Results 31 to 40 of about 3,406,342 (222)

An exergy approach to efficiency evaluation of desalination [PDF]

open access: yesApplied Physics Letters, 2017
This paper presents an evaluation process efficiency based on the consumption of primary energy for all types of practical desalination methods available hitherto. The conventional performance ratio has, thus far, been defined with respect to the consumption of derived energy, such as the electricity or steam, which are susceptible to the conversion ...
Kim Choon Ng   +3 more
openaire   +2 more sources

Energy efficiency of cement finish grinding in a dry batch ball mill [PDF]

open access: yes, 2006
Dry grinding experiments on cement clinker were carried out using a laboratory batch ball mill equipped with torque measurement. The specific energy was found to be dependent on operating parameters and clinker environment.
Frances, Christine   +2 more
core   +1 more source

Do the Different Exergy Accounting Methodologies Provide Consistent or Contradictory Results? A Case Study with the Portuguese Agricultural, Forestry and Fisheries Sector

open access: yesEnergies, 2017
Three exergy accounting approaches are used to evaluate exergy efficiency: the Energy Resources Exergy Accounting (EREA), the Natural Resources’ Exergy Accounting (NREA) and the Extended Exergy Accounting (EEA).
Ricardo Manso   +2 more
doaj   +1 more source

Energy, exergy and environment analyses of a hybrid PV-system district heating system for a new household settlement in Germany

open access: yes, 2022
267292This work presents an exergetic and environmental assessment of a hybrid district heating system (HDHS) and normal district heating system (NDHS) analysed within two supply temperature levels. Energetic, exergetic and environmental performances are
Bouaziz, N.   +4 more
core   +1 more source

Exergy Analysis of a Desiccant Cooling Cycle Recovering Heat from Hot Exhaust [PDF]

open access: yes, 2012
The manufacturing processes of industrial gases are major consumers of energy as electricity or fossil fuel. A big part of this energy ends up as heat in the process gas at temperatures around 150°C.
Zoughaib, Assaad   +5 more
core   +1 more source

Measuring and decomposing changes in agricultural productivity, nitrogen use efficiency and cumulative exergy efficiency: Application to OECD agriculture

open access: yes, 2011
This paper uses an aggregate quantity space to decompose the temporal changes in nitrogen use efficiency and cumulative exergy use efficiency into changes of Moorsteen–Bjurek (MB) Total Factor Productivity (TFP) changes and changes in the aggregate ...
Viet-Ngu Hoang, Hoang, Viet-Ngu
core   +1 more source

Thermoeconomic Diagnosis of anUrban District Heating System based onCogenerative Steam and Gas Turbines [PDF]

open access: yes, 2001
The energy system diagnosis is a experimental technique applied for the detection and the location of possible anomalies. These information are obtained by comparing the values assumed by opportune variables in a operation condition with the ...
Verda, Vittorio
core   +1 more source

The Estimation of Exergy Efficiency and Exergy Losses in Air Conditioning Systems of Operating Cleanrooms by a Grassmann Diagram

open access: yes, 2015
An important place in the up-to-date technologies related to energy transformation is occupied by the processes and equipment for which the objective value of energy perfection can be defined only on the basis of the thermodynamic analysis.
Volodymyr Labay, Dmytro Harasym
core   +1 more source

An energy and exergy analysis of photovoltaic system in Bantul Regency, Indonesia

open access: yesJournal of Mechatronics, Electrical Power, and Vehicular Technology, 2018
Energy and exergy analysis has been conducted on photovoltaic (PV) system in Bantul Regency, a special region of Yogyakarta, Indonesia. The PV exergy analysis was used to determine the performance of the PV system by considering environmental factors ...
Arif Rahman Hakim   +2 more
doaj   +1 more source

Exergy Analysis of a Shell and Tube Energy Storage Unit with Different Inclination Angles

open access: yesEnergies, 2023
To optimize the utilization of solar energy in the latent heat thermal energy storage (LHTES) system, this study conducts exergy analysis on a paraffin-solar water shell and tube unit established in the literature to evaluate the effects of different ...
Li Peng   +3 more
doaj   +1 more source

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