Computational fluid dynamics analysis of cabinet‐type solar dryer

Chaudhari, Vishal D.; Kulkarni, Govind N.; Sewatkar, C. M.

doi:10.1111/jfpe.13756

Cited by 4 publications

(4 citation statements)

References 16 publications

(24 reference statements)

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“…Computational fluid dynamics (CFD) has emerged as one of the most viable tool to design and analyze any system before its actual fabrication. It has been widely used for analyzing different solar drying system such as solar fruit cabinet dryer (Amanlou and Zomorodian, 2010), solar conduction dryer (Chavan et al, 2020), hybrid solar dryer (Yunus and Al-Kayiem, 2013) and cabinet-type solar dryer (Chaudhari et al, 2021). The application of CFD and other simulation techniques for solar dryers have also been reviewed by many researchers (Jha and Tripathy, 2021;Malik and Kumar, 2022;Milczarek and Alleyne, 2017;Prakash et al, 2016Prakash et al, , 2017.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Introductionmentioning

confidence: 99%

“…It has been widely used for analyzing different solar drying system such as solar fruit cabinet dryer (Amanlou and Zomorodian, 2010), solar conduction dryer (Chavan et al. , 2020), hybrid solar dryer (Yunus and Al-Kayiem, 2013) and cabinet-type solar dryer (Chaudhari et al. , 2021).…”

Section: Introductionmentioning

confidence: 99%

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

Shimpy,

Kumar,

Kumar

2024

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“…They have performed simulations considering many parameters such as air flow rate, temperature, and pressure to obtain energy efficient grain dryer. Chaudhari et al (2021) have done a CFD analysis of a cabinet‐type solar dryer using an auxiliary heater. The simulation has been carried out at a drying temperature of 318 K. Variation of geometry, temperature distribution, and solar radiation has been studied by finding common regions inside the drying chamber.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermal performance of a hybrid solar dryer through experimental and CFD investigation

Behera

Mohanty

2023

J Food Process Engineering

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Solar drying comes under clean energy technology that aims to dry food products hygienically. The present work discusses the development of an energy‐efficient and cost‐effective hybrid‐type solar dryer for drying 15 kg of food products. Experiments and CFD modeling of the solar drying system have been carried out for drying tomato slices. The maximum efficiency of the collector has been obtained as 74.1% and 66.96%, respectively with and without using exhaust hot air recirculation. Performance indicators such as convective heat transfer coefficient, overall loss coefficient, drying efficiency, and collector efficiency factor have been obtained as 7.743685 W/m2°C, 5.94189 W/m2°C, 32.89%, and 0.987%, respectively. The coefficient of determination (R2) is calculated as 0.9863, 0.9919, and 0.9755 for the first, second, and third day, respectively, representing a higher order of fit of getting a performance evaluation of the collector. A p‐value is obtained as 0.49375 (>0.05) from a paired sample t‐test signifying no statistical significance difference between the predicted and actual experimental results of collector efficiency. For a constant mass flow rate of air, the maximum temperature inside the drying chamber and wall radiative heat flux obtained from experiments and CFD simulation are in good agreement, thus satisfying the validation. Further, the dryer can be used during the night time by using an electric coil producing a satisfactory drying effect. It is lightweight and easily portable to capture maximum solar radiation. Practical applications The present solar dryer is most suitable for drying applications in food processing industries due to the clean and hygienic process of drying. It is easily portable to any location to capture maximum solar radiation. It is lightweight and has low construction, and maintenance costs. It is the most efficient and fast drying compared to open sun drying and can be used for large‐scale drying in industrial applications. The present study is about CFD simulations of the solar dryers for drying 5 kg of tomato slices. The drying efficiency has been increased by utilizing exhaust hot air circulation. Both the simulation and experimental results have been validated and further dryer has been used during night time by using an auxiliary heating element.

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