Kurum Yazarı "Karakoç, Tahir Hikmet" WoS İndeksli Yayınlar Koleksiyonu İçin Listeleme
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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 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, ... -
Exergy indicators of a low-emission aero-engine combustor
Şöhret, Yasin; Karakoç, Tahir Hikmet (Emerald Group Publishing LTD, 2018)Purpose It is essential to develop more environment-friendly energy systems to prevent climate change and minimize environmental impact. Within this scope, many studies are performed on performance and environmental ... -
Green hydrogen and fuel cell systems
Karakoç, Tahir Hikmet; Midilli, Adnan; Turan, Önder (Wiley-Blackwell, 2013)… -
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 ... -
Indicators of Sustainability Energy Management Based on Energy Audit for Hotels
Öz, M. E. U.; Sögüt, M. Ziya; Karakoç, Tahir Hikmet (Springer International Publishing Ag, 2018)… -
Investigating the Effect of Turbine Inlet Temperature on the Exergetic Improvement Potential of a Small Turbojet Engine
Turan, Önder; Hepbaşlı, Arif; Karakoç, Tahir Hikmet (IEEE, 2017)This paper analyzes and evaluates exergetic improvement rate (IPex) of the components of a small turbojet engine with various turbine inlet temperatures. The engine consists of an inlet, starter generator, a centrifugal ... -
Investigation of effects of hydraulic balance in mechanical system based on energetic and exergetic efficiency in industrial buildings
Sögüt, M. Ziya; Mutlu, Hamit; Karakoç, Tahir Hikmet; Isler, Namik (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
Sögüt, M. Ziya; Oktay, Zuhal; Karakoç, Tahir Hikmet; Hepbaşlı, Arif (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. ... -
Investigation of environmental impact caused by aircraft engines
Altuntaş, Önder; Karakoç, Tahir Hikmet; Hepbaşlı, Arif (Inderscience Enterprises LTD, 2013)The environmental effects of exhaust gas emissions from different types of spark ignitions (SIs) - naturally aspirated and air-cooled from piston-prop aircraft engines - at the landing and take-off (LTO) phase of flight-based ... -
Investigation of thermodynamic performance based on the humidity effect in the aircraft environmental control systems
Tuzemen, Seda; Altuntaş, Önder; Söğüt, Mehmet Ziya; Karakoç, Tahir Hikmet (Inderscience Enterprises LTD, 2015)Some environmental parameters, such as pressure, temperature, humidity and velocity, of air are important for passengers, stayed in aircraft cabin. These values change with altitudes, also atmospheric conditions. The ...