Browsing Enerji Sistemleri Mühendisliği Bölümü Makale Koleksiyonu by Title
Now showing items 8-27 of 30
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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 ... -
Optimization of the pool boiling heat transfer in the region of the Isolated bubbles using the ABC algorithm
(ISFAHAN UNIV TECHNOLOGY, 2019)The region of the isolated bubble regime, in which the bubbling starts, is a very significant process for boiling heat transfer. In this study, Artificial Bee Colony algorithm (ABC), which is mainly based on the searching ... -
Performance and economic analysis of a variable refrigerant flow (VRF) system.
(ÇUKUROVA ÜNİV., 2017)This study deals with the exergetic modeling and performance/cost evaluation of a variable refrigerant flow (VRF) air conditioning system. An experimental setup was established to investigate the system performance under ... -
Rheological behavior of sumac (Rhus coriaria L.) extract as affected by temperature and concentration and investigation of flow behavior with CFD
(BIOINTERFACE RESEARCH APPLIED CHEMISTRY,, 2020)The purpose of this study is to investigate the theological properties of sumac extract indifferent concentrations at different temperatures as well as its flow behavior in sudden expansion contraction and at 90 elbow with ... -
The electrocatalytic properties of lithium copper composite in the oxygen reduction reaction
(ELSEVİER, 2014)A new carbon supported lithium-copper cathode catalyst (gel@LiCu) is composed of activated carbon (@) supported gel, LiNO3 and CuCl2 mixture is investigated in the oxygen reduction reaction. The gel@LiCu cathode, which ... -
The importance of the different kinds of energy sources for energy future of Turkey
(EDP SCIENCES., 2016)Nowadays, the need of energy has been increasing day by day with the population growth and the advancements of technology. In this study, the current state of nuclear, wind and solar energy on the worldwide has been generally ... -
The investigation of velocity and temperature changes by CFD analysis for intake stroke of LPG fuel stratified charge engine
(2017)This study numerically investigates the in-cylinder speed and temperature variations for fuel-air mixture intake at the induction stroke by the LPG cylinder of an engine running on the stratified charge principle. The ... -
The noble metal loading binary ironezinc electrode for hydrogen production
(ELSEVİER, 2017)The binary FeZn was electrodeposited on graphite surface for hydrogen evolution reactions. Then, zinc was leached from the surface by an etching method in alkaline solution. A trace amount of platinum and ruthenium ...