Πλοήγηση ανά Συγγραφέα "Stamatis, A. G."
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Biotechnological Utilization with a Focus on Anaerobic Treatment of Cheese Whey: Current Status and Prospects
Chatzipaschali, A. A.; Stamatis, A. G. (2012)Cheese whey utilization is of major concern nowadays. Its high organic matter content, in combination with the high volumes produced and limited treatment options make cheese whey a serious environmental problem. However, ... -
Data analysis and performance model calibration of a small turbojet engine
Bakalis, D. P.; Stamatis, A. G. (2012)The experience gained during the development of a small turbojet engine simulation model is presented in this article. The calibration of an initial model has been proven inadequate for producing reasonable values for some ... -
Evaluation of gas path analysis methods for gas turbine diagnosis
Stamatis, A. G. (2011)In the present paper, limitations concerning three implementations of gas path analysis (GPA) methods are investigated and their diagnostic effectiveness is evaluated. The methods were tested for different sets of faults ... -
Exergetic and economic analysis of a cheese whey wastewater anaerobic treatment plant with a cogeneration system
Chatzipaschali, A. A.; Stamatis, A. G. (2014)This paper investigates the extension of an existing steam production plant in order to cover both thermal and electrical needs of a factory. The plant uses biogas produced from cheese whey (CW) wastewater anaerobic digestion ... -
Exergy analysis of a hybrid micro gas turbine fuel cell system based on existing components
Bakalis, D. P.; Stamatis, A. G. (2012)A hybrid system based on an existing recuperated micro-turbine and a pre-commercially available high temperature tubular solid oxide fuel cell is modeled in order to study its performance. Individual models are developed ... -
Extended instrumentation and model calibration for a small micro-turbine
Bakalis, D. P.; Stamatis, A. G. (2010)In this paper the calibration of a model representing a real small turbojet engine is presented. The development of the model was based on a modular general approach using adaptive modeling principles. Calibration of the ... -
Full and part load exergetic analysis of a hybrid micro gas turbine fuel cell system based on existing components
Bakalis, D. P.; Stamatis, A. G. (2012)The paper deals with the examination of a hybrid system consisting of a pre-commercially available high temperature solid oxide fuel cell and an existing recuperated microturbine. The irreversibilities and thermodynamic ... -
Improving hybrid SOFC-GT systems performance through turbomachinery design
Bakalis, D. P.; Stamatis, A. G. (2014)A methodology to improve the performance of a hybrid solid oxide fuel cell gas turbine (SOFC-GT) system for the whole operating range is proposed. The method suggests a way to estimate the geometric parameters of the ... -
Incorporating available micro gas turbines and fuel cell: Matching considerations and performance evaluation
Bakalis, D. P.; Stamatis, A. G. (2013)The present paper aims to study the performance of the hybrid systems based on the fuel cell stack developed by Siemens-Westinghouse coupled with four different commercially available recuperated micro-turbines. The different ... -
The influence of heat transfer effects on turbine performance characteristics
Stamatis, A. G.; Mathioudakis, K. (2006)A method allowing the evaluation of the effects related to heat transfer to the turbine blades on its performance characteristics is presented. The effects investigated are the change of passage dimensions, resulting from ... -
Optimization methodology of turbomachines for hybrid SOFC-GT applications
Bakalis, D. P.; Stamatis, A. G. (2014)The objective of this work is to suggest a method for optimizing the compressor and turbine components in hybrid SOFC-GT (Solid Oxide Fuel Cell - Gas Turbine) applications. The hybrid system evaluations are made on the ... -
Optimum use of existing sensor information for gas turbine diagnostics
Stamatis, A. G. (2008)Gas Path Analysis, (GPA), has been proven a powerful tool for Gas Turbine fault detection and isolation. Restriction on GPA effectiveness is mainly due to limited instrumentation imposed by sensor technology and plant ... -
Performance simulation of a hybrid micro gas turbine fuel cell system based on existing components
Bakalis, D. P.; Stamatis, A. G. (2011)The objective of this work is the development of a simulation model for a hybrid Solid Oxide Fuel Cell (SOFC)/Micro Gas Turbine (MGT) system, flexible and robust enough, capable to predict the system performance under ...