Results 191 to 200 of about 3,894 (216)

Exergy destruction minimisation of a regenerative Brayton cycle

2018
In this paper, a Brayton cycle with regenerator in which an air is preheated by the exhaust gases leaving the turbine is analysed. In the model, by utilizing the air-standard assumptions, the combustion process is replaced by a constant-pressure heat-addition process in the heat exchanger where the air is heated by the stream of constant temperature ...
Galović, Antun, Odeljan, Martina, Barac, Antun, Holik, Mario   +3 more
openaire   +1 more source

Advanced Exergy Analysis of a Turbofan Engine (TFE): Splitting Exergy Destruction into Unavoidable/Avoidable and Endogenous/Exogenous

International Journal of Turbo & Jet-Engines, 2017
AbstractA conventional and advanced exergy analysis of a turbofan engine is presented in this paper. In this framework, the main exergy parameters of the engine components are introduced while the exergy destruction rates within the engine components are split into endogenous/exogenous and avoidable/unavoidable parts. Also, the mutual interdependencies
openaire   +1 more source

Exergy destruction investigation of complex gas turbine components

i-manager’s Journal on Future Engineering and Technology
In Libya, simple gas turbine power plants are widely used for electrical power generation. However, this study examines complex configurations of the Brayton cycle, including the simple Brayton cycle, with intercooling, regeneration, and reheating, focusing on physical exergy destruction and its impact on specific fuel consumption and net power.
El-Sagier Faraj, A G Abdulrahem Abdulgader   +1 more
openaire   +1 more source

Entropy production and exergy destruction: Part II—illustrative technologies

International Journal of Hydrogen Energy, 2003
Abstract In a previous companion article, we pointed out that inter-technology synergies will become a generic feature of coming hydrogen age systems. These synergies will develop between sources, currencies and technologies. Unfortunately, today's optimization methodologies, based on energy rather than exergy optics, are often a misleading basis for
openaire   +1 more source

Exergy Destruction in Atrial Fibrillation; a New Exergy Age Index

2023
Amin Deyranlou, Alistair Revell, Amir Keshmiri   +2 more
openaire   +1 more source

Evaluation of the local exergy destruction in the intake and fan of a turbofan engine

Energy, 2013
Modern air crafts and aviation industry are dominant consumers of fuel. The application of exergy analysis is powerful tool in the design and performance judgment of these systems. In this study, the local entropy generated and exergy destroyed in the intake and fan of a turbofan engine are investigated.
openaire   +1 more source

Correlations of exergy destruction during combustion for internal combustion engines

International Journal of Exergy, 2015
The greatest destruction of exergy for internal combustion engines is a result of the combustion process. The fundamental sub–processes which contribute to the combustion irreversibility include mixing, heat transfer and chemical reactions. This work used an engine cycle simulation to provide quantitative connections between the exergy destruction, and
openaire   +1 more source

Energy Systems Improvement based on Endogenous and Exogenous Exergy Destruction

2008
Die exergoökonomische Analyse liefert Planern und Ingenieuren Informationen, auf deren Grundlage Anlagendesign und Betrieb von Energieumwandlungsanlagen optimiert werden können. Sie setzt ökonomische Prinzipien und das Exergiekonzept ein und berücksichtigt damit in besonderer Weise den ökonomischen Wert der Exergievernichtung (d.h.
openaire   +1 more source

A novel combined power and cooling cycle design and a modified conditional exergy destruction approach

Energy Conversion and Management, 2021
Adityabir Singh, Ranjan Das
exaly  

Energy efficiency and exergy destruction of supersonic steam ejector based on nonequilibrium condensation model

Applied Thermal Engineering, 2021
Hongbing Ding, Chuang Wen, Chao Wang
exaly