Advancements in ginger drying technologies

Malik, Amit; Shimpy,; Kumar, Mahesh

doi:10.1016/j.jspr.2022.102058

Cited by 16 publications

(10 citation statements)

References 92 publications

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“…g p c,p-a p p a r,p-g p p g w p p amb (11) where α p is absorptivity of absorbing plate and U w is wall heat loss coefficient. The value of wall heat loss coefficient (U w ) can be given as 62…”

Section: Theoretical Considerationsmentioning

confidence: 99%

“…Many eminent researchers have presented detailed overviews on these advancements. [9][10][11][12][13][14][15] There have been several factors responsible for optimum drying of a commodity and the temperature of the drying air/chamber is one of the most significant one, as, it directly influence the moisture evaporation, drying time, product nutrition, and economics. Qu et al 16 studied the effect of drying air temperature on the quality of peanuts and reported that the kernel breakage percentage increased significantly as the drying temperature increased from 45°C.…”

Section: Introductionmentioning

confidence: 99%

“…In the last few decades, several advancements have been made in solar dryers. Many eminent researchers have presented detailed overviews on these advancements 9–15 …”

Section: Introductionmentioning

confidence: 99%

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Experimental and simulation studies on the no‐load performance assessment of a domestic solar dryer

Shimpy,

Kumar,

Kumar

2024

Heat Trans

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Solar dryers have been tested with various simple and complex design modifications for better efficiencies. This article attempts to investigate the effect of a very simple design modification on the no‐load performance of a natural convection domestic solar dryer (NCDSD). A direct‐type domestic solar dryer has been developed with an air cavity surrounding the drying chamber. To compare the effect of air cavity, a domestic solar dryer without air cavity has also been developed and both the dryers were tested simultaneously under the climate of Hisar, India. The values of thermal efficiency were calculated along with convective heat transfer coefficient from absorber plate to the drying air. Both the dryers were also analyzed by developing finite element models in COMSOL multiphysics computer software. The no‐load thermal efficiency for the domestic solar dryer without and with air cavity was found to be 22.68% and 34.08%, respectively. The values of coefficient of correlation for modeled and actual drying tray temperatures for dryer without and with air cavity were 0.980466 and 0.9833917, respectively. The proposed finite element model would be helpful in the design and development of NCDSDs.

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Section: Theoretical Considerationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental and simulation studies on the no‐load performance assessment of a domestic solar dryer

Shimpy,

Kumar,

Kumar

2024

Heat Trans

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“…It reduces the moisture content of the food items up to a level (below 10% wet basis) where degradation of food by any microbial and fungal growth is not possible. The food's weight also gets reduced, allowing easy transportation for long distances (Kumar et al, 2016(Kumar et al, , 2019Malik et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Design and optimization of a domestic solar dryer: an analytical approach

Shimpy,

Kumar,

Kumar

2024

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PurposeFood loss and wastage is an issue of global concern and the household sector is one of the biggest contributors to this. Solar drying has been explored by many eminent researchers as a solution to this problem but there have been concerns about the lack in designs, higher cost, lower performance, and consumer acceptability. The present research aims to design a small-scale domestic solar dryer by using computer software.Design/methodology/approachResponse surface methodology (RSM) and computational fluid dynamics (CFD) are used to design the domestic solar dryer. Initially, design variables (inlet and outlet vent height) are identified and a design of experiments has been created using RSM for set of experimental runs. The experimental runs suggested by RSM were carried out using CFD simulation in COMSOL Multiphysics software and the results were used for optimization of response variables (outlet velocity and drying chamber temperature) in RSM.FindingsOutlet vent height was found to be most significantly affecting parameter to both the responses. The optimum values of inlet and outlet vent heights were 0.5 and 2.5 cm, respectively with the overall desirability of 0.728. The model accuracy was tested by conducting a confirmation test as post processing in design expert software.Originality/valueDesigning a solar dryer is a complex, costly and time consuming process, this study presents an easy, economic and fast method to design a new solar dryer. It would help researchers to design and develop new domestic as well as large size industrial solar dryer.

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“…The second way is using solar radiation to raise the temperature of a drying fluid separately and then using that heated fluid to evaporate moisture from the commodity placed in a well-insulated drying chamber. The third way combines both the direct and indirect ways of heat transfer and is called the mixed-mode type of solar drying [ 13 – 15 ]. The evaporated moisture from the drying commodity has to be removed from the drying system, and it can be done either by natural air currents due to the buoyancy effect known as “natural convection” or by some external source of air circulation such as a fan and blower known as “forced convection” [ 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Performance Assessment and Modeling Techniques for Domestic Solar Dryers

Shimpy

Kumar

2023

Food Eng Rev

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Solar dryers have always been criticized for their lower performances. There are numerous ways to define the performance of a solar drying system such as thermal performance, drying kinetics, environmental aspects, economic evaluations, and quality of the dried product. Different modeling techniques have also been developed to design and analyze solar dryers and drying processes. This article presents a systematic, comprehensive, and state-of-the-art overview of various performance indicators and modeling techniques used for the evaluation and analysis of solar dryers, especially domestic and low cost solar dryers. Environmental analysis has severe global implications, and product quality is one of the biggest concerns of consumers. But the environmental impact and product quality assessments for domestic solar dryers are observed to be rarely reported in the literature. The use of modeling techniques in solar drying has changed the way of analyzing any thermal system. Here, an attempt is made to establish an overall assessment criterion for domestic solar dryers and to give a one-stop solution for researchers and users around the world.

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Advancements in ginger drying technologies

Cited by 16 publications

References 92 publications

Experimental and simulation studies on the no‐load performance assessment of a domestic solar dryer

Experimental and simulation studies on the no‐load performance assessment of a domestic solar dryer

Design and optimization of a domestic solar dryer: an analytical approach

Performance Assessment and Modeling Techniques for Domestic Solar Dryers

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