Results 141 to 150 of about 1,409 (180)
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Exergy efficiency of a solar photovoltaic array based on exergy destructions
Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 2010In this article, an attempt has been made to investigate the exergetic performance of a solar photovoltaic (PV) array. A detailed energy and exergy analysis has been carried out to calculate the operating and electrical parameters, exergy destruction components, and exergy efficiency of a typical PV array.
F Sarhaddi +3 more
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Analysis of exergy destruction in data centres
13th InterSociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems, 2012IT equipment and systems, housed in data centres, consume a considerable amount of electricity. Most of the electrical energy consumed by the data centre IT equipment is released in the form of heat. From a second law of thermodynamics analysis point of view, the mixing of hot and cold air streams in the room caused by hot air recirculation is an ...
Babak Fakhim +3 more
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Integrated Study of a Minimum Exergy Destruction Building Conditioning System
Volume 6A: Energy, 2013The relatively low average conversion efficiency of air-conditioning systems and the recently imposed upper bounds to the final energy use in the heating and cooling of residential buildings suggest to consider new approaches to design less energy intensive systems.
Fabrizio Ferraro +2 more
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Endogenous and Exogenous Exergy Destruction in Thermal Systems
Advanced Energy Systems, 2006One of the roles of exergy analysis is to provide thermal system designers and operators with information useful for the system optimization. An exergy analysis identifies the sources of thermodynamic inefficiencies by evaluating the exergy destruction within each system component.
George Tsatsaronis +2 more
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A conceptual view of exergy destruction in mergers and acquisitions
Technological Forecasting and Social Change, 2019Abstract 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 +2 more
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Description of aquatic ecosystem's development by eco-exergy and exergy destruction
Ecological Modelling, 2007Abstract The respiration rate (energy used for maintenance as g detritus equivalents/m2 y, and the stored eco-exergy as g detritus equivalents/m2 have been found for 26 different aquatic ecosystems. It was shown that the respiration rate has a maximum value for a given type of aquatic ecosystem: 30 g detritus equivalents/m2 y for coral reef, about 12
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Exergy destruction minimization of an irreversible Carnot refrigeration cycle
Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 2007In this paper, exergy destruction minimization has been carried out for an irreversible Carnot refrigeration cycle. The rates of destroyed exergy in various portion of this physical model are derived. The goal of exergy destruction minimization is to minimize the rate of total destroyed exergy of the system. By defining the recovery factor during power
Y-F Su, C-K Chen
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Mini two-shaft gas turbine exergy analysis with a proposal to decrease exergy destruction
2018In this case study, exergy analysis is applied to a mini two-shaft gas turbine which is located in Islamic Azad University Khomeini Shahr Branch`s Thermodynamics laboratory and a proposal presented to make exergy destruction less using a Heat Recovery Water Heater (HRWH).
Babadi Soultanzadeh, Milad +2 more
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Study on refrigerant circuitry of condenser coils with exergy destruction analysis
Applied Thermal Engineering, 2000Abstract 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
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Exergy Destruction Study on Small DI Diesel Engine
2017In this study, energy and exergy analyses have been carried out using the experimental data for a small naturally aspirated, direct injection, single cylinder, 4 stroke diesel engine. The exergy and performance parameters were computed from the measured data. It has been found that significant exergy destruction occurs at low loads.
Veena Chaudhary, R. P. Gakkhar
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