Results 41 to 50 of about 3,370 (214)

Energy and exergy analysis of a flat plate collector using collector test equations [PDF]

open access: yesE3S Web of Conferences, 2020
This paper presents the energetic and exergetic analysis of a widely used flat plate collector based on the collector testing equations. The evaluation of the performances of the collector is done under the climatic conditions corresponding to a typical ...
Gheorghian Adina-Teodora   +2 more
doaj   +1 more source

Exergy‐Based Simulation and Optimization of Multiagent MSW Gasification for Sustainable Energy Recovery Using Aspen Plus

open access: yesEnergy Science &Engineering, EarlyView.
ABSTRACT Thermochemical gasification is one of the most efficient methods for producing solid waste synthesis gas. Therefore, to predict and analyze the process of gasification of municipal solid waste (MSW) in a downdraft fixed‐bed gasification reactor with a thermal capacity of 2.1 kW, a comprehensive numerical modeling approach based on Gibbs free ...
Mohammad Reza Gharib   +2 more
wiley   +1 more source

Selecting Between Hydrogen and Methanol for Fuel Cell‐Organic Rankine Cycle Hybrid Power Systems: A Comparative 4E Analysis

open access: yesEnergy Science &Engineering, EarlyView.
A 4E comparison of PEMFC‐ORC and DMFC‐ORC systems shows that PEMFC‐ORC achieves 21% higher energy efficiency, while DMFC‐ORC obtains 31% higher exergy efficiency and 57% lower levelized cost of electricity. However, DMFC‐ORC emits nearly twice the annual carbon dioxide equivalent of PEMFC‐ORC.
Zahra Piryaei   +2 more
wiley   +1 more source

Comparative Experimental Efficiency of Solar Water Heating Systems With Enhanced Thermal Performance: A Review

open access: yesEnergy Science &Engineering, Volume 14, Issue 6, Page 3056-3072, June 2026.
This review presents a comparative analysis of experimental studies aimed at improving the thermal efficiency of solar water heating (SWH) systems. Various enhancement techniques, including nanofluids, phase change materials, optimized collector designs, and hybrid photovoltaic–thermal systems, are evaluated based on their impact on system performance ...
Oluwaseyi O. Alabi   +2 more
wiley   +1 more source

Exergetic sustainability evaluation of irreversible Carnot refrigerator

open access: yes, 2015
Purpose of this paper is to assess irreversible refrigeration cycle by using exergetic sustainability index. In literature, there is no application of exergetic sustainability index for the refrigerators and, indeed, this index has not been derived for ...
Açıkkalp, Emin
core   +1 more source

Techno‐Economic Analysis of Hydrocarbon‐CO2 Binary Mixtures in Heat Pump‐Based Thermal Energy Storages

open access: yesEnergy Technology, Volume 14, Issue 4, April 2026.
Heat‐pump charging of Carnot batteries with zeotropic large temperature glide CO2–alkane mixtures enables charging from ambient to ≈398.15 K with improved heat‐exchanger temperature matching at moderate pressure ratios. The highest COP occurs near xCO2 ≈ 0.15, whereas cost and throttling losses rise monotonically with CO2 content; butane isomers ...
Majid Zarif Sabbaghnia, Burak Atakan
wiley   +1 more source

Influence of Transformation Coefficient of Refrigerating Machine on Exergetic Efficiency of Air Conditioning System of Operating Clean Rooms

open access: yesEnergy Engineering and Control Systems, 2023
Exergetic method is a universal way of thermodynamic research of various processes of energy transformation in energy technological systems, to which air conditioning system for clean room belongs.
Volodymyr Labay, Kyrylo Andreiko
doaj   +1 more source

EXERGETIC EFFICIENCY INDICATORS OF HEAT TECHNOLOGY INSTALLATIONS FOR HEAT TREATMENT OF CONCRETE PRODUCTS [PDF]

open access: yes, 2021
Рассмотрены актуальные вопросы выполнения эксергетического анализа процессов тепловой обработки бетонных и железобетонных изделий и теплотехнологических установок для их осуществления.
Романюк, В. Н.   +3 more
core  

Thermodynamic and Technoeconomic Assessment of a Multigeneration Renewable Energy System for Energy Independence in Gn. Fuvahmulah and L. Gan of Maldives

open access: yesInternational Journal of Energy Research, Volume 2026, Issue 1, 2026.
The lack of natural energy resources, coupled with the Maldives’ complete dependance on imported electricity, makes sustainable power solutions imperative. This study examines the design and performance of a renewable energy (RE) system for Gn. Fuvahmulah and L. Gan.
Saad Karim   +5 more
wiley   +1 more source

Exergetic efficiency and exergy-based ecological function performance optimizations for two irreversible simple Brayton refrigeration cycle models

open access: yesResults in Engineering
Air (Brayton) refrigerator has some application potentials nowadays. Based on two irreversible models of constant- and variable-temperature heat reservoir simple Brayton refrigerators established in previous references, this paper further derives ...
Lingen Chen   +4 more
doaj   +1 more source

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