Results 81 to 90 of about 2,721 (226)

Energy and exergy analysis and optimum working conditions of a renewable energy system using a transient systems simulation program

open access: yesEnergy Exploration & Exploitation, 2020
A solar tri-generation system comprises of photovoltaic thermal collectors that are used for the production of electrical power and domestic hot water simultaneously.
Nidal H Abu-Hamdeh, Khalid A Alnefaie
doaj   +1 more source

Synergistic Enhancement of Solar Thermal Energy Storage Using Al2O3 Nano‐PCM and TiO2 Nanocoated Absorber Surfaces

open access: yesEngineering Reports, Volume 8, Issue 7, July 2026.
Al2O3‐reinforced phase change material and TiO2 nanocoated absorbers enhanced solar heat absorption, thermal storage, and photothermal conversion efficiency. Optimized 1.5 wt.% Al2O3 improved thermal conductivity and energy retention, achieving 90.7°C outlet temperature and 79.5% thermal efficiency for advanced solar thermal energy storage applications.
Sathish Thanikodi   +6 more
wiley   +1 more source

Monthly Energy, Exergy, Environmental, and Economic Performance and Green Hydrogen Production Analysis of a Flat‐Plate Solar Collector‐Driven Organic Rankine Cycle System Under Variable Mass Flow and Irradiance

open access: yesChemistryOpen, Volume 15, Issue 7, July 2026.
The feasibility of using a hybrid flat‐plate solar collector–organic Rankine cycle–proton exchange membrane system for the generation of electricity, heat, and hydrogen simultaneously is analyzed. The energy efficiency of the solar thermal system reaches 23.82%, and hydrogen production of up to 13.62 kg/month is achieved while reducing CO2 emissions ...
Ayhan Atiz   +2 more
wiley   +1 more source

Finding a mix of renewable energy for different stakeholders by applying multi‐criteria decision‐making techniques

open access: yesInternational Transactions in Operational Research, Volume 33, Issue 4, Page 2499-2534, July 2026.
Abstract This paper presents a two‐stage model for planning a renewable energy portfolio by balancing economic, social and environmental sustainability goals. The first stage addresses a multi‐objective problem where conflictive impacts generated by the energy portfolios should be optimised according to the corresponding economic, social or ...
Amelia Bilbao‐Terol   +2 more
wiley   +1 more source

Second-law performance of heat exchangers for waste heat recovery

open access: yes, 2014
Exergy change rate in an ideal gas flow or an incompressible flow can be divided into a thermal exergy change rate and a mechanical exergy loss rate. The mechanical exergy loss rates in the two flows were generalized using a pressure-drop factor.
San, J.Y., 沈君洋
core   +1 more source

A Critical Appraisal of Pyrolysis Pretreatment in Lithium‐Ion Battery Recycling: From High‐Temperature Material Transformations to Environmental Impact

open access: yesChemSusChem, Volume 19, Issue 11, 15 June 2026.
Pyrolysis of different size fractions of waste lithium‐ion batteries reveals complex interaction among cathode materials, graphite, aluminum, and polymeric binders. Carbothermic and aluminothermic reduction pathways promote the formation of metallic species at moderate temperatures.
Mohazzam Saeed   +3 more
wiley   +1 more source

Exergy aided pinch analysis to enhance energy integration towards environmental sustainability in a chlorine-caustic soda production process

open access: yes, 2017
This paper presents a case study on the improvement of energy integration in a chlorine-caustic soda process based on the main sources of thermal exergy losses.
Ghannadzadeh, Ali   +4 more
core   +1 more source

Lessons Learned from Labyrinth Type of Air Preconditioning in Exergy-Aware Solar Greenhouses

open access: yes, 2022
An exergy-based model hypothesizes that labyrinth-type ground-to-air heat exchangers are responsible for carbon dioxide emissions if the exergy of power demand concerning ancillaries like fans and pumps exceeds the thermal exergy gain.
Kilkis, Birol
core   +2 more sources

Analysis of an Air Powered Engine System Using a Multi-Stage Radial Turbine

open access: yesEntropy, 2013
The performance and design criteria of air powered multistage turbines are studied thermodynamically in this paper. In-house code is developed in the C++ environment and the characteristics of four-stage turbines with inter-heating are analyzed in terms ...
Xinjing Zhang   +4 more
doaj   +1 more source

THE IMPROVEMENT OF THE HEAT-TECHNOLOGICAL DIAGRAMS OF PRODUCTION OF THE HIGH-VISCOUS POLYMER MATERIALS

open access: yes, 1996
The purpose of the work: the improvement of the heat-technological diagrams of production of the polymetacrylate, triacetatcellulose base of the cinephotomaterials, the dry film photoresistor to increase its efficiency; the development of the algorithm ...
Shaikhutdinov, Azat Albertovich
core  

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