Thermal performance study of a multi-pass solar air heating collector system for drying of Roselle (Hibiscus sabdariffa)

Kareem, M. W.; Habib, Khairul; Ruslan, Mohd Hafidz; Saha, Bidyut Baran

doi:10.1016/j.renene.2016.12.099

Cited by 47 publications

(11 citation statements)

References 26 publications

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“…The payback period is 2.14 years. [44].The major disadvantage of the solar dryer is that it can be useable and effective during sunny hours and not effective during cloudy weather.…”

Section: Materials Used For Thermal Energy Storage Devicementioning

confidence: 99%

Recent advances in solar drying technologies: A Comprehensive review

Behera

Mohanty

2022

Journal of Energy Systems

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Preservation of food and vegetable products is an age-old practice for the retention of flavor, appearance, and quality. From ancient times, driers for drying food grains work on direct sun rays, firewood, fossil fuels, and coals causing carbon release. These available methods are expensive, unreliable, and unhygienic; thereby the use of a solar dryer working on free and clean energy is better for higher value addition to food preservation. The objective of this exploration is to study the recent developments in the use of different types of solar dryers for drying foods, vegetables, seafood, etc. There exist many studies on the effects of the parameters such as temperature, relative humidity, and speed of air, turbulence effect, sun irradiation, and the latitude of the location in the solar drying process. The findings show that the climate conditions such as solar radiation and atmospheric air play an important role in the drying efficiency of the solar dryer. A phase change material stores thermal energy during the daytime and releases heat during the nighttime. This process improves thermal efficiency and reduces heat loss during the drying period. On the one hand, a hybrid dryer integrated with a solar panel produces electricity for the operation of a DC blower circulating hot air inside the drying chamber for better drying. In addition, a critical review has been performed on the usage of different absorbing plates increasing heat transfer rate, use of various phase change materials for heat storage, and analysis of CFD simulation.

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“…The payback period is 2.14 years. [44].The major disadvantage of the solar dryer is that it can be useable and effective during sunny hours and not effective during cloudy weather.…”

Section: Materials Used For Thermal Energy Storage Devicementioning

confidence: 99%

Recent advances in solar drying technologies: A Comprehensive review

Behera

Mohanty

2022

Journal of Energy Systems

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“…The study associated the drying of open sun drying (OSD) performance and granite based multi-pass solar air heating collector (MPSAHC) as SHS. The study recorded that drying roselle leaves in MPSAHC results in 21 hours earlier drying time than drying in OSD [34]. In drying onion, [35] used and placed granite grits below the absorber plate.…”

Section: Solid Sensible Heat Storagementioning

confidence: 99%

A Review on Possible Combination of Solar Dryer Materials for Crops in the Philippines

Oria¹

2022

etj

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Direct sun drying, also known as open sun drying, is the most cost-effective and environmentally beneficial technique of agricultural product preservation, but it degrades crop quality. Solar dryers play an essential part in producing high-quality and hygienic products; however, it is cost and maintenance expensive. Also, it has an inadequate drying performance when off sunshine period, night-time, and especially during different seasons. As a result, this study looks at a variety of low-cost options, high-efficiency materials that have been used in previous studies to give further research, an idea on what would be the ideal combination of cost-effective materials that can be used by small-scale farmers in far-flung areas with off-grid. In addition, this study explores several optimization methodologies, procedures, and processes for efficiently storing energy even when solar radiation is low to further optimize and prolong the solar dryers’ performance.

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“…Another experimental drying application (for roselle) of a SAH is examined by Kareem et al (2017) The authors investigated the drying performance of a multi-pass flat plate SAH integrated with granite for heat storage. Their design achieved a drying rate of 33.57 g (kg m 2 h) -1 with an efficiency of 64%.…”

Section: Literature Reviewmentioning

confidence: 99%

Theoretical and Experimental Investigation of v-Corrugated Solar Air Heater for Space Heating

ÖZDENEFE¹,

ALTEER²

2022

Isı Bilimi Ve Tekniği Dergisi

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This work is an effort to investigate the thermal performance of a V-Corrugated Solar Air Heater (SAH), which is intended for supplying heating to an office space having a floor area of 84 m2. Thermal performance investigation has been carried out both theoretically and experimentally. V-Corrugated SAHs have not been investigated for space heating in offices, hence this study aims to contribute by proposing and promoting them for this purpose. The load of the office space has been evaluated by the Energy Plus building simulation program as 4546 W. Thermal performance of the SAH is investigated by solving the governing equations with developed MATLAB code and concurrently by carrying out real-time monitoring of the operating parameters (e.g. component temperatures, air speed, etc.) of the SAH. It is aimed to obtain the temperature of each component of the SAH, useful heat output, thermal efficiency, number of SAHs and the corresponding area that is necessary to meet the heating load. It is found that 9 SAHs with 16 m2 are required to supply the target load for the experimental case and 6 SAHs with 10 m2 for the theoretical case.

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Thermal performance study of a multi-pass solar air heating collector system for drying of Roselle (Hibiscus sabdariffa)

Cited by 47 publications

References 26 publications

Recent advances in solar drying technologies: A Comprehensive review

Recent advances in solar drying technologies: A Comprehensive review

A Review on Possible Combination of Solar Dryer Materials for Crops in the Philippines

Theoretical and Experimental Investigation of v-Corrugated Solar Air Heater for Space Heating

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