Thermodynamics 2.0 | 2022 Program: Sessions and Abstracts
Mon - Wed, July 18 - July 20 , 2022 , Boone, North Carolina
Session T16: Complex and Evolving System
15:15-16:15. Wednesday July 20, 2022
Title: Maximum Work Rate Extractable from the Sun
Bio-sketch
Mechanical Engineer (Honours course at Faculty of Engineering of the UAEM); the dissertation was awarded as winner of the XXVI National Thesis AwardsXXVI National Thesis Awards by INEEL. Master’s Studies in Renewable Energies (UNEATLÁNTICO), Master’s in Environmental Management and Auditing (UNINI) and Master’s in Engineering Sciences (Honours course at Faculty of Engineering of the UAEM). Active member of ASME, ISES and E4C since 2013. Journal referee for Renewable Energy and Solar Energy of Elsevier. Professor and research assistant at the Faculty of Engineering in the Department of Engineering in Sustainable Energy Systems in the Universidad Autónoma del Estado de México. Current lines of research and development focus on the formulation of finite-time thermodynamic models and maximization of exergy for solar power plants, and the design of solar concentrators for dry sterilization, direct steam generation and wastewater treatment using primarly nonimaging optics.
Author(s):
(Universidad Autónoma del Estado de México)
Abstract:T16.144
Abstract
The socio-economic model based on the fossil fuels is unstainable, resulting into various crisis related to the supply and demand, therefore, it is in the process of a conscious transition. It is urgent to shift from the current centralized system based on fossil fuels toward a system that is distributed and based on local renewable energy. Solar energy is an important part of the world’s energy mix. Solar energy is clean, environmentally friendly, and freely available over the planet.
Over the last 60 years, several researchers such as Jeter, Spanner, Petela, Press, Badescu, had proposed different models to define the physical limit of solar radiation conversion. These models overestimate the real maximum work rate extractable from solar radiation. The exergy of solar radiation is a useful index in the preliminary assessment of the performance of solar technologies, since the model provides upper limit of the efficiency of the system. A practical engineering model, however, should consider physical constraints associated with this useful index. In the present work, a generalized expression of a work extraction from solar radiation is presented as a function of the high-temperature radiation reservoir and a low-temperature heat sink that take into account a physical limit of the energy conversion.
Keywords: solar radiation, exergy, work extractor, exergy analysis, finite-time thermodynamics