Konu "Energy" için Havacılık ve Uzay Bilimleri Fakültesi listeleme
Toplam kayıt 23, listelenen: 1-20
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Application of thermodynamic laws on a military helicopter engine
(Pergamon-Elsevier Science LTD, 2017)By definition, a turboshaft engine is simply a gas turbine used to deliver shaft power such as to a helicopter rotor. This paper presents the energetic and exergetic analyses of a turboshaft engine which is used for military ... -
Assessment of degradation effects for an aircraft engine considering exergy analysis
(Pergamon-Elsevier Science LTD, 2017)Despite the improvements in engine technology, the combustion processes and wear occurred in engine components affect performance adversely. The turbine and compressor fouling, degradation mechanisms such as erosion, ... -
Customised application of exergy analysis method to PW120A turboprop engine for performance evaluation
(Inderscience Enterprises LTD, 2016)In this paper, first and second laws of thermodynamics are applied on a turboprop engine of a regional aircraft. Performance parameters of the engine are assessed under take-off conditions and maximum power settings. Energy ... -
Determination of optimum insulation thickness for building's walls with respect to different insulation materials: a case study of International Hasan Polatkan Airport terminal
(Inderscience Enterprises LTD, 2018)The systems in which energy is most intensely used in airport terminal buildings are HVAC systems. More efficient heating and cooling systems and the performance of the building envelope can provide significant reductions ... -
Dynamic modeling of exergy efficiency of turboprop engine components using hybrid genetic algorithm-artificial neural networks
(Pergamon-Elsevier Science LTD, 2015)Genetic algorithm is utilized to design the optimum initial value of parameters and topology of the artificial neural network which is trained by applying the improved backpropagation algorithm using momentum factor so as ... -
Energetic and exergetic efficiency modeling of a cargo aircraft by a topology improving neuro-evolution algorithm
(Pergamon-Elsevier Science LTD, 2016)An aircraft is a complex system that requires methodologies for an efficient thermodynamic design process. So, it is important to gain a deeper understanding of energy and exergy use throughout an aircraft. The aim of this ... -
Energetic and exergetic performance assessment of a turboprop engine at various loads
(Inderscience Enterprises LTD, 2013)It is necessary to understand the mechanisms that have enabled improvements of performance parameters such as thermodynamics efficiencies, thrust or power, specific fuel consumption and specific power in aero engines, thus ... -
Energy and exergy (ENEX) analyses of a MD-80 aircraft
(International Journal of Mechanical Engineering and Robotics Research, 2016)The growth in demand for air transport is a problem for the global and local environment. There are, moreover, fundamental conflicts with sustainable development objectives. Sustainability demands a sustainable supply of ... -
Entropy Generation Calculation of a Turbofan Engine: A Case of CFM56-7B
(Walter De Gruyter GMBH, 2018)Entropy generation and energy efficiency of turbofan engines become greater concern in recent years caused by rises fuel costs and as well as environmental impact of aviation emissions. This study describes calculation of ... -
Exergetic performance of a low bypass turbofan engine at takeoff condition
(Springer International Publishing, 2014)In this article, exergetic methodology is applied for a low bypass turbofan engine at maximum power setting. The engine is a low-bypass (0.96–1) turbofan engine and its variants fitted to the 737-100/200 all comprise six ... -
Exergy analysis of an air-blasted combustor: an application for atmospheric test rig condition
(Inderscience Enterprises LTD, 2016)Combustion of fuel finds its importance in heating, power production and transportation. The main objective of this study is to assess the performance of an air-blasted combustor using the exergy at different combustor ... -
Exergy and energy analysis of an aircraft air cycle machine at designated altitude
(Springer Verlag, 2018)In this paper, energy and exergy analyses are performed on an aircraft air cycle machine. Air cycle machine is essential to ventilate aircraft cabin during commercial flights. Exergy destruction rates and energy parameters ... -
Exergy Approach to Evaluate Performance of a Mini Class Turboprop Engine
(Springer International Publishing Ag, 2017)In this chapter, performance assessment of a mini class turboprop engine is presented. Exergy analysis is used for this purpose on the basis of applicability on thermal systems. As a result of the component-based exergy ... -
An exergy way to quantify sustainability metrics for a high bypass turbofan engine
(Pergamon-Elsevier Science LTD, 2015)As fuel efficiency becomes a greater concern in aero engine design and operation. To meet this need, a new methodology is being developed here that proposes the use of exergetic metrics for mapping the exergy flows throughout ... -
Exergy-based sustainability analysis of a low-bypass turbofan engine: A case study for JT8D
(Elsevier Science BV, 2016)The growth in demand for air transport is a problem for the global and local environment. There are, moreover, fundamental conflicts with sustainable development objectives. Sustainability demands a sustainable supply of ... -
Investigation of effects of hydraulic balance in mechanical system based on energetic and exergetic efficiency in industrial buildings
(Inderscience Enterprises LTD, 2016)In the total energy demand and management for heating and cooling systems in industrial processes and commercial buildings for different zones, provision of the appropriate balance flows with hydraulic and thermal balancing ... -
Investigation of environmental and exergetic performance for coal-preparation units in cement production processes
(Pergamon-Elsevier Science LTD, 2012)The main objectives of the present study are to perform energy and exergy analyses of a coal-preparation unit in a cement plant and investigate the effect of varying dead state (ambient) temperatures on exergy efficiency. ... -
A machine learning model to predict NOx emission for turbofan engines of commercial aircraft during idle condition
(Advanced Engineering Solutions, 2016)A machine learning modelling approach to predict nitrogen oxides (NOx) emission was accomplished for turbofan engines of commercial aircraft during the idle condition utilizing International Civil Aviation Organization ... -
A new approach for compressor and turbine performance map modeling by using ANFIS structure
(Springer International Publishing, 2014)Aviation is the one of the continually developing sector in transportation area. People prefer to travel with more comfortable, more economic, time saver and safety vehicles during their travel. According to this selection, ... -
Numerical calculation of energy and exergy flows of a turboshaft engine for power generation and helicopter applications
(Pergamon-Elsevier Science LTD, 2016)Fuel efficiency of aircraft and helicopter becomes greater concern in recent years caused by rising fuel costs and as well as environmental impact of aviation emissions. Modern helicopters, however, highly complex systems ...