Mushroom dehydration in a hybrid-solar dryer

Reyes, Antonio; Mahn, Andrea; Cubillos, Francisco; Huenulaf, Pedro

doi:10.1016/j.enconman.2013.01.032

Cited by 56 publications

(24 citation statements)

References 20 publications

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“…Different designs of solar dryers for food products have been studied and optimized by authors of many research works (Amer, Hossain, & Gottschalk, ; El‐Sebaii & Shalaby, ; Reyes, Mahn, Cubillos, & Huenulaf, ; Sevik, ; Shalaby & Bek, ; Sharma et al, ).…”

Section: Introductionmentioning

confidence: 99%

Solar drying process to obtain high standard “deglet‐nour” date fruit

Mennouche

Boubekri

Chouicha

et al. 2017

J Food Process Engineering

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The present work aims to improve the quality of Algerian Deglet‐Nour dates using an indirect solar drying technique preceded by hot water pretreatment. The final product quality was evaluated by three simultaneous testing parameters: microbiological degradation, sugar composition and color change. Convective solar drying experiments were firstly performed with a variable mode at an average temperature ranging between 39‐55°C. Four other experiments were conducted in constant mode under regulated temperatures (50°C, 55°C, 60°C and 65°C). The results of drying tests, led towards the choice of the treatment under controlled air temperature of 50°C with air flow of 1.2m/s. Resulting drying time of 8 hours presents the advantage of to discard the night conservation problems by ensuring a continuous drying process. Owing to its low cost and green energy use, this study could offer a practical alternative to the conventional means currently used in industrial applications of postharvest heat treatments of dates. Practical applications Drying of naturally high humid dates and the rehydrated dry dates by direct exposure to the sun, is an old method for valorization the “Deglet‐Nour” dates. Considerable losses occur during this drying process so the food quality can be seriously degraded. For an industrial application with improvement the quality of dried product, the natural sun drying should be replaced by the indirect solar drying means. This article aims to improve the quality of Deglet‐Nour dates using an indirect solar drying technique preceded by adequate water steeping pretreatment. The results of the study will be useful in the sense of ensuring an added value by enhancing the product quality and avoid eventual problems induced by night storing of treated products. The obtained results also could offer a practical alternative to the conventional means currently used in industrial applications for post‐harvest heat treatment of Deglet‐Nour dates.

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Section: Introductionmentioning

confidence: 99%

Solar drying process to obtain high standard “deglet‐nour” date fruit

Mennouche

Boubekri

Chouicha

et al. 2017

J Food Process Engineering

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“…Also, the drying time has been reduced by the addition of heat storage systems which allow continuing the drying process during the night [24,25]. In other cases, some devices were coupled with additional heat sources, such as burners or electric heaters which were powered by photovoltaic or connected to the grid where available [26][27][28]. Despite the performance of the driers in all these cases being improved, the increase of final cost and their complexity makes them financially unaffordable or sometimes unpractical from the operational and maintenance point of view.…”

Section: Introductionmentioning

confidence: 99%

Improved Agricultural Products Drying Through a Novel Double Collector Solar Device

et al. 2019

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Backyard agricultural systems are frequently used for food production in rural tropical regions all over the world. The implementation of these systems has been used as a strategy to increase food security, to preserve the phyto and zoo diversity and to provide an alternative income for poorer rural families. Nevertheless, the absence of appropriate preservation mechanisms and nonrenewable energies can lead to significant production losses that could be prevented by the implementation of solar drying devices. The objective of this project was to design, build and validate a double collector solar device for improved drying performance. To evaluate the double collector solar device, four backyard products frequently used in the Mexico Southwest regional diet were used: carrots, chayote squash, tomatoes, and oyster mushrooms. The results showed that the solar device achieved drying efficiencies between 22.8 and 37.9% by reaching moisture values below the 12.30% threshold, which according to the international standards is considered as “Low Moisture Food”. The evaluation of the double collector solar drier is demonstrated to be an easy-to-apply and environmentally friendly method for food preservation in tropical rural regions by taking advantage of domestic renewable energy resources.

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“…A typical active solar dryer depends solely on solar energy as the heat source but employs motorized fans and/or pumps for forced circulation of the hot air through the drying chamber. The forced air circulation will get a higher efficiency compared to the natural cycle one, and the electric power requirement of the fan is very low and can be operated by one photovoltaic module independent of the electric grid [9][10][11].Solar air heater is the basic component of the active solar dryer, and the performance of solar drying system strongly depends on the performance of solar air heater [12], and there are several type of solar air heater had used in the solar dryers in the past researches [13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of a Solar Dryer System for Drying Carpet

Yuan

Hong

et al. 2015

Energy Procedia

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The work presents a solar dryer system for carpet drying. A flat plate solar air heater was designed for the large scale industry drying process. The thermal performance of the designed collector was tested based on the ANSI/ASHRAE Standard 93-2010, and the test results show that the instantaneous efficiency and heat loss coefficient base on gross area and mean temperature of heat transfer fluid is 0.77 and 5.62W/(m 2 ·k) respectively. Then, a solar dryer system was designed and constructed for carpet drying, which composed of a 56 m 2 solar air heater field, a dryer cabinet and others subsystems. Performance of the drying system was tested and analyzed, and the test results show that more than 320kg wet wool and carpet could be dried in 7.5 hours, when the average intensity of solar irradiation got to 800 W/m 2 .

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Mushroom dehydration in a hybrid-solar dryer

Cited by 56 publications

References 20 publications

Solar drying process to obtain high standard “deglet‐nour” date fruit

Solar drying process to obtain high standard “deglet‐nour” date fruit

Improved Agricultural Products Drying Through a Novel Double Collector Solar Device

Experimental Investigation of a Solar Dryer System for Drying Carpet

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