A review of solar drying technologies

VijayaVenkataRaman, S.; Iniyan, S.; Goić, Ranko

doi:10.1016/j.rser.2012.01.007

Cited by 265 publications

(81 citation statements)

References 174 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It consists of one cover, double channel design with double air flows between the cover and the absorber plate and between the absorber and the bottom plates. Many papers have investigated this design (Yeh et al, 1999;Njomo, 1998;VijayaVenkataRaman et al, 2012). Jha et al (1992) obtained the energy balanced equations in partial differential forms, which govern the behaviour of the system, by considering energy conversation on each component of the system separately.…”

Section: Parallel-pass Solar Air Heatermentioning

confidence: 99%

Thermal performance modelling of solar collector with heat storage

Tchaya

Kampel

Havet

et al. 2017

IJESMS

View full text Add to dashboard Cite

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.

show abstract

Section: Parallel-pass Solar Air Heatermentioning

confidence: 99%

Thermal performance modelling of solar collector with heat storage

Tchaya

Kampel

Havet

et al. 2017

IJESMS

View full text Add to dashboard Cite

show abstract

“…Drying kinetics of wastes in olive oil industry has been studied by several researchers, by using fluidized beds [9], convective dryers [10], microwave-convective dryers [11] and solar dryers of different kinds (passive, active and hybrid) [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Solar Dryer Application for Olive Oil Mill Wastes

et al. 2015

View full text Add to dashboard Cite

Global waste production has raised recently due to numerous agricultural and industrial activities. Among other actions devoted to waste reduction, revaluation seems to be the most advantageous one from an environmental and economic point of view. In the olive oil sector, by-product management (namely olive pomace, olive mill wastewater, and sludge residue) poses serious problems for companies, with the energy use of these wastes being a feasible option to solve these problems. Due to their high moisture content, drying constitutes the main stage for a possible bio-fuel conversion. This research work deals with the analysis of drying for the three main wastes from olive oil by using a prototype dryer. This equipment has different working regimes depending on the kind of convection (natural or forced for passive and active mode, respectively), the incidence of solar radiation on the product (indirect or mixed type) and the use of an additional system for energy supply (hybrid type). From the results, it could be said that all the wastes were suitable for solar drying. However, drying conditions were different for each case. Olive pomace and olive mill wastewater showed promising results for solar drying application in mixed active mode. Concerning sludge residue, its special physical structure could employ the use of turners for drying, in order to improve heat transfer to the product. Moreover, hybrid active mode enabled a considerable reduction in drying time, being an aspect to take into account for its use during low solar radiation or at night time.

show abstract

“…Over the years, the drying is performed by various methods: by convection of preheated air (Karathanos & Belessiotis, 1997;Toǧrul & Pehlivan, 2004) direct solar drying (Yaldiz & Ertekin, 2001;Doymaz, 2005;Vijaya Venkata Raman et al, 2012), drying by irradiation (Rodríguez et al, 2005;Zhang et al, 2006;Bilbao-Sàinz et al, 2006;Giri & Prasad, 2007), by freeze-drying (Graciela et al, 1993;Burgschweiger & Tsotsas, 2002;Kettner et al, 2006), under fluidized bed (Soponronnarit et al, 1997;Kannan & Subramanian, 1998;Syahrul et al, 2002), by osmotic dehydration (Raoult-Wack, 1994;Simal et al, 1997;Della Rosa & Giroux, 2001;Ozen et al, 2002;Mišljenović et al, 2012), etc. Currently, through continuous improvement, the thermal drying is one of the industrial operations that consume the most energy and the dehydration process is significant in the worldwide energy industry.…”

Section: Introductionmentioning

confidence: 99%

Drying of Gelidium sesquipedale (Rhodophyta) Under Microwave Irradiation: Study of Thermal and Kinetic Aspects of the Drying Process

Hnini¹,

Benchanâa²,

Hammioui³

2014

IJC

View full text Add to dashboard Cite

Microwave technology is currently very interesting because it offers, in many industrial processes, a new alternative energy for drying and treatment of various materials. In this context, the drying of the Gelidium sesquipedale (Rhodophyta), which is a red algae, is carried out under microwave irradiation in the aim to optimize the energy consumption in the drying process and the quality of the extracted products. The drying process of Gelidium sesquipedale under microwave irradiation is carried out by studying the thermal and kinetic aspects of drying under different irradiation conditions. The experiments were performed on samples of different initial masses ranging from 2 to 30 g. The samples are irradiated in an experimental device combining a gravimetric balance and microwave assembly that may impose different power microwave ranging from 50 to 200 W.The analysis of the experimental curves of the drying process shows that the initial mass of the sample has little influence and the applied microwave power has a significant effect on the drying kinetics. The comparative study of the drying of Gelidium sesquipedale by conventional heating and under electromagnetic field shows that the controlling kinetic mechanism depends on the way in which the sample is dried. The action of the electromagnetic field allows faster heat transfer leading to the rapid evacuation of water molecules from the seaweed.

show abstract

A review of solar drying technologies

Cited by 265 publications

References 174 publications

Thermal performance modelling of solar collector with heat storage

Thermal performance modelling of solar collector with heat storage

Solar Dryer Application for Olive Oil Mill Wastes

Drying of Gelidium sesquipedale (Rhodophyta) Under Microwave Irradiation: Study of Thermal and Kinetic Aspects of the Drying Process

Contact Info

Product

Resources

About