Yazar "RTEÜ, Mühendislik ve Mimarlık Fakültesi, Enerji Sistemleri Mühendisliği Bölümü" için Mühendislik Fakültesi listeleme
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Investigation of a hybrid solar and geothermal driven absorption cooling system for district applications
Coşkun, Can; Oktay, Zuhal; Dinçer, İbrahim (Inderscience Enterprises Ltd, 2012)In this paper, a new hybrid geothermal and solar driven absorption cooling system (ACS) is proposed for low-temperature district energy applications. Two approaches are proposed in this study, namely: (a) a new model for ... -
Investigation of biogas and hydrogen production from waste water of milk-processing industry in Turkey
Coşkun, Can; Bayraktar, Murad; Oktay, Zuhal; Dinçer, İbrahim (Elsevier, 2012)This study is conducted to determine the potential for producing both biogas and hydrogen from a milk-processing waste water in Turkey. The results of this study indicate that a maximum of 54.2 million m 3 biogas/yr and ... -
Investigation of passive radar target detection performance improvement by using multiple co-located FM radio transmitters
Tüysüz, Burak (2019)Interest in passive radar systems is increasing because of its hidden operational capabilities, cost effectiveness and low maintenance requirements. The greatest advantage of these systems is that they can detect and follow ... -
The investigation of stability of n-CdS/p-Cu2S solar cells prepared by cold substrate method
Manir, Melih; Nevruzoğlu, Vagif; Tomakin, Murat (IOP Publishing, 2021)In this study, two different n-CdS/p-Cu2S solar cells were prepared by evaporating Cu at different substrate temperatures (200 K and 300 K) by vacuum evaporation method on a single crystal CdS semiconductor. Field emission ... -
Investigation of the electrical properties of Ag/n-Si schottky diode obtained by two different methods
Nevruzoğlu, Vagif; Manir, Melih; Öztürk, Gizem (Korean Assoc Crystal Growth, Inc, 2020)In present study, Ag/n-Si Schottky diodes were produced by vacuum evaporation method at two different substrate temperatures (200 K and 300 K) and structural, optical, electrical properties were investigated. X-ray diffraction ... -
The magnetic and magnetocaloric properties of CoMnGe1-xGax alloys
Dinçer, İlker; Yüzüak, Ercüment; Yüzüak, Gizem Durak; Elerman, Yalçın (Elsevier Science Sa, 2014)The magnetic and magnetocaloric properties of CoMnGe1 Ga-x(x) (0.02 <= x <= 0.063) alloys have been investigated by using calorimetric, X-ray diffraction and magnetic measurements. Our results show that the structural and ... -
Magnetic energy conversion
Yüzüak, Ercüment; Yüzüak, Gizem Durak; Dinçer, İlker; Elerman, Yalçın (Elsevier Inc., 2018)In this study, magnetic and electromagnetic energy conversion of magnetocaloric materials (MCMs) and magnetic refrigeration, which is based on magnetocaloric effect (MCE), is presented in detail and made apprehensible. The ... -
Magnetic features of boron doping on Hf2Co11 thin films
Yüzüak, Gizem Durak; Yüzüak, Ercüment; Elerman, Yalçın (Springer, 2018)The effect of boron (B) doping on the structural and magnetic properties is studied systematically in the Hf2Co11 thin films. the modified crystal microstructure and annealing process enhanced the coercive field up to 1754 ... -
Magneto-impedance in Co35Fe65/Cu/Co35Fe65 single and Bi-layer thin films
Yüzüak, Gizem Durak; Yüzüak, Ercüment; Nevruzoğlu, Vagif (Korean Inst Metals Materials, 2020)The magneto-impedance response in Co35Fe65/Cu/Co35Fe65 thin film magneto-impedance cells deposited by the thermal evaporation method has been studied with single and bilayer structures at the substrate temperature 300 K ... -
Magnetocaloric effect of ball-milled CoMn0.95V0.05Ge nano-powders
