An Experimental Study of Vegetable Solar Drying Systems with and without Auxiliary Heat

Khalifa, Abdul Jabbar N.; Al-Dabagh, Amer M.; Al-Mehemdi, W. M.

doi:10.5402/2012/789324

Cited by 23 publications

(11 citation statements)

References 6 publications

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“…Numerous studies [6,16,25,26,30,[55][56][57][58][59][60][61][62][63][64][65][66][67][68][69][70][71][72][73] analyzed and reviewed various solar drying types, their drying periods and efficiencies related to drying of fruits, vegetables, agricultural and marine products, biomass and solid wastes, etc. Among them, Pawale et al [73] proposed a potential design about hybrid MSW solar dryer with the solar absorber plate assembly and the electrical supplied heating coil as an external energy source.…”

Section: Solar Dryingmentioning

confidence: 99%

Drying methods for municipal solid waste quality improvement in the developed and developing countries: A review

Tun

Juchelková

2018

Environmental Engineering Research

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Nowadays, drying methods for municipal solid waste quality improvement have been adopted in the developed and developing countries to valorize wastes for a renewable energy source, reduce dependency on fossil fuel and keep safer disposal at landfills. Among them, biodrying, biostabilization, thermal drying and solar drying are the most common. Drying of municipal solid waste could offer several environmental and economic benefits. Therefore, this review highlighted the drying methods for municipal solid waste quality improvement around the world and compared them based on the reduction of moisture, weight and volume of municipal solid wastes against drying temperature and time by using statistical analysis. It was observed that the drying temperature of different drying methods accounted for 115 ± 40°C for thermal drying, 59 ± 37°C for solar drying, 55 ± 15°C for biodrying and 58 ± 11°C for biostabilization. Among the drying methods, thermal drying provided the shortest drying time. The moisture reduction, weight reduction, volume reduction and heating value increase of municipal solid waste could vary with drying temperature and time. Finally, the benefits and drawbacks of different drying methods were specified, and recommendations were made for the future efficient drying.

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Section: Solar Dryingmentioning

confidence: 99%

Drying methods for municipal solid waste quality improvement in the developed and developing countries: A review

Tun

Juchelková

2018

Environmental Engineering Research

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“…In this study, paraffin wax in mixed-mode dryer was used to increase the duration of solar energy storage. Mixed-mode drying system efficiency was 25% to 40% higher than simple solar drying systems [37]. Several studies have been conducted on the use of paraffin to improve solar drying efficiency [38,39].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of free water removal from different sludge by solar energy utilization

Amin

Salihoğlu

2020

Environmental Engineering Research

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The purpose of this research was to provide basic information about the conditions required for the drying of three types of sludge to reduce the problems associated with sludge disposal. By designing an integrated drying system, as a simple technology with paraffin-wax (phase change material), the drying efficiency was investigated with few possibilities for waste sludge management. According to the study by providing 1,880 Wh/m 2 , 1,671 Wh/m 2 , and 2,051 Wh/m 2 cumulative solar radiation, within 7 h. respectively for wastewater treatment plant sludge (WWTPs.) and paint sludge, free water was released and marble sludge dried completely. The average internal temperature and moisture are the main factors for minimizing the sludge mass and volume and the heat transfer rout between the solar dryer equipment was observed. Water removal from the sludge caused the porous structure of the WWTPs. and paint sludge surface was observed using scanning electron microscopy (SEM). According to statistical analysis the goodness of the curve fit was evaluated using the R-square and root mean square error (RMSE) for all three sludge types. By solar drying a large volume of sludge water was removed for easy transporting and prepared for the subsequent waste disposal operation.

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“…Another work studies an experimental study was conducted to investigate the performance of a solely solar drying system and a system equipped with an auxiliary heater as a supplement to the solar heat, [2]. The performances of both are compared to that of natural drying.…”

Section: Introductionmentioning

confidence: 99%

Mathematical Modeling of Drying of Mint in a Forced Convective Dryer Based on Important Parameters

Chabane¹,

Adouane²,

Moummi³

et al. 2019

IJHT

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Thin layer drying of mint was evaluated using a solar dryer at the university of Biskra. The experimental moisture ratios of the samples were fitted to eight drying models. The drying experiments were carried out on the mint with effect the mass flow rate, which varies from 0.018 to 0.034 kg.s -1 . In this part of the study, we cut the mint to virtual median little pieces. The mathematical models were tested with the drying behavior of mint in the laboratory solar dryer. The coefficients of the models were determined by the multiple regression method in the solar dryer to find out the most suitable moisture ratio model. We conclude that the mass flow rate influence onto the coefficients of correlation it's meaning the mass flow it is an important factor. The our model was found as the best model based on statistical parameters of R², RMSE and χ². The model is applicable to predict the moisture content of mint during solar drying of mint.

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An Experimental Study of Vegetable Solar Drying Systems with and without Auxiliary Heat

Cited by 23 publications

References 6 publications

Drying methods for municipal solid waste quality improvement in the developed and developing countries: A review

Drying methods for municipal solid waste quality improvement in the developed and developing countries: A review

Evaluation of free water removal from different sludge by solar energy utilization

Mathematical Modeling of Drying of Mint in a Forced Convective Dryer Based on Important Parameters

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