Yayın tarihi için Enerji Sistemleri Mühendisliği Bölümü Koleksiyonu listeleme
Toplam kayıt 108, listelenen: 21-40
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Prediction of daily average global solar radiation and parabolic monthly irradiation model parameters for Turkey
(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 ... -
Energy analysis of hydrogen production from a hybrid wind turbine-electrolyzer system
(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 ... -
Investigating the exergetic and environmental effects of subcooling and superheating processes on the performance of direct expansion systems
(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 ... -
A new approach to calculation of energy demand and amount of emission according to different indoor temperature
(Inderscience Enterprises Ltd, 2015)In this study, annual, monthly and hourly ambient temperature distributions are determined and analysed for Karabuk . For each month of the year, variance of outdoor air temperature, monthly and seasonal heating degree ... -
Effects of size reduction on the magnetic and magnetocaloric properties of NdMn2Ge2 nanoparticles prepared by high-energy ball milling
(Wiley-V C H Verlag Gmbh, 2015)A nanostructured NdMn2Ge2 sample is prepared by a high-energy ball-milling technique. the structural and magnetic properties of ball-milled nanopowder have been studied by high-resolution transmission electron microscopy ... -
Influence of film thickness and composition on the martensitic transformation in epitaxial Ni-Mn-Sn thin films
(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 ... -
Enhancement of magnetocaloric effect in CoMn0.9Fe0.1Ge alloy
(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 ... -
Fault and sensor error diagnostic strategies for a vapor compression refrigeration system by using fuzzy inference systems and artificial neural network
(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 ... -
Structure and giant inverse magnetocaloric effect of epitaxial Ni-Co-Mn-Al films
(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 ... -
Entail the new path for permanent magnets: Free-standing Hf-Co thin films
(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 ... -
Modification of natural zeolite with NaOH for removal of manganese in drinking water
(Elsevier Science Bv, 2016)Natural zeolite (NZ) obtained from the Manisa-Demirci region of Turkey was modified by NaOH aqueous solutions (0.5-2.0 mol/dm(3)) and the adsorption capacity of natural and modified forms was determined for manganese ... -
Improving the stability of solar cells using metal-organic frameworks
(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 ... -
Magnetocaloric effect with very small magnetic hysteresis losses of CoMn1-xTixGe Alloys
(SpringerSpringer, 2017)The effects of Ti substitution for Mn and heat treatment on structural, magnetic, and magnetocaloric properties of CoMnGe alloy have been investigated using electron microscopy, X-ray diffraction, calorimetric, and magnetic ... -
A biochar-modified carbon paste electrode
(2017)The present work examıned the use of biochar derived from tea waste as a novel electrode material. For the fabrication of the biochar electrode, suitable amounts of biochar and graphite were mixed with mineral oil for the ... -
Effects of Na doping on CdS thin films and n-CdS/p-Si solar cells via chemical bath deposition method
(Korean Assoc Crystal Growth, Inc, 2017)Un-doped and Na doped CdS thin films were deposited by chemical bath deposition method. the effects of Na doping on structural, optical and electrical properties of CdS thin films and n-CdS/p-Si heterojunction were ... -
Thickness-dependent permanent magnet properties of ZrCo thin films grown on Si with Pt underlayer
(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 ... -
Çoklu ardışık DFBÇ vericilerine ait belirsizlik fonksiyonunun pasif algılama uygulamaları için incelenmesi
(Ieee, 2017)Passive radars are systems that do not have a transmitter of their own but can detect and track targets using "transmitters of opportinuity" in the environment. Particularly in recent years, the work in this area has gained ... -
Soft magnetic properties of HfxCo100-x thin films
(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 ... -
Biochar modification to enhance sorption of inorganics from water
(Elsevier Sci Ltd, 2017)Biochar can be used as a sorbent to remove inorganic pollutants from water but the efficiency of sorption can be improved by activation or modification. This review evaluates various methods to increase the sorption ... -
Hf2Co11 thin films: Rare-earth-free permanent nanomagnets
(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 ...