Yazar "RTEÜ, Mühendislik ve Mimarlık Fakültesi, Enerji Sistemleri Mühendisliği Bölümü" için Mühendislik Fakültesi listeleme
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Energy analysis of hydrogen production from a hybrid wind turbine-electrolyzer system
Akyüz, Ersin; Oktay, Zuhal; Dinçer, İbrahim (Springer International Publishing, 2014)In this study, the energy performance of hybrid wind-hydrogen system is investigated. In addition to energy performance, a cost analysis of hydrogen production is also carried out for stand-alone system for different PEM ... -
Enhancement of magnetocaloric effect in CoMn0.9Fe0.1Ge alloy
Yüzüak, Ercüment; Dinçer, İlker; Elerman, Yalçın; Dumkow, I.; Heger, Beate; Emre, Süheyla Yüce (Elsevier Science Sa, 2015)The magnetic and magnetocaloric properties of CoMn0.9Fe0.1GeCoMn0.9Fe0.1Ge alloy has been investigated by using of electron microscopy, X-ray diffraction, calorimetric, heat capacity and magnetic measurements. the substitution ... -
Enhancing the power factor of p-type BiSbTe films via deposited with/without Cr seed layer
Yüzüak, Gizem Durak; Çiçek, Mert Miraç; Elerman, Yalçın; Yüzüak, Ercüment (Elsevier, 2021)The thermoelectric effect is an efficient method to use waste heat as a primary source of electrical energy. Being a room temperature thermoelectric thin film, p-type BiSbTe is one of the best candidates owing to the ... -
Entail the new path for permanent magnets: Free-standing Hf-Co thin films
Yüzüak, Gizem Durak; Yüzüak, Ercüment; Elerman, Yalçın (Elsevier Science Sa, 2016)In this work, as an alternative to permanent magnets containing rare earth, we report a method for the preparation of rare-earth-free (REF) free-standing magnetic thin films have been obtained by using a basis sacrificial ... -
Erratum to: Improving the electrochemical energy storage gapacity of the renewable carbon derived from industrial tea waste (Russian Journal of Electrochemistry, (2022), 58, 9, (844-854), 10.1134/S1023193522090099)
Karamustafa, Ayşenur; Sözer, Sözer; Oskay, Kürşad Oğuz; Buldu-Aktürk, Merve; Erdem, Emre; Akgül, Gökçen (Springer, 2024)..... -
Estimation of the monthly based hourly wind speed characteristics and the generated power characteristics for developing bidding strategies in an actual wind farm: a case study
Akyüz, Ersin; Demiral, Doğan; Coşkun, Can; Oktay, Zuhal (Springer Heidelberg, 2013)This manuscript proposes a new approach for the estimation of the monthly based hourly wind speed characteristics and the generated power characteristics in an actual wind farm. the proposed approach uses the probability ... -
Exploring the sputtering conditions in ZnO thin film for triboelectric nanogenerator electrode
Yüzüak, Gizem Durak; Karagöz, Cansu; Yüzüak, Ercüment (Wiley, 2022)The new field of applications for triboelectric materials is based on the combination of high physical durability and charge properties of ZnO semi-conductor thin films, which have been explored in this work. ZnO films are ... -
Fabrication of gold thin films on cooled glass substrates
Manir, Melih; Genç, Gamze; Nevruzoğlu, Vagif; Tomakin, Murat; Çetin, Arif E. (Springer, 2024)In this article, gold (Au) thin films were fabricated on glass substrates under vacuum conditions (4.5 x 10(-6) Torr) within a temperature range of 100-300 K, incrementing in steps of 50 K. Analyses through Field Emission ... -
Fault and sensor error diagnostic strategies for a vapor compression refrigeration system by using fuzzy inference systems and artificial neural network
Koçyiğit, Necati (Elsevier Sci Ltd, 2015)A fuzzy inference system (FIS) and an artificial neural network (ANN) were used for diagnosis of the faults of a vapor compression refrigeration experimental setup. A separate EIS was developed for detection of sensor ... -
Fault diagnosis of a vapor compression refrigeration system with hermetic reciprocating compressor based on p-h diagram
Koçyiğit, Necati; Bulgurcu, Hüseyin; Lin, Cheng-Xian (Elsevier Sci Ltd, 2014)The aim of this study is to show how to use the p-h diagram successfully for diagnosing faults in the vapor compression refrigeration cycle. This new approach is able to remove the gap between the information required to ... -
