Results 11 to 20 of about 32,285 (228)

Exergy-Based Efficiency Assessment of Fans vs. Isentropic Efficiency [PDF]

International Journal of Turbomachinery, Propulsion and Power, 2023
The efficiency definition allows us to compare two machines with each other. In general, the efficiency is defined as the ratio of usable power to the required power. This raises the question: what is the usable power? Most engineers discuss efficiency on the basis of the energy balance, i.e., the first law of thermodynamics.
Johannes Brötz, Christian Schänzle, Peter F. Pelz   +2 more
openaire   +2 more sources

Exergy Efficiency for Radiation Heat Transfer

IOP Conference Series: Materials Science and Engineering, 2020
Abstract One of the evaluation criteria for the performance of thermal processes is exergy analysis. Along with energy analysis, exergy calculations provide a clear and highly effective understanding of the performance of a system. Although exergy analysis has been extensively applied to many industrial processes, there are limited works
Mohammed, Hayder Noori, Mengüç, Mustafa Pınar   +1 more
openaire   +2 more sources

Exergy-Based Efficiency Analysis of Pyrometallurgical Processes [PDF]

Metallurgical and Materials Transactions B, 2010
Exergy-based efficiency analysis provides a powerful tool for optimizing industrial processes. In this article, the use of this technique for pyrometallurgical applications is explored in four steps. First, the exergy concept is introduced, the outline of exergy calculations is presented, and the role of a reference state is discussed.
Klaasen, Bart, Blanpain, Bart, Wollants, Patrick, Jones, Peter Tom, Durinck, Dirk, Dewulf, Jo   +5 more
openaire   +1 more source

Exergy analysis in ProSimPlus ® simulation software: A focus on exergy efficiency evaluation [PDF]

Computers & Chemical Engineering, 2015
On industrial sites, the promotion of best practices to enable an efficient utilization of energy has emerged as one of the major point of focus. Among the different approaches existing to improve industrial processes, the exergy analysis, although limited to the academic world, has been shown to be a powerful tool for improving energy efficiency of ...
Stéphane Gourmelon, Raphaële Thery-Hetreux, Pascal Floquet, Olivier Baudouin, Philippe Baudet, Louis Campagnolo   +5 more
openaire   +3 more sources

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

Energies, 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, Mikhail Sorin, Sébastien Poncet   +2 more
doaj   +1 more source

Steady state simulation and exergy analysis of supercritical coal-fired power plant with CO₂ capture [PDF]

, 2015
Integrating a power plant with CO₂ capture incurs serious efficiency and energy penalty due to use of energy for solvent regeneration in the capture process.
Kelsall, Greg, Olaleye, Akeem K., Wang, Meihong   +2 more
core   +2 more sources

Effect of Irreversibilities on the Performance of Thermoelectric Generator Investigated Using Exergy Analysis

Journal of Thermal Science and Technology, 2013
For a practical thermoelectric generator (TEG) system, the performance is affected by many irreversible processes. This study evaluates the effects of multi-irreversibilities on TEG performance using exergy analysis.
Chien-Chang WANG, Chen-I HUNG
doaj   +1 more source

Analysis of the Exergy of Combustion the Diesel and Biodiesel Fuel in a DI Diesel Engine [PDF]

Journal of Agricultural Machinery, 2019
Introduction In recent years, the exergy analysis method has been widely used in the design, simulation and performance assessment of various thermal systems.
G Khoobbakht
doaj   +1 more source

General methodology for exergy balance in ProSimPlus® process simulator [PDF]

, 2012
This paper presents a general methodology for exergy balance in chemical and thermal processes integrated in ProSimPlus® as a well-adopted process simulator for energy efficiency analysis.
Baudet, Philippe, Baudouin, Olivier, Floquet, Pascal, Ghannadzadeh, Ali, Joulia, Xavier, Théry Hétreux, Raphaële   +5 more
core   +2 more sources

Electrotechnological Heat Treatment of Milk: Energy and Exergy Efficiency

Техника и технология пищевых производств, 2023
The dairy industry needs new and more energy-efficient technological procedure for milk pasteurization. This article introduces a comparative efficiency assessment of various milk pasteurization technologies and electrotechnological means.
Andrei A. Bagaev, Sergey O. Bobrovskiy
doaj   +1 more source