Solar drying

Belessiotis, V.; Delyannis, Euridike-Emmy

doi:10.1016/j.solener.2009.10.001

Cited by 290 publications

(128 citation statements)

References 103 publications

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“…5) and the calculated (equation 5), we can see that the results coincide with great accuracy. This is shown by the regression equation coincidence with the theoretical calculation equation (4). The coefficient of determination is R 2 = 0.989 (Fig.…”

Section: Resultssupporting

confidence: 71%

“…There are also many types of solar greenhouse dryers studied by several authors. Effective drying is accomplished with a combination of heat and air movement [4]. The air flow and temperature of solar greenhouse dryers could be set to suggestible temperature range also for vermicompost drying.…”

Section: Introductionmentioning

confidence: 99%

“…The air flow and temperature of solar greenhouse dryers could be set to suggestible temperature range also for vermicompost drying. For some product drying process direct sunlight is not recommended [4]. It could be very important also for vermicompost drying to save its biological texture.…”

Section: Introductionmentioning

confidence: 99%

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Experimental study of vermicompost drying process

Kakitis

Vronskis

Nulle

2017

Engineering for Rural Development

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Abstract. Biohumus is widely used for various vegetable productions. However, its use is difficult in places such as recreation, sports, golf, and football fields. Humus uneven distribution across the field promotes grass growth at different speeds. The result is not acceptable. Therefore, to develop vermicomposting end product usability work is needed in several directions. One of the directions is to develop the possibility of humus evenly spreading across the field. It can be done developing new or improving the existing technologies, which allow doing it with minimal impact on product quality. Granular vermicompost can be called concentrated fertilizer, because the recycling process reduces the volume of material more than 10 times, due to water removal and material thickening while extruding. It is therefore necessary to examine the humus moisture content and determine the energy needed for drying it. Given that vermicompost is a biologically active material, the drying must be carried out at the lowest possible temperature. It is not recommended to increase the drying temperature above 35 ºC. The aim of this research is to determine the drying rates of vermicompost in different temperatures of the drying agent and avoid overdrying. The drying rate is defined as the variation of the moisture content with respect to the time. The studies showed that the maximum of the drying speed was observed at the beginning of the process and reached 0.86 %·min -1 in the drying temperature 64 ºC. Decreasing of the drying temperature decreases the drying speed to 0.59 %·min -1 .

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Section: Resultssupporting

confidence: 71%

Section: Introductionmentioning

confidence: 99%

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Experimental study of vermicompost drying process

Kakitis

Vronskis

Nulle

2017

Engineering for Rural Development

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“…Two basic moisture transfer mechanisms are involved in drying: migration of moisture from the mass inside to the surface and transfer of the moisture from the surface to the surrounding air, in the form of water vapor. Drying by solar radiation can be divided into direct, or open-air sun drying, the direct exposure to the sun and indirect solar drying or convective solar drying, (Belessiotis and Delyannis, 2011;Leon et al 2002). Selecting the perfect conditions for drying is not easy as the food materials are very sensitive and their color, flavor, texture or nutritional value should not be seriously affected.…”

Section: Drying Of Cropsmentioning

confidence: 99%

Application of Solar Energy in the Processes of Gas, Water and Soil Treatment

Pawłat¹,

Stryczewska²

2012

Solar Power

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“…Based on the mode of operation, the dryer is either designed as a direct, an indirect, or a mixed-mode dryer (Belessiotis and Delyannis, 2011;El-Sebaii and Shalaby, 2012). A direct-mode dryer has no preheating device to condition the drying air before entry into the drying chamber.…”

Section: Introductionmentioning

confidence: 99%

Thermal performance modelling of solar collector with heat storage

Tchaya

Kampel

Havet

et al. 2017

IJESMS

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Solar drying is used to reduce post-harvest losses. An indirect solar dryer with oriented air is presented. It provides the ability to store energy. This work predicts the outlet temperature at the collector in the single-face and bifacial modes of collector. The heat balance applied to each element is determined taking into account the temporal term which characterises storage in the material. The simulation is done using Matlab software. Both models of the collector are validated by comparing the experimental and theoretical curves. The results show that the two curves of outlet temperatures have the same profile when the global heat transfer coefficient loss is 2.94 W.m -2 .K -1 , the contact resistance between the absorber and the insulator is 0.025 W -1 .m2.K and the velocity is 0.2 m.s -1 . The contact resistance has a significant influence on the outlet air temperature but not accessible for controlling temperature compared to the velocity. G.B. Tchaya et al.Martin Kamta is an Associate Professor in Electronics at the University of Ngaoundere. His main range of scientific interests is physics of semiconductor devices, electronics and photovoltaic systems. He has published three articles in electron spin resonance (ESR) of defects in III-V materials, three articles in superconducting materials, one article and six communications about photovoltaic systems. He has supervised several PhD, several Master's degree theses and several Master engineering.Michel Havet received his Doctorate in Aerodynamics, Fluid Mechanics, Combustion and Thermal from the University of Poitiers in 1995. He is currently in charge of Food Process Engineering Department at ONIRIS, France. His research activities concern the aerodynamics and increased transfers in food processing. He has published close to 25 papers in refereed journals and has supervised several Masters and PhD theses.César Kapseu is a Professor of Process Engineering at the University of Ngaoundere. He has published close to 100 papers in refereed journals and is a holder of more than ten prestigious awards. He has supervised several Masters and PhD theses. He has equally held several posts of responsibilities at the University of Ngaoundere.

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Solar drying

Cited by 290 publications

References 103 publications

Experimental study of vermicompost drying process

Experimental study of vermicompost drying process

Application of Solar Energy in the Processes of Gas, Water and Soil Treatment

Thermal performance modelling of solar collector with heat storage

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