Hf2Co11 thin films: Rare-earth-free permanent nanomagnets
Yüzüak, Gizem Durak; Yüzüak, Ercüment; Elerman, Yalçın (Elsevier Science Sa, 2017)Hf2Co11 thin films were deposited on single crystalline Si(100) substrates by using conventional direct current (DC) magnetron sputtering with a Hf2Co11 alloy target. All films were grown at room temperature with 120W ... -
Hydrothermal gasification of Rosa Damascena residues: Gaseous and aqueous yields
Akgül, Gökçen; Madenoğlu, Tülay Güngören; Cengiz, Nihal U.; Gökkaya, Dilek; Sağlam, Mehmet; Yüksel, Mithat (Elsevier, 2014)The gasification of Rosa Damascena residues - by-products of the rose-oil industry - was investigated under hydrothermal conditions at 500 degrees C and 600 degrees C, 35-45 MPa pressure with a reaction time of 1 h. the ... -
Hydrothermal liquefaction - Upgrading
Hornung, Ursel; Kruse, Andrea; Akgül, Gökçen (Blackwell Science Publ, 2014)... -
Improving the electrochemical energy storage capacity of the renewable carbon derived from industrial tea waste
Karamustafa, Ayşenur; Sözer, Sözer; Oskay, Kürşad Oğuz; Buldu Aktürk, Merve; Erdem, Emre; Akgül, Gökçen (Springer, 2022)Energy storage is gaining a vital role since the usage of portable electric/electronic devices and vehicles have been growing. Capacitors, called as electrochemical double layer capacitors or supercapacitors, find application ... -
Improving the stability of solar cells using metal-organic frameworks
Nevruzoğlu, Vagif; Demir, Selçuk; Karaca, Gökçehan; Tomakin, Murat; Bilgin, Nuray; Yılmaz, Fatih (Royal Soc Chemistry, 2016)Although Cu2S-containing chalcogenide solar cells are appealing and cost-effective for photovoltaics (PVs), these materials suffer from rapid performance degradation as a result of the diffusion of copper ions into the CdS ... -
Influence of film thickness and composition on the martensitic transformation in epitaxial Ni-Mn-Sn thin films
Teichert, Niclas; Auge, Alexander; Yüzüak, Ercüment; Dinçer, I.; Elerman, Yalçın; Krumme, Bernhard; Wende, Heiko; Yıldırım, Oğuz; Potzger, Kay; Hutten, Andreas (Pergamon-Elsevier Science Ltd, 2015)Two series of epitaxial Ni-Mn-Sn thin films of different thickness are investigated for the thickness and composition dependence of the martensitic transformation. Thin films ranging in thickness from 20 to 200 nm (series ... -
Introducing the chemical potential of Cu-Mn-Al alloys for structural, electrical and thermal properties
Yüzüak, Ercüment; Yüzüak, Gizem Durak (Springer, 2024)This study investigates the Martensite transition in Cu-Mn-Al alloys (CMAs) via the use of many methods, including scanning electron microscopy, temperature-dependent X-ray diffraction, resistivity and thermal measurements. ... -
Inverse magnetocaloric effect of epitaxial Ni-Mn-Sn thin films
Yüzüak, Ercüment; Dinçer, İlker; Elerman, Yalçın; Auge, A.; Teichert, Niclas; Hutten, Andreas (Amer Inst Physics, 2013)Epitaxial Ni-Mn-Sn thin films of 200 nm thickness were prepared by magnetron sputtering and deposited onto MgO(100) substrate. They reveal an inverse magnetocaloric effect with a martensitic phase transition around 260 K. ... -
Inverse magnetocaloric effect related to the magnetostructural phase transition in quaternary Ni-Co-Mn-Al alloy
Yüzüak, Ercüment; Yüzüak, Gizem Durak; Elerman, Yalçın (Springer, 2021)The inverse magnetocaloric effect of Ni-Co-Mn-Al quaternary alloy with the relatively low material cost is achieved firstly in a theoretical study (V. Sokolovskiy et al.: J. Appl. Phys., 2020, vol. 127, p. 163901). To ... -
Investigating the exergetic and environmental effects of subcooling and superheating processes on the performance of direct expansion systems
Söğüt, M. Ziya; Karakoç, Hikmet; Oktay, Zuhal; Hepbaşlı, Arif (Springer International Publishing, 2014)Recently, subcooling and superheating applications, which are proposed as an approach for the efficient use of energy, have positive effect on the emission next to increasing the energy efficiency. This study examines ...