Comparative study on the performance of a new solar air collector with different surface shapes

Li, Shuilian; Wang, Hui; Meng, Xiangrui; Wei, Xinli

doi:10.1016/j.applthermaleng.2016.12.026

Cited by 58 publications

(26 citation statements)

References 18 publications

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“…The results obtained in this study are very similar to a number of studies. [3][4][5][6][7][8][9]11 In accordance with these references, a tight air channel which the width is between 7.5 cm and 10 cm results in a significant improvement in the performance of the collector. In addition, the collector efficiency improves with increasing of mass flow due to improved heat transfer to the air flow.…”

Section: The Efficiency Variation Of the Solar Collectors Systemssupporting

confidence: 65%

“…Li et al presented a comparative study on the performance of a new solar air collector with different surface shapes: sinusoidal corrugated plate, protrusion plate, sinusoidal corrugated and protrusion plate and a base flat-plate. 3 The results show that the changing shape of the absorber plate is better than the flat plate. Gianpiero et al reviewed the experimental results in flat solar thermal collectors over the past decade.…”

Section: Introductionmentioning

confidence: 94%

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Comparison of Thermal Performance Between Two Solar Air Collectors for an Indirect Solar Dryer

Essalhi¹,

Tadili²,

Bargach³

2018

JPS

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The absorber of the first collector consists of an alveolar plate made of polyethylene, with the alveolus having a section of 1 cm². The absorber of the second collector consists of two stainless aluminium plates, corrugated and superimposed in opposition to form parallel cylinders, with a diameter of 9 cm. The results show that the corrugated absorber collector offers better thermal performance than a polyethylene plate collector. The average efficiency was found to be 77% under forced convection.

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Section: The Efficiency Variation Of the Solar Collectors Systemssupporting

confidence: 65%

Section: Introductionmentioning

confidence: 94%

Comparison of Thermal Performance Between Two Solar Air Collectors for an Indirect Solar Dryer

Essalhi¹,

Tadili²,

Bargach³

2018

JPS

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“…When comparative tests are to be conducted, all the solar heating collectors should be supported on the same roof in order to ensure the same extent of intensity of solar radiation falling on them to minimize the uncertainty or error. 134 Finally, by identifying the uncertain factors at the design stage can enhance further research on optimization of uncertainty for solar air heaters and can be accurately solved. Therefore, during planning and design of experiments, uncertainty analysis is capable of producing an intended result that is desired to establish the validity and accuracy of the experiments.…”

Section: F I G U R E 1mentioning

confidence: 99%

A comprehensive review of experimental investigation procedures and thermal performance enhancement techniques of solar air heaters

Chamarthi

Singh

2020

Intl J of Energy Research

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This review composition aimed to comprehensively present the experimental investigation procedures and thermal performance augmentation techniques of solar air heaters. Various testing standards such as static and dynamic tests, and performance parameters, such as, thermal, thermo-hydraulic, and exergy efficiencies, are incorporated to present the experimental investigation procedures. The present review work deals with testing conditions (indoor and outdoor), instrumentation, various parameters of interest with corresponding optimum values, their uncertainty levels together with SAH orientation, air flow type, thermal energy storage devices, duct modifications and heat transfer surfaces using fins, baffles, and ribs employed to enhance the thermal performance. The authors of this review work believed that the current composition constitutes a summary of details to quickly access the information for analyzing the various experimental investigation procedures and heat transfer augmentation techniques along with the optimum values of flow and geometric parameters. Moreover, economical and efficient solar air-heating systems with low pressure drop and high heat exchange to air are presented and reviewed.

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“…In the Solar Drying method the food and perishable items are directly placed on the ground floors, which can reach temperatures higher than the temperatures in open drying, and left there for a number of days to dry [9]. In solar air heaters, heat transfer from sun to absorber and absorber to fluid occurs.…”

Section: Introductionmentioning

confidence: 99%

Solar Drying System Integrated with Phase Change Material PCM

Salve,

Fulambarkar,

Khune

2020

IJEAT

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Abstract: The post-harvest losses for agricultural products are around 30%-40% [1]. Drying is a one of the necessary processes for the preservation of agricultural products. Agricultural products require hot air of temperature above 40 ºC for drying. Open sun drying takes more time for drying of products due to slower drying rates. Also, various factors hamper the quality of the dried product. Due to the moisture content in the products bacterial attack is possible. India being the tropical region has good solar radiation. It is advisable to use the solar dryer to avoid spoilage of quality of products [2]. In this work, the compact and portable forced convection solar dryer designed and developed for drying chilies with thermal energy storage. Solar dryer is having capacity of 15 kg and it consists of the flat plate collector based air heating system with thermal energy storage. Paraffin wax used as phase change material (PCM). The CFD simulations carried out for the solar dryer to study the temperature distribution over the surfaces of the flat plate collector and inside the drying chamber, velocity of air and phase change behavior of paraffin wax inside the trays. The energy stored in the paraffin wax and time required for charging and discharging of paraffin wax is found out. The time for which temperature in the drying chamber is maintained above 40 o C is also found out. Results of CFD simulations validated with the experimental results.

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Comparative study on the performance of a new solar air collector with different surface shapes

Cited by 58 publications

References 18 publications

Comparison of Thermal Performance Between Two Solar Air Collectors for an Indirect Solar Dryer

Comparison of Thermal Performance Between Two Solar Air Collectors for an Indirect Solar Dryer

A comprehensive review of experimental investigation procedures and thermal performance enhancement techniques of solar air heaters

Solar Drying System Integrated with Phase Change Material PCM

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