Results 11 to 20 of about 5,391 (179)

A Systematic Approach to Exergy Efficiency of Steady-Flow Systems [PDF]

open access: yesEntropy
Exergy efficiency is a measure of thermodynamic perfection. A device that operates reversibly has an exergy efficiency of 100 percent and is said to be thermodynamically perfect.
Yunus A. Çengel, Mehmet Kanoğlu
doaj   +2 more sources

Studies of the unavoidable exergy loss rate and analysis of influence parameters for pipeline transportation process

open access: yesCase Studies in Thermal Engineering, 2018
According to the exergy balance relationship among the various items in the crude oil transportation process system, the exergy balance equation is established and each exergy loss is calculated.
Qinglin Cheng   +6 more
doaj   +1 more source

Energy and Exergy Analyses of Adsorption Chiller at Various Recooling-Water and Dead-State Temperatures

open access: yesEnergies, 2021
We conducted energy and exergy analyses of an adsorption chiller to investigate the effect of recooling-water temperatures on the cooling capacity and Coefficient of Performance (COP) with variable cycle modes.
Ahmad A. Alsarayreh   +3 more
doaj   +1 more source

Energy and Exergy Analysis of Internal Combustion Engine Performance of Spark Ignition for Gasoline, Methane, and Hydrogen Fuels [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2021
Exergy analysis is a tool to determine the share of processes involved in transferring input functionality to the system and where the useful energy loss occurs in a system or process. In this study, an exergy comparison of the performance of an internal
Nima Norouzi   +4 more
doaj   +1 more source

Analysis and Optimization of Exergy Flows inside a Transcritical CO2 Ejector for Refrigeration, Air Conditioning and Heat Pump Cycles

open access: yesEnergies, 2019
In this study, the exergy analysis of a CO2 (R744) two-phase ejector was performed using a 1D model for both single and double choking conditions. The impact of the back pressure on the exergy destruction and exergy efficiencies was presented to evaluate
Sahar Taslimi Taleghani   +2 more
doaj   +1 more source

Projection of sustainability indicators, emissions and improvement potential of the energy drivers in the Nigerian transport sector based on exergy procedure

open access: yesScientific African, 2022
The exergetic sustainability, emissions pattern and improvement potential of the Nigerian transport sector (NTPS) is presented. The historical and projected energy consumption from 1988 to 2019 and 2020–2040 were considered.
F.I. Abam   +6 more
doaj   +1 more source

Studies on energy consumption of crude oil pipeline transportation process based on the unavoidable exergy loss rate

open access: yesCase Studies in Thermal Engineering, 2018
In order to ensure the crude oil pipeline process smoothly, the driving force has a certain exergy loss. Based on the exergy analysis method, according to the required minimum potential difference of pipeline transportation, the unavoidable exergy loss ...
Qinglin Cheng   +5 more
doaj   +1 more source

Thermodynamic Performance and Exergy Analysis of a Four-Cylinder Gasoline Engine Fueled with Gasoline-Alcohol Blends: The Role of Pentanol, Butanol, Ethanol, and Propanol [PDF]

open access: yesJournal of Chemical and Petroleum Engineering
This study examines the combustion behavior and exergy performance of a water-cooled, four-cylinder gasoline engine operating on pure gasoline and various gasoline–bio-alcohol blends, including those containing ethanol, butanol, propanol, and pentanol ...
Donya Khoshkname   +2 more
doaj   +1 more source

Thermodynamic analysis of combined cycle plant operation as part of an energy-saving system based on an absorption bromide-lithium refrigerating machine [PDF]

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", 2020
The main directions of research of the current energy-generating system, taking into account its technical limitations, are optimization and forecasting based on the analysis of its operating modes.
L. V. Galimova, D. Z. Bairamov
doaj   +1 more source

Exergy study of amine regeneration unit for diethanolamine used in refining gas sweetening: A real start-up plant

open access: yesAlexandria Engineering Journal, 2022
Diethanolamine (DEA) solutions are used in refineries to sweeten gas. DEA is responsible for absorbing H2S from sour gas. In an Amine Regeneration Unit (ARU), the rich amine with H2S is regenerated. A refining column in the Middle East started commercial
Ahmed Y. Ibrahim   +3 more
doaj   +1 more source

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