Energy and exergy experimental analysis for innovative finned plate solar air heater

Alrashidi, Abdullah; Altohamy, Ahmed A.; Abdelrahman, M.A.; Elsemary, Ismail M.M.

doi:10.1016/j.csite.2024.104570

Case Studies in Thermal Engineering

2024

DOI: 10.1016/j.csite.2024.104570

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Energy and exergy experimental analysis for innovative finned plate solar air heater

Abdullah Alrashidi,

Ahmed A. Altohamy,

M.A. Abdelrahman

et al.

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2024

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Cited by 4 publications

References 47 publications

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Effect of absorber shape on energy, exergy efficiency and enviro‐economic analysis of solar air collector: An experimental study

Touhami,

Boudhiaf,

Kabeel

et al. 2024

Env Prog and Sustain Energy

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The efficiency of solar air collectors, which are intended to convert solar energy into thermal energy, is the subject of numerous studies that aim to assess and improve it. Solutions for sustainable energy heavily rely on these systems. Making the right choice regarding the best method for absorbing solar radiation and reducing heat losses is what will ultimately lead to their improved performance. In this work, wavy and corrugated absorbers were suggested inside a solar air collector. The aim of this article is to study experimentally the thermal performance of the solar air collector when using wavy shape of absorber and corrugated shape of absorber instead of the flat shape of absorber under the same weather conditions of Sfax region central‐eastern of Tunisia. The suggested shapes of absorber augmented sun exposure and heating area. The results obtained from this experimental study show that switching from a flat plate absorber to both wavy and corrugated absorbers resulting significant performance gains. The absorber with waves showed a significant improvement in daily thermal efficiency of 22.89%, and the absorber with corrugations showed an even greater improvement of 40.56%. Comparable patterns were noted in daily exergy efficiency, where the corrugated absorber demonstrated an astounding 44.83% increase and the wavy absorber provided a 23.24% improvement. Notably, when total cost savings and monthly CO2 reduction were taken into account, the corrugated absorber turned out to be the best option. These findings highlight the importance of absorber form in optimizing thermal and energy efficiency, which may have positive effects on the economy and environment.

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Effect of absorber shape on energy, exergy efficiency and enviro‐economic analysis of solar air collector: An experimental study

Touhami,

Boudhiaf,

Kabeel

et al. 2024

Env Prog and Sustain Energy

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Analysis of exergy in a dimple-roughened solar thermal collector using MATLAB simulation

Kumar,

Sethi,

Thakur

et al. 2024

J Therm Anal Calorim

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In the current study, the performance of a dimple-roughened solar thermal collector (DRSTC) is investigated within a ($${\text{Re}}_{\text{xx}}$$ Re xx ) range that spans from 3000 to 48,000. Under constant solar intensity ($${I}_{\text{sr}}$$ I sr =1000 $${\text{Wm}}^{-2}$$ Wm - 2 ), relative roughness height ($${e}_{\text{d}}/{D}_{\text{h}}$$ e d / D h ) varied from 0.021 to 0.036, relative roughness pitch ($$p/{e}_{\text{d}}$$ p / e d ) from 10 to 20, arc angle ($${\alpha }_{\text{a}}$$ α a ) from 45 to 60°, and temperature rise parameter from 0.003 to 0.02, and the proposed model predicts exergy efficiency of the SAH, and the results obtained can be used as reference for the design of new solar thermal systems. The assessment makes use of advanced MATLAB simulations in order to evaluate the exergetic efficiency $${(}\eta_{{{\text{ex}}}} )$$ ( η ex ) of a DRSTC. At lower $${\text{Re}}_{\text{xx}}$$ Re xx values, $${(}\eta_{{{\text{ex}}}} )$$ ( η ex ) increases uniformly; however, stabilization and decline occur at higher $${\text{Re}}_{\text{xx}}$$ Re xx values. The highest $${(}\eta_{{{\text{ex}}}} )$$ ( η ex ) for the DRSTC is 1.47% under a temperature rise parameter $$(\Delta T/I_{{{\text{sr}}}} )$$ ( Δ T / I sr ) of 0.0071 $${\text{Km}}^{2}{\text{W}}^{-1}$$ Km 2 W - 1 for obtaining optimum values of $${e}_{\text{d}}/{D}_{\text{h}}$$ e d / D h = 0.036, $$p/{e}_{\text{d}}$$ p / e d = 10, and $$\alpha_{a}$$ α a = 60°. This research illustrates the usefulness of MATLAB for solar energy system analysis and optimization by integrating simulation and experimental data. This investigation further supports the feasibility of the proposed collector design.

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Energy and exergy analysis of solar air heater utilizing noble half conical ribs of various designs: an experimental study

Shankar,

Kumar,

Pandey

et al. 2024

J Braz. Soc. Mech. Sci. Eng.

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Energy and exergy experimental analysis for innovative finned plate solar air heater

Cited by 4 publications

References 47 publications

Effect of absorber shape on energy, exergy efficiency and enviro‐economic analysis of solar air collector: An experimental study

Effect of absorber shape on energy, exergy efficiency and enviro‐economic analysis of solar air collector: An experimental study

Analysis of exergy in a dimple-roughened solar thermal collector using MATLAB simulation

Energy and exergy analysis of solar air heater utilizing noble half conical ribs of various designs: an experimental study

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