Results 1 to 10 of about 2,559 (165)

An overview on energy and exergy analysis of solar thermal collectors with passive performance enhancers

open access: yesAlexandria Engineering Journal, 2022
The evaluations of Energy and Exergy are very useful for enhancing the performance and diminishing irreversibility of the solar thermal collectors respectively.
M. Murugan   +8 more
doaj   +3 more sources

Performance Evaluation Concept for Ocean Thermal Energy Conversion toward Standardization and Intelligent Design

open access: yesEnergies, 2021
Ocean thermal energy conversion (OTEC) uses a very simple process to convert the thermal energy stored mainly in tropical oceans into electricity. In designs, operations, and evaluations, we need to consider the unique characteristics of OTEC to achieve ...
Takeshi Yasunaga   +2 more
doaj   +1 more source

Chemical and Mechanical Aspect of Entropy-Exergy Relationship

open access: yesEntropy, 2021
The present research focuses the chemical aspect of entropy and exergy properties. This research represents the complement of a previous treatise already published and constitutes a set of concepts and definitions relating to the entropy–exergy ...
Pierfrancesco Palazzo
doaj   +1 more source

Multi-Objective Optimization of Graded Thermal Storage System for Direct Steam Generation with Dish Concentrators

open access: yesEnergies, 2023
A single sensible thermal storage system has the disadvantage of poor system efficiency, and a sensible-latent graded thermal storage system can effectively solve this problem.
Zhengyue Zhu   +4 more
doaj   +1 more source

Energy Analysis and Exergy Optimization of Photovoltaic-Thermal Collector

open access: yesEnergies, 2020
A photovoltaic-thermal (PVT) collector is a solar-based micro-cogeneration system which generates simultaneously heat and power for buildings. The novelty of this paper is to conduct energy and exergy analysis on PVT collector performance under two ...
Sonja Kallio, Monica Siroux
doaj   +1 more source

Effects of Dynamic Shading on Thermal Exergy and Exergy Efficiency of a Photovoltaic Array

open access: yesTehnički vjesnik, 2022
In this study, the effects of dynamic shading caused by an incorrectly positioned transformer building in a Photovoltaic array were investigated regarding the exergy efficiency and thermal exergy for a year. Experimental and theoretical results show that the thermal exergy is affected by the surface temperature of solar panels depending on their ...
Pour Rahmati Khalejan, Seyed Hamed   +1 more
openaire   +3 more sources

Monthly Performance of a Photovoltaic Thermal System in Series with a Solar Thermal Collector in Laminar and Turbulent Regimes [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2023
Solar thermal (ST) collectors could only generate thermal power, while photovoltaic thermal (PVT) systems could provide both electricity and thermal power.
Ali Jabri   +2 more
doaj   +1 more source

Numerical study of high-temperature cascaded packed bed thermal energy storage system

open access: yesCase Studies in Thermal Engineering, 2022
The thermal energy storage system (TES) in the form of packed bed with encapsulated phase change materials (EPCMs) can further improve the thermal performance of ordinary TES.
Y.S. Sun   +5 more
doaj   +1 more source

Thermodynamic analysis of an integrated reversible solid oxide fuel cell system

open access: yesEnergy Conversion and Management: X, 2023
To improve the efficiency of reversible solid oxide cell (rSOC) systems, an rSOC thermal management system architecture is proposed, achieving integrated and efficient operation of rSOC.
Jun Pan   +3 more
doaj   +1 more source

The Evaluation of Thermal Stratification by Exergy [PDF]

open access: yes, 1989
What makes a good heat store? Is it a large store, with a large volume? And is the largest the best? We experienced this question when the first solar houses were built: many stores were oversized and never reached temperatures high enough for heating.
Hahne, Erich   +2 more
openaire   +2 more sources

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