Yıldırım, O.; Yüzüak, Ercüment; Tozkoporan, O.; Dincer, I.; Duman, Eyüp (Elsevier B.V., 2021)We have studied the magnetic properties and magnetocaloric effect of ball milled CoMn0.95V0.05Ge alloy by means of temperature and field dependence of magnetisation measurements. CoMn0.95V0.05Ge nano-powders with different ... -
Magnetocaloric effect with very small magnetic hysteresis losses of CoMn1-xTixGe Alloys
Yıldırım, Oğuz; Tozkoparan, Onur; Yüzüak, Ercüment; Elerman, Yalçın; Dinçer, İlker (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 ... -
The magnetostructural and magnetocaloric properties of CoMnGe1-xGaxB0.015 (x=0.05 and 0.06) alloys
Yüzüak, Ercüment; Durak, Gizem; Dinçer, İlker; Elerman, Yalçın (Elsevier Science Bv, 2014)The magnetostructural and magnetocaloric properties of CoMnGe1-xGaxB0.015 (x=0.05 and 0.06 are named Alloy-1 and Alloy-2, respectively) alloys have been investigated by X-ray powder diffraction, calorimetric and magnetization ... -
Magnetostructural transition in Co-Mn-Ge systems tuned by valence electron concentration
Tozkoparan, Onur; Yıldırım, Oğuz; Yüzüak, Ercüment; Duman, Eyüp; Dinçer, İlker (Elsevier Science Sa, 2019)The effects of annealing process and chemical pressure on the structural and magnetocaloric properties of CoMn1-xVxGe (x=0.05 and 0.10) alloys have been studied. Rietveld refinement of XRD patterns revealed that all samples ... -
The magnetothermal characterization of Ni-Cu-Mn-Sn alloy
Yüzüak, Ercüment (Pergamon-Elsevier Science Ltd., 2021)The substantial study presents the structural and magnetic phase transitions in the Ni46.8Cu2.5Mn36.5Sn14.3 alloy through AC susceptibility measurement and heat capacity measurement in a zero magnetic field. To check whether ... -
Modification of natural zeolite with NaOH for removal of manganese in drinking water
Ateş, Ayten; Akgül, Gökçen (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 ... -
Modification of tea biochar with Mg, Fe, Mn and Al salts for efficient sorption of PO43- and Cd2+ from aqueous solutions
Akgül, Gökçen; Maden, Tuğba Bolat; Diaz, Elena; Moreno Jimenez, Eduardo (Iwa Publishing, 2019)There is a requirement to provide more efficient, sensitive, low-cost materials for remediation of contaminated water. Biochar as a sorbent is an effective and low-cost material to remove contaminants in water but its ... -
A new approach to calculation of energy demand and amount of emission according to different indoor temperature
Ertürk, Mustafa; Oktay, Zuhal; Coşkun, Can; Kılıç, Gülenay Alevay; Daşdemir, Ali (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 ... -
A new approach to determine the outdoor temperature distributions for building energy calculations
Coşkun, Can; Ertürk, Mustafa; Oktay, Zuhal; Hepbaşlı, Arif (Pergamon-Elsevier Science Ltd, 2014)This study formulated annual, monthly and hourly ambient temperature distributions for simplifying the calculation of cooling and heating degree-hours. in this regard, Turkey was selected as an application country, of which ... -
New parameters for reduction of heating-based greenhouse gas emissions: A case study
Coşkun, Can; Ertürk, Mustafa; Oktay, Zuhal; Dinçer, İbrahim (Springer New York, 2013)In this study, the effect of indoor temperature for heating on reduction of carbon dioxide emissions in Turkey is studied under various conditions. Two new parameters are introduced, namely, carbon dioxide emission reduction ... -
A novel approach for estimation of photovoltaic exergy efficiency
Akyüz, Ersin; Coşkun, Can; Oktay, Zuhal; Dinçer, İbrahim (Pergamon-Elsevier Science Ltd, 2012)In this study, a novel approach is proposed to determine the maximum amount of exergy from the sun when applied to a conventional photovoltaic (PV) system in order to formulate its exergy efficiency. the variations of ...