Konu "Efficiency" için Fakülteler listeleme
Toplam kayıt 33, listelenen: 1-20
-
Analysing the performance, fuel cost and emission parameters of the 50 MW simple and recuperative gas turbine cycles using natural gas and hydrogen as fuel
(Elsevier, 2020)In the present study, firstly, the power production, thermal and exergy efficiencies were calculated for the simple and recuperative gas turbine cycles at constant power production (50 MW) and turbine outlet temperature ... -
A comparative thermo-ecological performance analysis of generalized irreversible solar-driven heat engines
(Elsevier, 2017)In this study, an analysis based upon thermo-ecology criteria has been performed for an irreversible solar-driven heat engine. In the conceived heat engine, heat is transferred by using simultaneous radiation and convection ... -
Data-Driven Surrogate-Assisted Optimization of Metamaterial-Based Filtenna Using Deep Learning
(MDPI, 2023)In this work, a computationally efficient method based on data-driven surrogate models is proposed for the design optimization procedure of a Frequency Selective Surface (FSS)-based filtering antenna (Filtenna). A Filtenna ... -
The Determinants of Airline Operational Performance: An Empirical Study on Major World Airlines
(Sosyoekonomi, 2020)The air transport industry is a dynamic sector and operates in a dynamic environment. This situation leads to intense competition among airlines and, consequently, to a search for new methods to improve the operational ... -
Effect of Exhaust Backpressure on Performance of a Diesel Engine: Neural Network based Sensitivity Analysis
(Korean Society of Automotive Engineers, 2022)Various types of emission-reducing systems or waste heat recovery systems installed on exhaust pipes of internal combustion engines are a source of high exhaust gas backpressure. Increased backpressure can cause negative ... -
Efficient AC-DC power factor corrected boost converter design for battery charger in electric vehicles
(Elsevier, 2021)With the widespread use of electric vehicles (EVs), the design of a highly quality and efficient battery charger has become an important research topic. In this study, an efficient AC-DC power factor corrected (PFC) boost ... -
Efficient AC-DC power factor corrected boost converter design for battery charger in electric vehicles
(Elsevier, 2021)With the widespread use of electric vehicles (EVs), the design of a highly quality and efficient battery charger has become an important research topic. In this study, an efficient AC-DC power factor corrected (PFC) boost ... -
Energetic and Exergetic Performance Investigation of Different Topologies for Hybrid Fuel Cell Vehicles
(Wiley-Hindawi, 2023)The use of green energy has increased day by day. Environmentally friendly hybrid electric vehicles with low CO2 emissions have gained public attention. However, most battery electric vehicles are still having range problems, ... -
Evaluation of an urban area in cold climate with a new perspective: exergoeconomic analysis
(Inderscience Publishers, 2020)The exergoeconomic analysis of an urban area is introduced in this study, performed in an annual energy interaction basis. The investigated period covers the year of 2016, and indoor and outdoor temperatures, construction ... -
Exergetic Simulation and Performance Analysis of the Effect of Flow Patterns in PEMFCs
(Int Center Applied Thermodynamics, 2019)In this study, 6 different novel flow channels of the "proton exchange membrane" (PEM) type fuel cells were designed and modeled, while evaluations were conducted on three-dimensional channels of various designs using ... -
Exergy analysis of a natural gas fuelled gas turbine based cogeneration cycle
(Inderscience Enterprises Ltd, 2019)In this paper, the monthly-based annual performance of a natural gas fuelled gas turbine-based cogeneration cycle was analysed. The performance analysis of the system was investigated in three steps. First, the real system ... -
Improved MPPT method to increase accuracy and speed in photovoltaic systems under variable atmospheric conditions
(Elsevier Sci Ltd, 2019)The changes in temperature and radiation cause visible fluctuations in the output power produced by the photovoltaic (PV) panels. It is essential to keep the output voltage of the PV panel at the maximum power point (MPP) ... -
Improvement of energy harvesting capability in grid-connected photovoltaic micro-inverters
(Taylor & Francis, 2020)In this paper, a multi-stage micro-inverter system depending on a dual neutral point clamped (D-NPC) inverter is developed for low power photovoltaic (PV) applications. The primary objectives of this study are determined ... -
Investigation of EMI and UV-IR shielding properties of Kevlar and polyester/elastane nanocomposite fabrics coated by ECR and evaporation methods
(Taylor and Francis, 2023)In this study, it is aimed to investigate Electromagnetic Shielding Interference (EMI) and Ultraviolet-Infrared (UV-IR) shielding behavior of nanocomposite textile fabrics produced by using Electron Cyclotron Resonance ... -
Metamaterial-based high efficiency portable sensor application for determining branded and unbranded fuel oil
(Indian acad Sciences, 2018)In this study, we have developed an efficient metamaterial (MTM)-based portable fuel oil sensor in order to distinguish branded and unbranded fuel-oil samples. Electromagnetic properties of the fuel-oil samples are ... -
Multiple-criteria approach of the operational performance evaluation in the airline industry: Evidence from the emerging markets
(Institute for Economic Forecasting, 2020)The main objective of this study is to develop a multiple-criteria decision-making (MCDM) model in order to evaluate the operational performance of airlines operating in emerging markets. In this respect, the manuscript ... -
Non-fullerene organic photovoltaics based on thienopyrroledione comprising random copolymers; effect of alkyl chains
(Elsevier, 2021)Two new random donor-acceptor (D-A) copolymers, signed as P1 and P2, were designed and synthesized. Electrochemical and spectroelectrochemical measurements were performed to investigate absorption, energy levels, electronic ... -
Numerical thickness optimization study of CIGS based solar cells with wxAMPS
(Elsevier GmbH, 2016)In this paper, a numerical investigation of the effects of thickness of absorber and buffer layers for a typical CIGS based solar cell was carried out for the first time, employing the wxAMPS software which is a new ... -
Optimisation and exergy analysis of an organic Rankine cycle (ORC) used as a bottoming cycle in a cogeneration system producing steam and power
(Elsevier, 2021)In this study, the advantages of the ORC were used to improve overall performance of a simple gas turbine (GT) located in a wood production facility. In addition to ORC, a steam boiler (SB) is also coupled with the GT to ... -
Optimising ship manoeuvring time during port approach using a decision support system: a case study in Turkey
(Taylor and Francis Ltd., 2022)Any cost reductive initiative is significant to contribute to the overall viability and economic sustainability of the industry. Therefore, it is worthy to study time and cost efficiency of ship manoeuvring when approaching ...