Performance Enhancements of Solar Dryers Using Integrated Thermal Energy Storage: A Review

Senthil, Ramalingam; Vijayan, G.; Phadtare, Gauri; Gupta, Bhupendra

doi:10.1007/978-981-15-9678-0_31

Cited by 3 publications

(1 citation statement)

References 38 publications

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“…Using an organic paraffin wax, with a melting point of 60 ℃ as phase change material (PCM) in a solar dryer chamber with black stones as the base, Radhakrishnan et al, [31] dried coconut from an initial moisture content of 55.5% to a final moisture content of about 9%, observing that the drying time of coconut decreased by about 28 and 52 h on using 100 g and 200 g of PCM, respectively, compared to open sun drying; the sensory characteristics like colour, taste, flavour, quality, and texture of the dried coconut sample were superior to the sun-dried coconut sample. Senthil et al, [32] also found the integration of PMC in the solar dryer to enhance drying and reduced drying time up to 60% over a solar dryer without PCM. Afriyie [6] observed from trials on a CDSCD that even though open sun drying could proceed very well at the initial phases of drying, the CDSCD always finishes the drying process faster.…”

Section: Introductionmentioning

confidence: 99%

The Effects of roof angle, inlet gap size and drying time on dryer mass flow rate and moisture content in a chimney-dependent solar crop dryer using design of experiments (DOE)

Agyei-Agyemang¹,

Tawiah²,

Afriyie³

et al. 2022

QJES

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A chimney dependent solar crop dryer (CDSCD) was designed and developed. Design of Experiments (DOE) was used to carry out experiments using a statistical three level non randomized factorial experimental design in Minitab statistical software version 19.0. The effect of three drying parameters, roof angle (º), Inlet gap size (mm), and time (h) on dryer inlet mass flow rate (kg/s) and moisture content (%) were studied. The regression results showed that there was a satisfactory fit of the model variability for both dryer inlet mass flow rate and crop moisture content. The p-value for each parameter was less than 0.005, which is statistically significant. The R-squared (R2) value was 94.67% for inlet air mass flow rate study and 99.72% for moisture content. It was observed that the optimal values for achieving a low moisture content response (≤ 24%) were roof angle of 81º, inlet to outlet cross-sectional area ratio of 1.08768:1 and a minimum drying time of 24 hours while the optimal values for achieving high inlet air mass flow rate (≥ 0.357 kg/s) were roof angle of 51º, inlet to outlet cross-sectional area ratio of 1.08768:1 and a minimum drying time of 5 hours. The findings could be implemented and utilized for achieving optimum ventilation and drying performances to refine dryer (CDSCD) design.

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Section: Introductionmentioning

confidence: 99%

The Effects of roof angle, inlet gap size and drying time on dryer mass flow rate and moisture content in a chimney-dependent solar crop dryer using design of experiments (DOE)

Agyei-Agyemang¹,

Tawiah²,

Afriyie³

et al. 2022

QJES

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Solar Powered Dryer for Drying and Storing Grapes

et al. 2023

2023 14th International Conference on Computing Communication and Networking Technologies (ICCCNT)

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Physical Characterization of Solar Thermal Energy Storage (TES) Materials for Solar Dryers: Case of Volcanic Stone (Pozzolan) in Chad

Boukar,

Tchoffo Houdji,

Tchuindjang Kwatchie

et al. 2024

J Energ Power Technol

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Many sensible heat storage materials are regularly used as thermal energy storage (TES) systems to improve the efficiency of solar dryers. The present work focuses on the effects of the volume and particle sizes of a volcanic stone (pozzolan) for the same purpose. Samples soaked in matt black and without soaking were also considered. Heat charge and discharge tests were carried out by exposing the pozzolan contained in a solar collector of the direct solar dryer (DSD) and indirect solar dryer (ISD) to the sun. Charge and discharge heat transfer models of the pozzolan enable determining the time constant . The results show that during the charge phase, the non-soaked sample for volumes of 25 l and 20 l in the ISD and the DSD stores heat more than the soaked sample. The half-filled solar collector for ISD with a pozzolan bed depth of 5 cm gives high time-constant values compared to other studied samples. Thus, the pozzolan charges for a longer time for this volume. Soaked samples discharge more slowly than non-soaked samples for particle sizes of 8 to 12 mm and 12 to 16 mm in the ISD and 4 to 8 mm and 8 to 12 mm in the DSD.

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Performance Enhancements of Solar Dryers Using Integrated Thermal Energy Storage: A Review

Cited by 3 publications

References 38 publications

The Effects of roof angle, inlet gap size and drying time on dryer mass flow rate and moisture content in a chimney-dependent solar crop dryer using design of experiments (DOE)

The Effects of roof angle, inlet gap size and drying time on dryer mass flow rate and moisture content in a chimney-dependent solar crop dryer using design of experiments (DOE)

Solar Powered Dryer for Drying and Storing Grapes

Physical Characterization of Solar Thermal Energy Storage (TES) Materials for Solar Dryers: Case of Volcanic Stone (Pozzolan) in Chad

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