarak güneş pilinin çalışma prensibi, bileşenleri ve bağlantı şekilleri ile eşdeğer devre modeli çıkarımı incelenmiştir. Fotovoltaik (FV) güneş pili modülü genel eşdeğer devre modeli matematiksel ... -
Performance assessment of a novel hybrid district energy system
Coşkun, Can; Oktay, Zuhal; Dinçer, İbrahim (Pergamon-Elsevier Science Ltd, 2012)In this paper, a new hybrid system for improving the efficiency of geothermal district heating systems (GDHSs) is proposed. This hybrid system consists of biogas based electricity production and a water-to-water geothermal ... -
Prediction of daily average global solar radiation and parabolic monthly irradiation model parameters for Turkey
Oktay, Zuhal; Coşkun, Can; Ertürk, Mustafa (Springer International Publishing, 2014)The amount of solar radiation falling on the surface of the earth is a very important data for engineers and scientists tomodel the solar energy systems and to design and carry out a performance analysis. Solar global ... -
Production and characterisation of biochar from tea waste and its nickel removal capacity from aqueous solutions
Akgül, Gökçen; Ateş, Ayten; Yaşar, Gökhan; Hatipoğlu, Hakan (Inderscience Publishers, 2017)Biochar, a carbon-rich solid product of slow pyrolysis of biomass, has gained interest due to its application in the various aims. Investigating of adsorption properties of biochar for removing pollutants from waste water ... -
Reclaim of wrecked Bi-Te based materials in peltier modules in thermopower properties By mechanical milling
Çetin, Mehmet; Durak Yüzüak, Gizem; Yüzüak, Ercüment (Sivas Cumhuriyet Üniversitesi, 2023)We thoroughly evaluated the effects of various treatments on the structural and electrical properties of the two as-cast materials, “Sb-doping Bi-Te (p-type)” and “Se-doping Bi-Te (n-type)” which are frequently present ... -
Role of low substrate temperature deposition on Co-Fe thin films
Yüzüak, Gizem Durak; Yüzüak, Ercüment; Nevruzoğlu, Vagif; Dinçer, İlker (Springer Heidelberg, 2019)This paper presents the role of the conventional and Soliton wave model deposition at low substrate temperature (300-100 K) on the structural, electric and magnetic properties of Co35Fe65 thin films deposited by thermal ... -
Self-powered mechanical energy sensor application of SnO2/Ag and PMMA/ITO nanocomposites via triboelectric effect
Durak Yüzüak, Gizem; Çetin, Mehmet; Yüzüak, Ercüment (Gazi University, 2023)The triboelectric nanogenerator is a state-of-the-art device for addressing the growing problem of meeting the world's ever-increasing energy needs by converting mechanical energy into electrical energy. Using the popular ... -
Semi-conductive carbon from industrial tea waste biomass for a p-n junction
Akgül, Gökçen; Tomakin, Murat; Erkaya, Hasan Hüseyin (Springer, 2024)Some semiconducting carbonaceous material was developed from industrial tea waste biomass by catalytic pyrolysis and heteroatom doping; then, a p-n junction was realized on an n-type Si substrate. I-V characteristics of ... -
Sensitivity analysis of implicit correlations for photovoltaic module temperature: A review
Coşkun, Can; Toygar, Uğurtan; Sarpdağ, Özgür; Oktay, Zuhal (Elsevier Sci Ltd, 2017)The module temperature of a PV panel strongly affects the efficient production of electricity. the accurate prediction of module temperature plays an important role in the economic and energy assessment of photovoltaic ... -
Soft magnetic properties of HfxCo100-x thin films
Yüzüak, Gizem Durak; Yüzüak, Ercüment; Elerman, Yalçın (Springer, 2017)HfxCo100-x thin films (in the atomic weight range of x = 30-36) were growth on Si (100) substrates by direct current (DC) magnetron sputtering method. Thin films produced with atomic compositions in this context depicted ... -
