Mathematical modelling and experimental investigation of solar air collectors with corrugated absorbers

Lin, Wenye; Ren, Haoshan; Li, Zhixiong

doi:10.1016/j.renene.2019.05.129

Cited by 40 publications

(22 citation statements)

References 18 publications

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“…Consequently, the heat transfer coefficient has increased and the thermal efficiency of the DPPF solar collector was enhanced. As it was stated by Lin et al (2020) in their work, the solar air heater thermal efficiency with corrugated absorber modification is 9% higher than that of a plain absorber. Moreover, the separation of flows into several parallel flows was the preponderant reason for the better performances of the solar air heater.…”

Section: Results and Disscussion Dppf Solar Collector Numerical Simulationmentioning

confidence: 76%

Performance Of An Air Solar Collector With Different Absorber Modifications Under The Climatic Conditions Of Marrakech-Morocco

Mellalou

Mouaky²,

Vall³

et al. 2021

Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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Solar air collectors are commonly used in a variety of domestic and industrial fields. The simple design and low maintenance cost are among their advantages compared to other solar collectors. However, the main challenge of this type of collector is the low heat transfer coefficient. In this work, the effect of different designs of the absorber plate (waved and V corrugated modification) on the thermal performances, the heat exchange effectiveness and the air outlet temperature of a Double-Pass Parallel-Flow air solar collector was investigated under the solar radiation of Marrakech-Morocco in a clear day and for three different mass flows rates (0.008 kg s -1 , 0.012 kg s -1 and 0.016 kg s -1 ). The numerical study was done using Computational Fluid Dynamics (CFD) by the mean of ANSYS Fluent 16.0. The obtained results showed that the V corrugated modification is the most efficient one with efficiency equal to 76.92 % and 87.97 % under the lowest and highest mass flow, respectively.

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Section: Results and Disscussion Dppf Solar Collector Numerical Simulationmentioning

confidence: 76%

Performance Of An Air Solar Collector With Different Absorber Modifications Under The Climatic Conditions Of Marrakech-Morocco

Mellalou

Mouaky²,

Vall³

et al. 2021

Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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“…To further rise the solar absorbance of the collector, a v‐corrugated plate has been used, where the sun arrays are reflected several times on the surface. The outcomes of this model have been compared with the flat plate absorber in several studies 14‐18 . El‐Sebaii et al 14 presented a comparison between the double‐pass flat and v‐corrugated plates of SAH systems.…”

Section: Introductionmentioning

confidence: 99%

“…The outcomes of this model have been compared with the flat plate absorber in several studies. [14][15][16][17][18] El-Sebaii et al 14 presented a comparison between the double-pass flat and vcorrugated plates of SAH systems. The findings show that the effectiveness of v-corrugated plate is larger than the conventional SAH by 11%-14%.…”

Section: Introductionmentioning

confidence: 99%

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Improving the performance of solar air heater using a new model of V‐corrugated absorber plate having perforations jets

Maher

Salih

2022

Intl J of Energy Research

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Summary An experimental investigation on the performance of a solar air heater (SAH) system has been performed using a new model of v‐corrugated absorber plate having perforations jets. The effectiveness of new model has been compared with the conventional v‐corrugated absorber plate under identical operating conditions to display the effectiveness of new model. The new collector has been referred to Model‐1, whereas the conventional model has been referred to Model‐2. The experimentations have been conducted in December 2020. The results demonstrate that the performance of Model‐1 is considerably higher than Model‐2 by 9%, 11%, and 11.5% for the air mass flowrates 0.01, 0.015, and 0.02 kg/s, respectively. As mass flowrate is increased, the performances of both models have increased, where the highest efficiencies of Model‐1 and Model‐2 have been found 84.5% and 73%, respectively. A substantial difference in temperature has been found in Model‐1 as compared to the rest model. Regardless of the air velocity values, the maximum outlet temperatures have been found in Model‐1, whereas the peak plate temperatures have been observed in Model‐2. The improvement in the performance of Model‐1 confirms that the utilize of perforations jets v‐corrugated absorber plate has an extreme action on the rate of heat transfer.

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“…This paper presents a comparison of air outlet temperature, absorber plate temperature, and thermal efficiency of solar air heaters having flat and corrugated plates and for 0.1075, 0.215, and 0.3225 m 3 /sec air flow rates. A mathematical model was proposed and collector outlet temperature was calculated by several researchers (19,20) , but in the present study, the authors calculate the value of collector outlet temperature at each definite discrete node over the entire plate which can be novel study. Also, an analysis was conducted in a semi-arid region where it can be practically implemented for the utilization of community for developing such solar collector assisted gadgets such as solar dryer, solar still, and many more.…”

Section: Introductionmentioning

confidence: 99%

Mathematical modeling and performance assessment of solar air collector

Mehta¹

2020

IJST

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Background: The use of solar air heater in drying has been increasing in recent years, because of their simplicity and economic configuration. Methods: Design and testing of the corrugated solar collector have been carried out in the present study. The overall system was designed and tested at Gujarat Power Engineering and Research Institute, Mehsana, India (GPERI, 23 • 31'37.4"N72 • 23'14.1"E). Exergetic efficiency, thermal efficiency, and temperature outlet at the same mass flow rate and solar irradiance were the major parameters for the present study. The designed system was tested by varying the mass flow rate of 0.1075, 0.215, and 0.3225 m 3 /sec. Findings: It was found that the temperature of the corrugated collector was maximum at 92 • C at solar radiation of 750 W/m 2. Whereas thermal efficiency was found to be 65.10% the same radiation. It was depicted from the tests that the corrugated plate performs more efficiently than a flat plate collector due to surface roughness. Applications: It is a good practice in a region where solar radiation is higher all year to implement this type of arrangement for the utilization of any solar gadget, and to enhance its performance efficiency. Novelty: it can be observed that collector outlet temperature in the semi-arid region of Gujarat was maximum at the minimum collector area. This should be the best design and thermal performance in a semi-arid climate.

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Mathematical modelling and experimental investigation of solar air collectors with corrugated absorbers

Cited by 40 publications

References 18 publications

Performance Of An Air Solar Collector With Different Absorber Modifications Under The Climatic Conditions Of Marrakech-Morocco

Performance Of An Air Solar Collector With Different Absorber Modifications Under The Climatic Conditions Of Marrakech-Morocco

Improving the performance of solar air heater using a new model of V‐corrugated absorber plate having perforations jets

Mathematical modeling and performance assessment of solar air collector

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