Thermodynamic optimization of solar flat-plate collector

Saha, Samir Kumar; Mahanta, Dhriti

doi:10.1016/s0960-1481(00)00171-3

Cited by 23 publications

(6 citation statements)

References 2 publications

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“…Otherwise, [10], apply the EGM to optimize the design of a grain solar dryer, with natural air circulation. An analysis similar to that developed by Bejan is also presented in [11] by Saha, and in [12] by Torres. In other works of Torres, there are two additional developments: one explores the application of the EMG in solar collectors for drying processes [13], and another explores the application of the EMG to determine the temperature and length of the optimal fluid conduit channel, in solar collectors of different configurations [14].…”

Section: Introductionmentioning

confidence: 79%

Entropy generation analysis for the design of a flat plate solar collector with fins

Muñoz

Roa

Correa

2020

DYNA

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This article describes the optimal design of a flat-plate solar collector with fins, based on the minimum entropy generation criterion. The design parameters were optimized, considering entropy generation due to heat transfer and airflow. The latter has not been considered in previous works. The flat plate in the collector is assimilated to a finned heat sink. The dimensionless entropy generation variation is analyzed to increase values of the number of fins, as well as for different plate thicknesses and heights. We also considered variations in airflow velocity. Our data shows that airflow velocity greatly influences entropy generation. Values other than the optimum found, caused a considerable growth of total entropy. For a collector area of 4 m2, and an outlet temperature of 50°C, the optimum parameters that minimize the entropy generation rate were: 9 fins on each side of the collector plate, a height of 5 x10-2 m, a thickness of 25x10-3m, and an air velocity variable between 0.015 and 0.046 m/s. This development is relevant to the design of flat plate solar collectors, for grain drying applications.

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Section: Introductionmentioning

confidence: 79%

Entropy generation analysis for the design of a flat plate solar collector with fins

Muñoz

Roa

Correa

2020

DYNA

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“…Saha and Mahanta [30] investigated the thermodynamic optimisation of flat-plate solar collectors, with their model focusing on minimising all factors affecting entropy generation. Their study showed that an optimum operating regime existed.…”

Section: Flat-plate Collectorsmentioning

confidence: 99%

A review of solar collectors and thermal energy storage in solar thermal applications

2013

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Thermal applications are drawing increasing attention in the solar energy research field, due to their high performance in energy storage density and energy conversion efficiency. In these applications, solar collectors and thermal energy storage systems are the two core components. This paper focuses on the latest developments and advances in solar thermal applications, providing a review of solar collectors and thermal energy storage systems. Various types of solar collectors are reviewed and discussed, including both non-concentrating collectors (low temperature applications) and concentrating collectors (high temperature applications). These are studied in terms of optical optimisation, heat loss reduction, heat recuperation enhancement and different suntracking mechanisms. Various types of thermal energy storage systems are also reviewed and discussed, including sensible heat storage, latent heat storage, chemical storage and cascaded storage. They are studied in terms of design criteria, material selection and different heat transfer enhancement technologies. Last but not least, existing and future solar power stations are overviewed.

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“…Entropy is generated in the transport fluid and in the medium between the absorber and cover. Entropy generation in the transport fluid has been studied [5][6][7][8]). This paper focuses on entropy generation in the spacing.…”

Section: Energy and Entropy Flowsmentioning

confidence: 99%

Performance Analysis and Optimization of a Vapor-filled Flat-plate Solar Collector

Makhanlall

Jiang

2015

Energy Procedia

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Solar thermal collectors are certain to play a primary role in reducing energy consumption in buildings. At present, significant efforts are being made to find new ways to enhance their performance. An emerging technique is studied in this work based on thermodynamic analysis. The study shows how thermodynamic 2 nd -law analysis can be used to complement the 1 st law analysis approach for a FPSC (flat-plate solar collector) in which the confined air in the spacing between the absorber and glass cover is replaced by water-vapor. In the analysis, the influence of key parameters such solar irradiation, inclination angle, as well as the use of absorbers with different emissivity values, are investigated.

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Thermodynamic optimization of solar flat-plate collector

Cited by 23 publications

References 2 publications

Entropy generation analysis for the design of a flat plate solar collector with fins

Entropy generation analysis for the design of a flat plate solar collector with fins

A review of solar collectors and thermal energy storage in solar thermal applications

Performance Analysis and Optimization of a Vapor-filled Flat-plate Solar Collector

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