Numerical study on thermal performance of a solar air collector with fins and baffles attached over the absorber plate

Aissaoui, Faris; Benmachiche, Abdelmoumène Hakim; Brima, Abdelhafid; Belloufi, Yousef; Belkhiri, M.

doi:10.18280/ijht.350209

Cited by 4 publications

(2 citation statements)

References 28 publications

(39 reference statements)

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“…The energy transition has become a big challenge to any government because of the dramatic climate change that occurred during the few last decades. The energy crisis in 1973 has promoted the renewable energies as an alternative to fossil ones [1]. Furthermore, this interest has become more pronounced with the emergence of laws and charters bound to protect the environment due to the KYOTO protocol since 1997.…”

Section: Introductionmentioning

confidence: 99%

Selective Surfaces for Photo-Thermal Conversion for Medium Solar Temperature Applications

Haddad¹,

Hatti²,

Rahmoun³

et al. 2022

IJHT

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There are many effective technologies that have been developed in the field of renewable energy. In this context, this study covers a selective coating used in the photo-thermal conversion on macro-scale devices. The objective of this work is to optimize a silicon-based paint layer for solar application in the low temperature range (T<80℃) where the optimization thickness is found 21 µm. In order to apply the optimization layer (21 µm) in the solar devices that work in the medium temperature range (80℃<T<200℃), we propose to deposit a thin film of indium oxide using an ultrasonic spray chemical vapor deposition USCVD process to obtain finally a bilayer structure (silicon-based paint Thickness-Insensitive Selective Solar TISS / In2O3). The obtained bilayer structure was tested and characterized using spectroscopy of UV-VIS and IR, the last one was used in two modes: specular and diffuse reflection. The structural properties were investigated using the X-rays diffraction (XRD) and the morphological character was analyzed using Scanning Electron Microscope (SEM). In addition, the global results denote that the deposition of In2O3 layer improves the reflection capacity of the optimization layer (21 µm) from 8 to 11 in the NIR range.

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Section: Introductionmentioning

confidence: 99%

Selective Surfaces for Photo-Thermal Conversion for Medium Solar Temperature Applications

Haddad¹,

Hatti²,

Rahmoun³

et al. 2022

IJHT

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“…Heat transfer between absorber plate and drying air has been one of the major challenges in the design and operations of the indirect solar dryer systems. Aissaoui et al [9] developed a mathematical model for simulating the influence of fins and baffles on the thermal performance behaviour of single pass solar air collector system working in forced convection. Due to the lack of theoretical work in the case of single pass solar air heaters having artificial roughness, they have proposed a theoretical model which consists of dividing the collector into several differential elements along the panel.…”

Section: Introductionmentioning

confidence: 99%

Thermal performance amelioration of flat plate solar collector of an indirect dryer

Blaise¹,

Magloire²,

Gbaha³

2018

MMEP

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Article presents an experimental investigation for the comparison of thermal performance of three different configurations flat plate solar collector. These flat plate solar collectors consist of glass cover and aluminium absorber plate which is painted with black paint. The edge and bottom surfaces are thermally insulated with a polystyrene layer for the first configuration, a polystyrene layer covered with a sheet of aluminium paper for the second one and a polystyrene layer covered with a sheet of aluminium paper and containing baffles for the third configuration. In this experiment, thermal efficiency of flat plate solar collector integrated with baffles was studied and compared with the two ordinary flat plate collectors. The results showed that integrating flat plate solar collector with baffles significantly increased the thermal efficiency of the system. It was noted that a mean thermal efficiency is 20.3 %, 29.8 % and 35.1 % for the first, second and third configuration, respectively. The results show a maximum temperature rise of 23.5 °C, 31.6 °C and 34.6 °C with respect to the inlet air temperature, for the first, second and third configuration, respectively. Baffles improve the thermal performance of the flat plate solar collector by increasing the outlet temperature.

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Investigation of the use of new solar air heaters for drying agricultural products

2021

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This article discusses the study of energy-saving technologies that have become a topical issue today. Types of solar heating collectors, the principles of operation, and their constructive structure were studied. A new technology developed based on the analyses proposed to dry the agricultural products. Also, in the current presentation, the technologies used in the context of the technologies and the reduction issues and technologies have been considered. Experimental experiments are also provided based on the proposed technology in seasonal (spring, summer, autumn, winter). In the study case, the operation principle of the operation of a flat surface air heater is studied. The article provides the basics of twice the shortening of air canals to a common full-length sunny air heater. The study learned the issues of reducing the local resistance ratio of the device concerning a common full-wide air heater. Raise the temperature of the sun's agents discussed in the article; reduction issues are analyzed.

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Numerical study on thermal performance of a solar air collector with fins and baffles attached over the absorber plate

Cited by 4 publications

References 28 publications

Selective Surfaces for Photo-Thermal Conversion for Medium Solar Temperature Applications

Selective Surfaces for Photo-Thermal Conversion for Medium Solar Temperature Applications

Thermal performance amelioration of flat plate solar collector of an indirect dryer

Investigation of the use of new solar air heaters for drying agricultural products

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