Güncel Gönderiler: Enerji Sistemleri Mühendisliği Bölümü Koleksiyonu
Toplam kayıt 111, listelenen: 61-80
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Performance assessment of a novel hybrid district energy system
(Pergamon-Elsevier Science Ltd, 2012)In this paper, a new hybrid system for improving the efficiency of geothermal district heating systems (GDHSs) is proposed. This hybrid system consists of biogas based electricity production and a water-to-water geothermal ... -
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
(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 ... -
Inverse magnetocaloric effect of epitaxial Ni-Mn-Sn thin films
(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. ... -
Hydrothermal gasification of Rosa Damascena residues: Gaseous and aqueous yields
(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 ... -
Supercritical conversion of biomass
(Blackwell Science Publ, 2014)The focus of this chapter is biomass conversion in the supercritical water. the two main processes of the supercritical conversion of biomass are the supercritical water gasification and the supercritical water oxidation. ... -
A new approach to determine the outdoor temperature distributions for building energy calculations
(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 ... -
The magnetostructural and magnetocaloric properties of CoMnGe1-xGaxB0.015 (x=0.05 and 0.06) alloys
(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 ... -
The magnetic and magnetocaloric properties of CoMnGe1-xGax alloys
(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 ... -
Fault diagnosis of a vapor compression refrigeration system with hermetic reciprocating compressor based on p-h diagram
(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 ... -
Comparing advanced exergetic assessments of two geothermal district heating systems for residential buildings
(Elsevier Science Sa, 2014)Advanced exergy analysis method has been increasingly utilized in analyzing and assessing the performance of energy-related systems in recent years due to more deeply investigating the exergy destructions. in this study, ... -
The effect of the substitution of Cu for Mn on magnetic and magnetocaloric properties of Ni50Mn34In16
(Elsevier Science Bv, 2014)The influence of Cu substitution for Mn on magnetic and magnetocaloric properties has been investigated in Ni50Mn34-xCuxIn16 (x=1.3 and 1.6) Hensler alloys by using calorimetric and magnetic measurements. the temperature ... -
Investigation of Cd1-xCoxS diluted magnetic semiconductor thin films fabricated by chemical bath deposition method
(Elsevier Science Sa, 2014)Chemical bath deposition method was used for preparation of Cd1-xCoxS thin films. the effects of Co doping and thermal annealing on structural, optical, electrical and magnetic properties of CdS thin films were investigated. ... -
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 ... -
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 ... -
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 ... -
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 ... -
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 ...