Yazar "Hepbaşlı, Arif" için listeleme
-
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 ... -
Investigating the effect of turbine inlet temperature on the exergetic improvement potential of a small turbojet engine
Turan, Önder; Hepbaşlı, Arif; Karakoç, Tahir Hikmet (Institute of Electrical and Electronics Engineers Inc., 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 ... -
Investigating the exergetic and environmental effects of subcooling and superheating processes on the performance of direct expansion systems
Sögüt, M. Ziya; Karakoç, Tahir Hikmet; Oktay, Z.; Hepbaşlı, Arif (Springer International Publishing, 2014)Recently, subcooling and superheating applications, which are proposed as an approach for the efficient use of energy, have positive effect on the emission next to increasing the energy efficiency. This study examines ... -
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 ... -
A Parametric Study of a Piston-Prop Aircraft Engine Using Exergy and Exergoeconomic Analysis Methods
Altuntaş, Önder; Karakoç, Tahir Hikmet; Hepbaşlı, Arif (Taylor & Francis Inc, 2015)In this study, exergetic and exergoeconomic analysis methods are applied to a four-cylinder, spark ignition (SI), naturally aspirated and air-cooled piston-prop aircraft engine in the cruise phase of flight operations. The ... -
Piston-prop uçak motorlarında ekserjoekonomik çevresel optimizasyon
Altuntaş, Önder (Anadolu Üniversitesi, 2011)Isıl sistemlerin optimum çalışma koşullarının belirlenmesi, enerjinin verimli kullanılması açısından büyük bir önem taşımaktadır. Bunun yanı sıra, ekonomik ve çevresel etkilerinin değerlendirilmesi de önemli bir rol ...