Energy, economic analysis and mathematical modelling of mixed-mode solar drying of potato slices with thermal storage loaded V-groove collector: Application to Maghreb region

Lamrani, Bilal; Elmrabet, Yasmine; Mathew, Ibeh; Bekkioui, Naoual; Etim, Promise Joseph; Chahboun, A.; Draoui, Abdeslam; Ndukwu, Macmanus Chinenye

doi:10.1016/j.renene.2022.09.119

Cited by 21 publications

(8 citation statements)

References 37 publications

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“…The solar radiation intensity varied from 103 to 616 W/m 2 with an average value of 374.87 W/m 2 . The peak solar radiation value is lower than 1013 W/m 2 obtained by Lamrani et al [ 41 ] in Morocco but the average value is higher than 368.38 and 303.6 W/m 2 recorded by Ndukwu et al [ 31 , 42 ] respectively in this area. These showed that the study location is a low solar intensity area which most time results in a longer period of drying using the solar dryer when compared to areas like Morocco.…”

Section: Resultscontrasting

confidence: 54%

Drying kinetics and thermo-economic analysis of drying hot water blanched ginger rhizomes in a hybrid composite solar dryer with heat exchanger

Ndukwu¹,

Ben²,

Elijah³

et al. 2023

Heliyon

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Section: Resultscontrasting

confidence: 54%

Drying kinetics and thermo-economic analysis of drying hot water blanched ginger rhizomes in a hybrid composite solar dryer with heat exchanger

Ndukwu¹,

Ben²,

Elijah³

et al. 2023

Heliyon

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“…The energy input from solar the solar collector is calculated as follows (Ndukwu et al, 2017) 6 Uo is the heat loss coefficient(W/m 2 o C) deduced from Duffie and Beckman, (2006) as follows 7 F.R. is the heat removal factor given as follows (Lamrani et al, 2022) 8…”

Section: Energy Analysismentioning

confidence: 99%

Eco-thermal Analysis and Response Surface Optimization of the Drying Rate of Potato Slices in a Mix-Mode Solar Dryer

Onyenwigwe

Ndukwu

Abam

et al. 2023

Iran J Sci Technol Trans Mech Eng

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This research aims to establish the interconnectivity between mix-mode solar dryer designs with carbon and energy cost mitigation using different energy scenarios and study the drying kinetics to obtain the optimal drying rates for drying blanched potato s dryer fabricators and also assist them in making the right choice for carbon emission management for environmental sustainability and determining the end point of drying potato slices for energy conservation. Hence a mix mode solar dryer was deployed with sun-drying using blanched potato as a case study. The potato slices were spread on the drying tray to form a thin layer. Mass loss data and Temperature and relative humidity data were recorded at 1 h intervals until the desired moisture content was achieved. The dryer utilized 4.562 M J to dry the potato slices from 64 % w.b initial moisture content to 7.56 % w.b final moisture content. The percentage of the energy utilization ratio (EUR) ranged from 4.19 to 82.68 % with an average value of 39.46% while the thermal efficiency of the solar dry varied from 0.6 % to 34 % with an average value of 17 %. The dryer can save from$74.22 to $741.22 per year at a 10 to 100% rate of usage with an indicative payback period of 0.17 1.64 years at the same rate of usage. The decarbonisation potential of the solar dryer was high when compared to coal, diesel or grid electricity-powered dryers as an energy case scenario with the values ranging from 2.9 -237.71tones of CO2 per year with earned carbon credit ranging from $41.98 to $ 3446.85 per year. Blanching time affected the drying rate and effective moisture diffusivity of the potato slices with effective moisture diffusivity varying from 6.35 × 10 11 to 7.07 × 10 10 m 2 /s for sun-dried potato slices and 9.86 × 10 11 to 1.24 × 10 9 m 2 /s for solar drying potato slices. Using the solar dryer reduced the drying time by 25.81 to 34.48 % compared to open sun drying. The optimum drying rate for the solardried untreated potato slices was 0.0239665 kg/h at a collector temperature of 40.93 o C and thermal efficiency of 17.30 % while blanching for 3 minutes, 6 minutes and 9 minutes gave optimum drying rate of 0.0177959kg/h, collector temperature (T) of 40.9 o -treatments.

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“…The total time taken to dry the potato was 4 h with a collector efficiency of 60.08%. 12 Lin et al adopted a mathematical approach for a corrugated solar collector. It was reported that the average thermal efficiency of a solar air collector could reach up to 27.14 if the opening angle of 60°for the corrugated collector is used with a surface absorptance of 0.8.…”

Section: Introductionmentioning

confidence: 99%

“…Midilli–Kucuk model was adopted to predict the kinetics of potato drying in a mixed‐type dryer. The total time taken to dry the potato was 4 h with a collector efficiency of 60.08% 12 . Lin et al adopted a mathematical approach for a corrugated solar collector.…”

Section: Introductionmentioning

confidence: 99%

“…22 Singh et al provided valuable insight into the recent development in the artificial roughened surface of the absorber plate, the flow pattern of the medium, and the scope of multi-passes in the solar air collector. 23 After reviewing, [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] it was seen that the mathematical models are the energy equations that are solved using the computation software. A new approach was not seen except in the study by Gopi et al 17 In this article, a unique approach was adopted that is based on nonlinear system identification without using rudimentary algebra or statistical models.…”

Section: Introductionmentioning

confidence: 99%

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Developing a thermodynamic model for the circulating air using an opaque system

Dhaundiyal,

Toth

2023

Energy Science & Engineering

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The paper focuses on energy modelling that involves a concatenated structure of a linear time‐invariant system. A block‐structured (BS) technique was adopted for a nonlinear system identification. Using the superimposition principle, the model mapped the thermodynamic state variables as an indirect function of time to the output function. The available energy and degradation of solar radiation are determined through a black box model. For testing and validation purposes, a solar collector with recirculating air was considered. The basic principle is to establish a relation between state variables and the performance parameters, without invoking the conventional thermodynamic relationship between them. The output of the model was compared with the validation data to ensure whether or not there was any affinity between them. The sigmoidal, wavenet, and polynomial forms of nonlinearity provided a good fit to the experimental dataset. The mean absolute percentage error encountered while estimating the collector efficiency was noticed to vary from −4.85 × 10−03% to 1.22 × 10−03%. Similarly, it falls in the domain of −4.73 × 10−04% to 7.78 × 10−02% for the second law efficiency. The maximum heat loss rate (BS model) obtained across the first and second passages of the solar air collector was 235.41 and 218.19 W at the air mass flow rate of 8.10 g/s, which is congruent to the validation dataset.

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Energy, economic analysis and mathematical modelling of mixed-mode solar drying of potato slices with thermal storage loaded V-groove collector: Application to Maghreb region

Cited by 21 publications

References 37 publications

Drying kinetics and thermo-economic analysis of drying hot water blanched ginger rhizomes in a hybrid composite solar dryer with heat exchanger

Drying kinetics and thermo-economic analysis of drying hot water blanched ginger rhizomes in a hybrid composite solar dryer with heat exchanger

Eco-thermal Analysis and Response Surface Optimization of the Drying Rate of Potato Slices in a Mix-Mode Solar Dryer

Developing a thermodynamic model for the circulating air using an opaque system

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