Results 21 to 30 of about 4,653,935 (318)

Exergy Analysis of Thermal Power Plant for Three Different Loads

open access: yesTehnički Glasnik, 2023
This paper presents the energy and exergy analysis of thermal power plant Tuzla in Tuzla, Bosnia and Herzegovina. The main aim of this paper is to analyze the components of a 200 MW steam power plant unit in order to identify and quantify the sites with ...
Nurdin Ćehajić
doaj   +1 more source

Exergy efficiency of plant photosynthesis [PDF]

open access: yesChemical Engineering Science, 2015
Abstract With recent concerns about sustainability and environmental protection, growing attention has been focused on biological sources for both chemicals and fuels; however, to analyze such bioprocesses for commercial viability, and to investigate possible efficiency improvements, the theoretical efficiencies must be known as an upper-bound on ...
Cory S. Silva   +2 more
openaire   +1 more source

Retracted: Can the chemical industry solve the climate change?On the role of human energy production, renewable energies, and the potential of chemistry as a solution provider

open access: yesChemie Ingenieur Technik, EarlyView., 2023
Let us consider an alternative perspective on climate change: The sum of solar radiation and heat generated by human activity result in a net energy input of 1.96 times that of the Sun on the Earth's surface. The expanding global population is expected to exacerbate this issue. Potential solutions are proposed, including replacement and heat recycling.
Martin Bertau, Gerald Steiner
wiley   +1 more source

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

open access: yesInternational 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   +2 more
openaire   +2 more sources

Exergy Efficiency for Radiation Heat Transfer

open access: yesIOP 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   +1 more
openaire   +2 more sources

Exergy-Based Efficiency Analysis of Pyrometallurgical Processes [PDF]

open access: yesMetallurgical 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   +5 more
openaire   +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

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

open access: yes, 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   +2 more
core   +1 more source

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

open access: yesJournal 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]

open access: yesJournal 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

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