The structural, electronic, and magnetic features of Co2Mn1-xAlxTi (0 <= x <= 0.6) heusler alloys
Yüzüak, Gizem Durak; Yüzüak, Ercüment; Dinçer, İlker; Elerman, Yalçın (Springer, 2019)The structural, electronic, and magnetic features of Co2Mn1-xAlxTi (0 <= x <= 0.6) Heusler alloys (HAs) have been systematically investigated by experimental techniques (X-ray powder diffraction, scanning electron microscopy, ... -
Structure and giant inverse magnetocaloric effect of epitaxial Ni-Co-Mn-Al films
Teichert, N.; Kucza, D.; Yildirim, O.; Hetaba, W.; Behler, A.; Yüzüak, Ercüment; Dinçer, İ.; Helmich L.; Boehnke A.; Stöger-Pollach M.; Steiger-Thirsfeld A.; Waske A.; Schattschneider P.; Elerman, Y.; Hütten A. (Institute of Electrical and Electronics Engineers Inc., 2015)In the ongoing search for magnetocaloric materials, Heusler compound based ferromagnetic shape memory alloys (FSMA) of the system Ni-Mn-Z (Z=Sb, Ga, In, Sn) turned out to be very promising due to low cost of the containing ... -
Supercritical conversion of biomass
Akgül, Gökçen (Blackwell Science Publ, 2014)The focus of this chapter is biomass conversion in the supercritical water. the two main processes of the supercritical conversion of biomass are the supercritical water gasification and the supercritical water oxidation. ... -
Supercritical conversion of wastes from wine industry: Effects of concentration, temperature and group 1A carbonates
Gökkaya, Dilek Selvi; Akgül, Gökçen; Sağlam, Mehmet; Yüksel, Mithat; Ballice, Levent (Elsevier, 2021)Supercritical water gasification (SCWG) is a promising waste treatment technology for streams from wine industry, which can eliminate its pollution and produce biofuels simultaneously. In this study, we investigated the ... -
Sustainable graphitic carbon from biomass to be suitable for technological devices
Akgül, Gökçen (TUBİTAK Scientific & Technical Research Council Turkey, 2023)Technological devices are mostly manufactured by conductive and semiconductive materials. As advancement in the last decades, carbon nanomaterials have been explored in electrical/electronic technology due to their unique ... -
Tailoring the structural and magnetic properties of epitaxially growth Ni-Mn-Ga magnetic films by Fe addition
Yüzüak, Gizem. Durak; Yüzüak, Ercüment; Huetten, Andreas (Taylor & Francis Ltd, 2019)Ni-Mn-Ga is one of the major magnetic materials in Heusler family due to its interesting magnetic and structural properties. in this study, the epitaxial 200 nm thin films are prepared by magnetron co-sputtering from a ... -
Thermodynamic analyses and case studies of geothermal based multi-generation systems
Coşkun, Can; Oktay, Zuhal; Dinçer, İbrahim (Elsevier, 2012)In this study, energy and exergy analyses of new geothermal energy based multi-generation systems with seven different combinations for practical applications are performed. The systems considered are mainly examined under ... -
Thickness induced magnetic anisotropic properties of Tb-Fe-Co thin films
Yüzüak, Gizem Durak; Yüzüak, Ercüment; Ennen, Inga; Hütten, Andreas (Elsevier, 2021)The influence of Tb25Fe61Co14 thin film thicknesses varying from 2 to 300 nm on the structural and magnetic properties has been systematically investigated by using of X-ray diffraction, scanning electron microscopy, ... -
Thickness-dependent permanent magnet properties of ZrCo thin films grown on Si with Pt underlayer
Yüzüak, Gizem Durak; Yüzüak, Ercüment; Teichert, Niclas; Huetten, Andreas; Elerman, Yalçın (Springer, 2017)Zr-Co is one of the essential magnetic materials due to its interesting magnetic and structural properties. in this work, we studied the magnetic and structural properties of ZrCo thin films of different thicknesses grown ...