Kurum Yazarı "Karakoç, Tahir Hikmet" Scopus İndeksli Yayınlar Koleksiyonu İçin Listeleme
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Exergetic sustainability improvement potentials of a hydrogen fuelled turbofan engine UAV by heating its fuel with exhaust gasses
Kaya, Nevzet; Turan, Önder; Midilli, Adnan; Karakoç, Tahir Hikmet (Pergamon-Elsevier Science LTD, 2016)Exergetic sustainability parameters such as, exergy efficiency, waste exergy ratio, environmental effect factor and exergetic sustainability index were investigated for an UAV having a turbofan engine for the case its ... -
Exergetic Sustainability Indicators as a Tool in Commercial Aircraft: A Case Study for a Turbofan Engine
Aydın, Hakan; Turan, Önder; Karakoç, Tahir Hikmet; Midilli, Adnan (Taylor & Francis Inc, 2015)This paper focuses on the exergetic sustainability indicators of a medium-range commercial aircraft engine for constant reference environment and ground running conditions. First, a detailed exergy analysis of turbofan ... -
Exergetic, Exergoeconomic and Sustainability Assessments of Piston-Prop Aircraft Engines
Altuntaş, Önder; Karakoç, Tahir Hikmet; Hepbaşlı, Arif (Turkish Soc Thermal Sciences Technology, 2012)In this study, the exergetic, exergoeconomic, and sustainability aspects of piston-prop aircraft engines are comprehensively reviewed. These analysis and assessment tools are applied to a four-cylinder, spark ignition, ... -
Exergo-sustainability indicators of a turboprop aircraft for the phases of a flight
Aydın, Hakan; Turan, Önder; Karakoç, Tahir Hikmet; Midilli, Adnan (Pergamon-Elsevier Science LTD, 2013)One of the key challenges for sustainable aviation is to reduce global and local environmental impacts. The scope of this study is analysed and discussed in detail for better understanding of sustainability performances ... -
Exergoeconomic analysis of an aircraft turbofan engine
Turgut, Enis Turhan; Karakoç, Tahir Hikmet; Hepbaşlı, Arif (Inderscience Enterprises LTD, 2009)This study deals with an exergoeconomic analysis of an aircraft turbofan engine utilising the kerosene as fuel. A new parameter is developed to define the trust cost rate. The cost of exergy destruction, the relative cost ... -
Exergoeconomic Environmental Optimization of Piston-Prop Aircraft Engines
Altuntaş, Önder; Karakoç, Tahir Hikmet; Hepbaşlı, Arif (Taylor & Francis Inc, 2015)In this study, exergy, exergoeconomic, exergoenvironmental analyses, and exergoeconomic environmental optimization are applied to a four-cylinder, spark ignition, naturally aspirated and air-cooled piston-prop aircraft ... -
Exergoenvironmental analysis of piston-prop aircrafts
Altuntaş, Önder; Karakoç, Tahir Hikmet; Hepbaşlı, Arif (Inderscience Enterprises LTD, 2012)This study deals with exergoenvironmental analysis of a four-cylinder, spark ignition, naturally aspirated and air-cooled piston-prop aircraft engine for landing takeoff (LTO) and cruise phases. This analysis includes the ... -
Exergy analysis of a cogeneration system through Artificial Neural Network (ANN) method
Yoru, Yimaz; Karakoç, Tahir Hikmet; Hepbaşlı, Arif (Inderscience Enterprises LTD, 2010)The main objective of this study is to apply the Artificial Neural Network (ANN) method to a cogeneration system, located in Izmir, Turkey, for exergetic evaluation purposes. The data used are based on the actual operational ... -
Exergy analysis of a turbofan aircraft engine
Turgut, Enis Turhan; Karakoç, Tahir Hikmet; Hepbaşlı, Arif; Rosen, Marc A. (Inderscience Enterprises LTD, 2009)An exergy analysis is reported for a General Electric turbofan engine (the CF6-80) using sea-level data. The effects on exergy efficiencies and exergy destructions are investigated of modifying the isentropic efficiencies ... -
Exergy analysis of a turbofan engine for an unmanned aerial vehicle during a surveillance mission
Şöhret, Yasin; Dinç, Ali; Karakoç, Tahir Hikmet (Pergamon-Elsevier Science LTD, 2015)In this study, an exergy analysis of a turbofan engine, being the main power unit of an UAV (unmanned aerial vehicle) over the course of a surveillance mission flight, is presented. In this framework, an engine model is ... -
Exergy and energy analysis of an aircraft air cycle machine at designated altitude
Ayaz, Süleyman Kagan; Altuntaş, Önder; Açıkkalp, E.; Karakoç, Tahir Hikmet (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
Çoban, Kahraman; Şöhret, Yasin; Söğüt, Mehmet Ziya; Turan, Önder; Karakoç, Tahir Hikmet (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 ... -
Exergy as a useful tool for the performance assessment of aircraft gas turbine engines: A key review
Şöhret, Yasin; Ekici, Selçuk; Altuntaş, Önder; Hepbaşlı, Arif; Karakoç, Tahir Hikmet (Pergamon-Elsevier Science LTD, 2016)It is known that aircraft gas turbine engines operate according to thermodynamic principles. Exergy is considered a very useful tool for assessing machines working on the basis of thermodynamics. In the current study, ... -
Global warming: Engineering solutions
[No abstract available] -
Green hydrogen and fuel cell systems
Karakoç, Tahir Hikmet; Midilli, Adnan; Turan, Önder (Wiley-Blackwell, 2013)… -
Greenization factor of a turbojet engine
Şöhret, Yasin; Karakoç, Tahir Hikmet (Springer International Publishing, 2017)[No abstract available] -
Hedef programlama ile bütünleşik uçak rotalama ve bakım çizelgeleme
An effective competition at the civil aviation sector could be possible by an effective fleet management. One of two important functions of the fleet management is to define the aircraft routes and plan the aircraft ... -
IGECVI-special issue-Energy and exergy modeling of advance energy systems
Karakoç, Tahir Hikmet; Midilli, Adnan; Turan, Önder (Pergamon-Elsevier Science LTD, 2012)… -
Impact assessment of CO2 emissions caused by exergy losses in the cement sector
Sögüt, M. Ziya; Oktay, Zuhal; Karakoç, Tahir Hikmet (Inderscience Enterprises LTD, 2011)In this study, global effects caused by exergetic inefficiency are examined for rotary kiln of the cement plant. For this purpose, a rotary kiln process of a cement plant in Turkey is modelled, and the annual operation ...