Results 191 to 200 of about 9,079 (232)

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
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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
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Exergy destruction minimization: A principle to convective heat transfer enhancement

International Journal of Heat and Mass Transfer, 2018
Abstract Enhancing convective heat transfer, by strengthening fluid disturbance, is an effective way of raising the utilization efficiency of an energy system. In this study, in order to introduce a principle for convective heat transfer enhancement, a physical quantity called available potential was defined, and an equation of available potential ...
W. Liu, P. Liu, J.B. Wang, N.B. Zheng, Z.C. Liu   +4 more
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A conceptual view of exergy destruction in mergers and acquisitions

Technological Forecasting and Social Change, 2019
Abstract Company mergers are complex where several firm-specific and contextual factors interact with each other impacting the outcome of the process. Although many firms merge with or acquire others to increase the value of their firms, have more market power and gain more ability to negotiate with suppliers or customers, most of mergers and ...
Gökçen Arkalı Olcay, M. Atilla Öner, Ali Bahadır Olcay   +2 more
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Environmental Impact Index Using Exergy Destruction Within an Ecosystem: Methodology

Volume 6: Emerging Technologies: Alternative Energy Systems; Energy Systems: Analysis, Thermodynamics and Sustainability, 2009
Theoretical bases of the use of the irreversibilities concept in an ecosystem as an environment impact index are presented in this paper. Because an ecosystem is composed by different biotics and abiotics parts, each part has a specific function in the processes to transport energy inside the ecosystem, all these processes having a large dependence ...
Sosimo E. Diaz-Mendez, Abel Hernandez-Guerrero, Jose M. Rodriguez-Lelis, Cuauhte´moc Rubio-Arana   +3 more
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Unsteady exergy destruction of the neuron under dynamic stress conditions

Energy, 2013
Abstract Just like all physical systems, biological systems also obey laws of thermodynamics, and as such the useful work potential of a biological system is its exergy. In some studies, exergy of living systems is considered with respect to work performance of humans in offices or buildings; however the exergy analysis of biochemical reactions in a ...
S. Genc, E. Sorguven, M. Ozilgen, I. Aksan Kurnaz   +3 more
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Numerical analysis of flow exergy destruction in parallel plate microchannels

2019
20th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2007 -- 25 June 2007 through 28 June 2007 ...
Erbay, Berrin L., Ercan, M. S., Öztürk, M. Mete   +2 more
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Sensitivity analysis of exergy destruction in a real combined cycle power plant based on advanced exergy method

Energy Conversion and Management, 2015
Abstract The advanced exergy analysis extends engineering knowledge beyond the respective conventional methods by improving the design and operation of energy conversion systems. In advanced exergy analysis, the exergy destruction is splitting into endogenous/exogenous and avoidable/unavoidable parts.
Fateme Ahmadi Boyaghchi, Hanieh Molaie
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Optimal control strategy for minimization of exergy destruction in boiler superheater

Energy Conversion and Management, 2013
Abstract Steam temperatures in large capacity boilers of modern electric power stations are maintained closely around the design specification by spraying water in the superheater (SH) attemperator to ensure safe and efficient operation and long plant life.
Tapan K. Ray, Ranjan Ganguly, Amitava Gupta   +2 more
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Study on refrigerant circuitry of condenser coils with exergy destruction analysis

Applied Thermal Engineering, 2000
Abstract A numerical model of air-cooled condenser coils is proposed to investigate the coil performance. In this model, the properties of refrigerant and air, as well as six exergy destruction components associated with different sources of irreversibility are computed locally along the coil based on numerous control volumes. The governing equations
S.Y. Liang, T.N. Wong, G.K. Nathan
openaire   +1 more source