Results 181 to 190 of about 9,079 (232)

Analysis of exergy destruction in data centres

13th InterSociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems, 2012
IT 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, Nagarathinam Srinarayana, Masud Behnia, Steve W. Armfield   +3 more
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Integrated Study of a Minimum Exergy Destruction Building Conditioning System

Volume 6A: Energy, 2013
The 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, SCIUBBA, Enrico, TORO, CLAUDIA   +2 more
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On the exergy balance equation and the exergy destruction

Energy, 2016
Abstract The exergy balance equation can be written expressing the useful work for a general process as depending on the useful work for the corresponding reversible process and the exergy destruction term. However, this can be made only if the terms (other than the exergy destruction term) on the exergy balance equation for the general process lead ...
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Endogenous and Exogenous Exergy Destruction in Thermal Systems

Advanced Energy Systems, 2006
One 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, Solange O. Kelly, Tatiana V. Morosuk   +2 more
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Description of aquatic ecosystem's development by eco-exergy and exergy destruction

Ecological Modelling, 2007
Abstract 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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Exploring avoidable carbon emissions by reducing exergy destruction based on advanced exergy analysis: A case study

Energy, 2020
Abstract The energy efficiency improvement and practicable carbon emission reduction of coal chemical industry as well as other industrial systems are major concerns associated with designing feasible carbon emission reduction scheme. Based on advanced exergy analysis, this study establishes quantitative analysis between exergy destruction and direct
Junnian Wu, Na Wang
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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, 2007
In 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.
Y-F Su, C-K Chen
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Exergy Destruction Study on Small DI Diesel Engine

2017
In 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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First and second level of exergy destruction splitting in advanced exergy analysis for an existing boiler

Energy Conversion and Management, 2015
Abstract When complex energy systems are analyzed and when a large number of their components is observed, the destruction of exergy related to a single component is dependent on its own properties, but also on the characteristics of other components.
Goran D. Vučković, Mirko M. Stojiljković, Mića V. Vukić   +2 more
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Mini two-shaft gas turbine exergy analysis with a proposal to decrease exergy destruction

2018
In 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, Haratian, Mojtaba, Teymouri, MohammadSaleh   +2 more
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