Browsing Enerji Sistemleri Mühendisliği Bölümü Makale Koleksiyonu by Title
Now showing items 1-20 of 30
-
6-Anahtarlı 3-seviyeli eviricide uzay vektör darbe genişlik modülasyon tekniğinin uygulaması
(DÜZCE ÜNİV., 2017)Uzay vektör darbe genişlik modülasyonu (UVDGM) tekniği bu çalışma ile 6-anahtarlı 3-seviyeli evirici üzerinde denenmiştir. Evirici topolojisinde 6 adet IGBT yarıiletkenanahtar kullanılarak eviricinin her bir çıkış uçlarına ... -
A new catalyst of AlCu@ZnO for hydrogen evolution reaction
(OSMANİYE KORKUT ATA ÜNİVERSİTESİ, 2018)Thin films of undoped ZnO, Al-doped ZnO, Cu-doped ZnO, and AlCu@ZnO deposited on indium tin oxide were performed by the sol-gel spin coating method. The prepared ZnO thin films were investigated for their structural and ... -
Analysis with computational fluid dynamics software of a Shell-and-Tube heat exchanger using molten salt as heat transfer fluid
(GAZI UNIV., 2018)In this present study, heat transfer performance of a shell and tube heat exchanger used molten salt is analyzed by a computational fluid dynamic (CFD) programing. The model is prepared regard as a literature study that ... -
Copper – Zinc and Copper-Iron Binary Electrode for Hydrogen Evolution Reaction
(SAKARYA ÜNİV., 2018)The different coatings with high hydrogen evolution reaction (HER) durability activity were prepared by electrodeposition. Iron, copper and zinc alloys were deposited on graphite electrode. The binary coating prepared ... -
Determination of Weibull parameters by different numerical methods and analysis of wind power density in Osmaniye, Turkey
(SHARIF UNIV TECHNOLOGY, 2017)In this study, the potential of wind energy in Osmaniye Region has been analysed statistically on the basis of information that has been measured hourly between the years 2009 to 2013. The two-parameter Weibull Distribution ... -
Determination of weibull parameters using the standard deviation method and performance comparison at different locations
(SHARIF UNIV TECHNOLOGY, 2020)This paper analyzed the harmony of the Weibull Distribution Function (WDF) and the real data obtained from three different locations. The Standard Deviation Method (SDM) was used to calculate the coefficients of the WDF ... -
Determination of wind potential of a specific region using Artificial neural networks
(Advanced Technology and Science, 2017)There is a widespread trend in alternative energy sources in today's world. Achieving energy without harming the environment has been the most important target of the countries in recent years. For this reason, it is ... -
Effect of higher order taylor series expansion terms of the ni-prim on the solution accuary of 2 nd lastic prblems.
(PAMUKKALE UNIV., 2015)In this study, effects of higher order Taylor series expansion terms in the nodal integration scheme of radial point interpolation method (NI-RPIM) are investigated on the solution accuracy of 2D elastic problems. The nodal ... -
Effective estimation of hourly global solar radiation using machine learning algorithms
(HINDAWI LTD, ADAM HOUSE,, 2020)The precise estimation of solar radiation is of great importance in solar energy applications with respect to installation and capacity. In estimate modelling on selected target locations, various computer-based and ... -
Electrocatalysis of Ni-promoted Cd coated graphite toward methanol oxidation in alkaline medium
(ELSEVİER, 2012)The nickel–cadmium (Ni-promoted Cd) catalyst for using direct methanol fuel cell (DMFC) applications is electrochemically deposited on a graphite substrate. The activity of methanol oxidation is assessed by recording ... -
Electrocatalytic oxidation of methanol on PtNiZn electrode in alkaline medium
(SPRİNGER, 2011)In this study, a platinum electrode was coated with NiZn layer (Pt/NiZn) in a nickel zinc bath by electrodeposition for use as anode material for methanol electrooxidation in alkaline solution. The electrode prepared was ... -
Electrocatalytic oxidation of methanol on Ru deposited NiZn catalystat graphite in alkaline medium
(ELSEVİER, 2013)The methanol oxidation on C/NiZn-Ru electrode in a 1.00 M KOH and 1.00 M KOH + 1.00 M methanolsolutions at different scan rates and temperatures was studied by the cyclic voltammetry (CV), electro-chemical impedance ... -
Electrochemical performance of lithium molybdenum composite catalyst in oxygen reduction reaction
(ELSEVİER, 2015)A gel/LiMo catalyst was prepared as a cathode material via the solegel process and applied calcination at different times. The influence of calcination times, properties and the electrochemical performance of the catalyst ... -
Energy and exergy analysis of an organic Rankine-Brayton combined cycle
(GAZI UNIV, 2018)In this study, thermodynamic analysis of reheat and intercooled Brayton cycle combined with organic Rankine cycle (ORC) using waste heat from intercooler in Brayton cycle as heat source is presented. The effects of different ... -
Entropy Generation for Nonisothermal Fluid Flow: Variable Thermal Conductivity and Viscosity Case
(HINDAWI PUBLISHING CORPORATION, 2013)This paper investigates the entropy generation of a nonisothermal, incompressible Newtonian fluid flowing under the effect of a constant pressure gradient in plane Poiseuille flow. The effects of variable viscosity and ... -
Experimental and quantum chemical studies on corrosion inhibition effect of 5,5 diphenyl 2-thiohydantoin on mild steel in HCl solution
(ELSEVİER, 2016)The inhibition efficiency of 5,5 diphenyl 2-thiohydantoin (DPTH) against mild steel (MS) corrosion has been investigated in 0.1 M HCl solution by using electrochemical techniques and quantum chemical calculations. The ... -
Fe-Cu coated nickel mesh usage as cathode catalyst for hydrogen evolution reaction
(ELSEVİER, 2018)Nickel mesh electrodes were used as the working electrode. Iron and copper were electrochemically deposited on the nickel mesh in different amounts. When electrochemical coatings had been carried out, different currents ... -
First and second law evaluation of combined brayton-organic rankine power cycle
(YILDIZ TECHNICAL UNIV., 2020)In the present work, we have conducted thermodynamic analysis of an organic Rankine cycle (ORC) using waste heat from intercooler and regenerator in Brayton cycle with intercooling, reheating, and regeneration (BCIRR). ... -
Investigation of nanofluid flow characteristics and wall stress concentration locations in a 3D channel with sharp edge rectangular ribs
(YILDIZ TECHNICAL UNIV, 2017)Flow regimes in various channels can introduce different responses that interact with inside of channel walls. Hence both flow characteristic and its effect on wall surfaces should be investigated, especially for a new ... -
Investigation of noble metal loading CoWZn electrode for HER
(ELSEVİER, 2017)It is important to metal deposition on the electrode surface to increase the electrocatalytic activity of the electrodes. CoWZn coated the graphite rod was used to prepare the cathode electrode. Moreover, then Pt and Ru ...