Parametric study on the performance of solar air heater equipped with louvered fins

Chand, Subhash; Chand, Prabha

doi:10.1007/s12206-018-0747-y

Cited by 20 publications

(8 citation statements)

References 19 publications

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“…The comparison solar air heater used longitudinal fins and without fin also carried out. The result showed the thermal efficiency is 40.02% for SAH with fins and 34.92% for SAH without fins [1]. The same result was showed by a solar air heater that used aluminum foam obstacles.…”

Section: Related Worksupporting

confidence: 61%

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Thermal Analysis of Solar Air Heater with Ventilator Turbine and Fins

Safitra

Diana

Agil

et al. 2020

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Solar air heater (SAH) is a renewable energy application for the drying process. SAH has a challenge to produce high performance under uncertain weather. The performance of SAH can be enhanced by providing the absorber plate by adding the fins. This study aims to evaluate the thermal performance of SAH with rectangular fins SAH at low air velocity. This study compares the performance of SAH without fins and SAH with rectangular fins. Two variations of a tilt angle of SAH are 0° and 30° which are observed in this study. The SAH uses a ventilator turbine to suck air into the collector box. The air velocity is 0.01 m/s. The method is experimental. The SAH is tested under real condition from 9 a.m. to 4 p.m. The measurement tools consist of a pyranometer, an anemometer, a temperature sensor in the inlet section, 3 sensors in the absorber plate, a sensor in the outlet section, 6 temperature sensors in the drying cabinet. The result showed the thermal efficiency of SAH with rectangular fins is 29.67 % higher than SAH without fins at 0˚ tilt of angle at noon. The thermal efficiency of SAH with rectangular fins is 25.26 % higher than that of without fins at 30˚ tilt of angle at noon.

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Section: Related Worksupporting

confidence: 61%

“…Solar Air Heater (SAH) has many advantages such as low cost electricity, no pollution, and easy to use. A lot of industries use SAH for various applications especially for crop and drying agricultural products [1]. The solar air heater (SAH) is an air heater whose principal works by using drying with the help of the sun.…”

Section: Introductionmentioning

confidence: 99%

Thermal Analysis of Solar Air Heater with Ventilator Turbine and Fins

Safitra

Diana

Agil

et al. 2020

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“…Few other studies have also been reported with the use of fins like rectangular, louvered, and offset fins to improve the overall performance of SAH. 18,19 From the literature study, it was concluded that the jet impingement on the heated surface and attaching of extended surfaces effectively enhance the heat transfer rate from the absorber plate. The performance of these techniques were individually analyzed, and their characteristics were reported separately.…”

Section: Introductionmentioning

confidence: 99%

Influence of twisted tape fins on heat transfer and friction factor characteristics for impinging jet solar air heater

Matheswaran

Sahu

2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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In this work, an experimental study was carried out to investigate the enhancement of heat transfer and friction factor characteristics of an impinging jet solar air heater integrated with twisted tape fins. During the analysis, the Reynolds number fin design parameters namely twist ratio (Y), and pitch ratio (py) are varied from 3500 –13500, 5.5–9.5, and 0.1–0.3, respectively. During the experimentation, the constant heat flux of 1000 W/m2 was maintained on the absorber plate. From the results, it was observed that the heat transfer rate increases while increasing the twist ratio up to 7.5 and further increase in twist ratio diminishes the performance. It was also concluded that the rise in pitch ratio (py) deteriorates the rate of heat transfer. The present work enhances the heat transfer and friction factor by the maximum of 1.9 and 1.81 times as compared with the conventional jet impingement solar air heater at identical operating conditions.

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“…They developed the correlation for Colburn and friction factor as a function of operating and porosity parameters. Chand and Chand [6] investigated a theoretically model of LFSAH. The result showed that the thermal efficiency of LFSAH was 79% higher than the PSAH.…”

Section: Introductionmentioning

confidence: 99%

Effects of Louvered Parameters on Exergetic Performance of Louvered Finned Solar Air Heater

Chand¹,

Chand²

2021

IJHT

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The aim of the present study to improve the performance of solar air heater because of low thermo-physical properties of air. In the current work, an attempt has been made to improve the performance of the heater by employing louvered fins to the absorber plate, as it not only enhances heat transfer coefficient but also improve heat transfer area. The effect of exergy performance on the geometrical parameters of louvered fin i.e., louvered angle, louvered pitch and louvered length has been studied and analyzed. The results are compared to plane solar air heater (PSAH) to evaluate the effectiveness of louvered finned solar air heater (LFSAH). The exergy efficiency of LFSAH is comparatively higher for all the operating conditions except for higher mass flow rate where it may even go below that of PSAH; possibly due to the higher pressure drop and more loss of exergy at high mass flow rate. In addition, the results conclude that for louvered parameters viz., louvered angle 20°, fin pitch to louvered pitch ratio 0.75 and louvered length to louvered pitch ratio 1.25, high exergy performance of SAH is obtained as compared to other louvered parameter values.

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Parametric study on the performance of solar air heater equipped with louvered fins

Cited by 20 publications

References 19 publications

Thermal Analysis of Solar Air Heater with Ventilator Turbine and Fins

Thermal Analysis of Solar Air Heater with Ventilator Turbine and Fins

Influence of twisted tape fins on heat transfer and friction factor characteristics for impinging jet solar air heater

Effects of Louvered Parameters on Exergetic Performance of Louvered Finned Solar Air Heater

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