Results 171 to 180 of about 32,285 (228)

Performance evaluation of a triple-sided solar dryer in terms of energy-exergy analysis, sustainable indicators and CFD simulation during drying tilapia fish strips. [PDF]

open access: yesSci Rep
Ghanem THM   +10 more
europepmc   +1 more source

Optimized nanofluid coolants enhance thermal performance in ruffled fin automotive radiators. [PDF]

open access: yesSci Rep
Oshionebo FD   +6 more
europepmc   +1 more source

Primary exergy efficiency—Effect of system efficiency environment to benefits of exergy savings

Energy and Buildings, 2016
Abstract Improving energetic performance is a key factor in making societies more sustainable. One way to analyze energetic performance is to use methods based on the second law of thermodynamics. Exergy analysis is such a method. With exergy analysis thermodynamic losses of the studied system can be found.
Kohl, Thomas   +4 more
openaire   +5 more sources

Efficiencies of exergy transductions

Applied Energy, 1980
Abstract Exergy is conserved in thermodynamically reversible heat engines and heat pumps. Using a reversible heat engine to stimulate a reversible heat pump, available power and exergy may be exchanged, the total amount of exergy being conserved. For such a combined system, either more heat may be released at a lower temperature or energy may be ...
Mohey Hussein   +3 more
openaire   +1 more source

Energy and Exergy Efficiencies

2012
Energy and exergy efficiencies are considered to be useful for the assessment of energy conversion systems and for improved performance. By considering both of these efficiencies, the quality and quantity of the energy used to achieve a given objective is properly accounted for, and the degree to which efficient and effective use of energy resources is
Mehmet Kanoğlu   +2 more
openaire   +1 more source

Exergy efficiency and conversion of chemical reactions

Energy Conversion and Management, 1998
An exergy analysis of the ammonia oxidation in nitrous oxide has been performed using alternatively the conventional second law efficiency and the more recently proposed intrinsic exergy efficiency. It is shown that the second law efficiency does not account for the conversion effect on the overall performance of a chemical system while the intrinsic ...
M. Sorin, J.-C. Bonhivers, J. Paris
openaire   +2 more sources

Comparing hydraulic and polytropic efficiencies with exergy efficiency

Exergy, An International Journal, 2001
Abstract This paper uses the hydraulic and polytropic efficiency concepts in a domain wider than that of their original definition. A generalized Bernoulli equation taken from previous papers is also considered. The aim is to find a general statement yielding hydraulic efficiency values ranging from one to zero, and a relative dissipative term ...
Giacomo Bisio, Giuseppe Rubatto
openaire   +1 more source

Energy efficiency, no: It's exergy efficiency!

International Journal of Hydrogen Energy, 2007
Elevated energy efficiencies seem politically beyond dispute as measures against anthropogenic climate change. Energy efficiencies, however elevated they become, remain within the applied energy system, though. The paper draws attention to the exergo-thermodynamical system change of splitting up energy into exergy and anergy where exergy is the maximum
openaire   +1 more source

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