Results 81 to 90 of about 32,285 (228)

Techno‐Economic and Life Cycle Assessment of a Nanofluid‐Based Concentrated PV/T–TEG Hybrid System With Spectral Filtering

open access: yesEnergy Science &Engineering, EarlyView.
A novel cascade nanofluid‐based PV/T–TEG hybrid system (CS4) achieves 81.1% thermal and 18.75% exergy efficiency while cutting CO₂ emissions by 7.8 tons year⁻¹. The system delivers superior energy performance, economic savings, and environmental benefits, offering a sustainable pathway for next‐generation solar energy applications.
Abdelhak Lekbir   +4 more
wiley   +1 more source

Exergy-Based Sustainability Assessment of Gold Mining in Colombia: A Comparative Analysis of Open-Pit and Alluvial Mining

open access: yesEnergies
Thermodynamic methods such as exergy analysis enable the evaluation of environmental load (environmental impacts) by quantifying entropy generation and exergy destruction associated with using renewable and non-renewable resources throughout a production
Natalia A. Cano-Londoño   +3 more
doaj   +1 more source

Investigation of an Offset Finned Solar Air Heater Based on Energy and Exergy Performance [PDF]

open access: yesIranica Journal of Energy and Environment, 2016
This paper represented theoretically investigation of energy and exergy performance of an offset finned solar air heater. Parametric study was done to investigate the effect of variation of offset fin parameters i.e.
S. Rai, P. Chand, S. P. Sharma
doaj   +1 more source

Exergy Efficiency Optimization for Gas Turbine Based Cogeneration Systems [PDF]

open access: yesVolume 6A: Energy, 2013
Energy degradation can be calculated by the quantification of entropy and loss of work and is a common approach in power plant performance analysis. Information about the location, amount and sources of system deficiencies are determined by the exergy analysis, which quantifies the exergy destruction.
Ferreira, Ana C. M.   +4 more
openaire   +2 more sources

Integrated Flue‐Gas Heat Recovery for Optimized Steam and Power Generation Using Organic Rankine Cycle (ORC): A Technical and Economic Assessment

open access: yesEnergy Science &Engineering, EarlyView.
Integration of a steam cycle with an existing gas turbine increased efficiency from 32% to 51%, reducing fuel consumption by 21.4% and CO2 emissions by 18.6%. The modification generated USD 13.9 million annual savings and lowered the Levelized Cost of Energy to 38.7 USD/MWh, with a 3‐year payback.
Vahid Pirouzfar   +2 more
wiley   +1 more source

Nanomaterials and Eco‐Friendly Refrigerants in Vapor Compression System: A Review of Performance and Sustainability

open access: yesEnergy Science &Engineering, EarlyView.
This review highlights how nano oils and eco‐friendly nano refrigerants enhance energy‐efficient refrigeration by improving thermal conductivity, lubrication, and system performance. The integration of rheological and tribological testing confirms reduced compressor work, better heat transfer, and higher COP using sustainable, low‐GWP refrigerants for ...
Mohammed Dilawar   +7 more
wiley   +1 more source

Feasibility study of using industrial wind turbine in Manjil city by energy, exergy, economic and exergy destruction analysis

open access: yesJournal of Applied Science and Engineering
The importance of producing clean energy without any pollutants, including carbon dioxide and nitrogen oxides, has increased due to climate changes caused by global warming. Wind turbine can produce clean energy. To use a wind turbine, the feasibility of
Xiaoyuan An, Qi Zhao, Xiaoli Li
doaj   +1 more source

The Energy and Exergy of Light with Application to Societal Exergy Analysis

open access: yesEnergies, 2020
Lighting provides an indispensable energy service, illumination. The field of societal exergy analysis considers light (and many other energy products) to be enablers of economic growth, and lighting contributes a non-negligible proportion of total ...
Matthew Kuperus Heun   +3 more
doaj   +1 more source

Hevea brasiliensis seeds: A novel sustainable feedstock for ethanol production

open access: yesVietnam Journal of Chemistry, EarlyView.
Abstract The rubber tree (Hevea brasiliensis) is cultivated on a large scale mainly for the extraction of latex in Brazil and Southeast Asia, also generating large quantities of seeds. These seeds currently do not have large‐scale applications and may thus be considered as a residue.
Giovano Tochetto   +4 more
wiley   +1 more source

Exergy analysis of a four pan jaggery making process

open access: yesEnergy Reports, 2018
Jaggery is a non-traditional sweetener that is produced from boiling sugarcane juice. Due to the energy intensive nature of the combustion process in jaggery making, previous studies in literature have presented various process and equipment ...
Sanober Khattak   +3 more
doaj   +1 more source

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