Performance assessment of flat-plate solar collector with internal fins and porous media through an integrated approach of CFD and experimentation

Kansara, Rohan V.; Pathak, Markand; Patel, Vivek

doi:10.1016/j.ijthermalsci.2021.106932

Cited by 44 publications

(4 citation statements)

References 27 publications

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“…The 𝑋 and 𝑒/𝐷 were found to have the best relationship when expressed as a polynomial of the second-order equation. The relationship between 𝑋 and 𝑒/𝐷 is expressed as Equation (20).…”

Section: 𝑁𝑢 𝑋 𝑅𝑒mentioning

confidence: 99%

“…Their study showed that the higher fin height resulted in higher daily thermal efficiency of SAH due to increased heat transfer area. Kansara et al [20] compared three different SAH: SAH with an empty channel, SAH with a fin, and SAH with porous media. This research indicated that the SAH with porous media performed better than SAH with an empty channel or a fin.…”

Section: Introductionmentioning

confidence: 99%

“…The relationship between X 1 and e/D is expressed as Equation (20). ln(X 1 ) = ln(X 2 ) + 1.0887 ln(e/D) + 0.1602[ln(e/D)] 2 (20) The above equation can be rearranged as Equation ( 21). The Equation ( 21) can be rewritten as Equation (22).…”

mentioning

confidence: 99%

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CFD Analysis of the Heat Transfer and Fluid Flow Characteristics Using the Rectangular Rib Attached to the Fin Surface in a Solar Air Heater

et al. 2023

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This study discussed the effect of ribbed fin, which was suggested by the authors, on the enhancement of heat transfer and flow characteristics of fluid in a solar air heater. The ribbed fin has a rectangular rib at the base and side surfaces of the fin. Thus, it can increase the heat transfer coefficient in the fluid field of a solar air heater as well as extend the heat transfer area. The simulation was performed with various Reynolds numbers, relative heights, and pitches of the rib. The presence of the rib enhances the heat transfer performance by 3.497 times over a smooth fin. However, the addition of the rib also increases pressure drop. Thus, the thermo-hydraulic performance, which considers both heat transfer enhancement and pressure drop increase, was also discussed. Furthermore, this study developed correlations for the Nusselt number and friction factor as a function of geometric condition of the rib and Reynolds number. The correlations accurately predicted the Nusselt number for the base and side surfaces of the fin and friction factor with mean absolute percent errors of 4.24%, 4.53%, and 7.33%, respectively.

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Section: 𝑁𝑢 𝑋 𝑅𝑒mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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CFD Analysis of the Heat Transfer and Fluid Flow Characteristics Using the Rectangular Rib Attached to the Fin Surface in a Solar Air Heater

et al. 2023

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“…The results showed that coated pebble absorbers could be a less expensive, less-polluting alternative to conventional, expensive, polluting FPC absorbers. Kansara et al [66] focused on the cost-effectiveness and feasibility of air-based working fluid Linear Fresnel Reflector (LFR) plants, with ambient air serving as the HTF. They examined a unique FPSC incorporating fins and porous media.…”

Section: Modifications In Collector/absorber Designmentioning

confidence: 99%

Sustainable Energy Progress via Integration of Thermal Energy Storage and Other Performance Enhancement Strategies in FPCs: A Synergistic Review

Pathak,

Tazmeen,

Chopra

et al. 2023

Sustainability

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Flat plate collectors (FPCs) are the leading solar thermal technology for low-medium range temperature applications. However, their expansion in developing countries is still lacking because of their poor thermal performance. Improving the thermal performance of flat plate collectors (FPCs) is a crucial concern addressed in this review This study comprehensively discussed the performance improvement methods of FPCs, such as design modification, reflectors, working fluid, and energy storage materials, by covering current issues and future recommendations. Design factors such as coating and glass cover thickness, thickness of absorber plate and material, air gap between the glass cover and absorber plate, and riser spacing, along with insulation materials, are examined for their impact on FPC performance. Absorber design changes with selective coatings for improving the heat transmission rate between the working fluid and absorber are critical for enhancing collectors’ thermal output. The nanofluids utilization improved FPC’s thermal performance in terms of energetic and exergetic outcomes in the 20–30% range. Moreover, adding a heat storage unit extends the operating hours and thermal output fluctuations of FPCs. Research suggests that employing turbulators and nanofluids as heat transfer fluids are particularly effective for enhancing heat transfer in FPCs. This comprehensive review serves as a critical tool for evaluating and comparing various heat transfer augmentation techniques, aiding in the selection of the most suitable option.

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Performance Evaluation of Single Pass Solar Air Heater with Stepped-Type Arrangement of Metal Foam by a Numerical Study

Diganjit,

Gnanasekaran

2023

Lecture Notes in Mechanical Engineering

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Performance assessment of flat-plate solar collector with internal fins and porous media through an integrated approach of CFD and experimentation

Cited by 44 publications

References 27 publications

CFD Analysis of the Heat Transfer and Fluid Flow Characteristics Using the Rectangular Rib Attached to the Fin Surface in a Solar Air Heater

CFD Analysis of the Heat Transfer and Fluid Flow Characteristics Using the Rectangular Rib Attached to the Fin Surface in a Solar Air Heater

Sustainable Energy Progress via Integration of Thermal Energy Storage and Other Performance Enhancement Strategies in FPCs: A Synergistic Review

Performance Evaluation of Single Pass Solar Air Heater with Stepped-Type Arrangement of Metal Foam by a Numerical Study

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