Thermal energy storage based solar drying systems: A review

Kant, Karunesh; Shukla, Amritanshu; Sharma, Atul; Kumar, Anil; Jain, Anand

doi:10.1016/j.ifset.2016.01.007

Cited by 156 publications

(45 citation statements)

References 60 publications

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“…The equilibrium moisture content (EMC) is determined for DDS and CDS by using Equation (6). Figure 4 presents the drying of wheat grains from initial moisture content 26% (dry basis) to equilibrium moisture content at different drying air temperatures varying from 50°C to 60°C.…”

Section: Resultsmentioning

confidence: 99%

“…greenhouses [3] and agricultural product storage [4] . Certainly, desiccants possess the drying potential that can be used for various agricultural products, and consequently many studies have been reported in the literature [1,[5][6][7] . In desiccant based drying system (DDS), the desiccant unit handles the latent load of drying air whereas heater is used for sensible heating of drying air to access the minimum vapor pressure.…”

Section: Introduction mentioning

confidence: 99%

“…It is noteworthy that the specific heat capacity and density of moist air is calculated from literature [54]. In addition, mechanical energy consumed by the system is the sum of mechanical energy used for the handling and associated processes [53] : [6][7] (17) where, ΔP is pressure drop, kPa; t is drying time, s; A bin is drying bin area, m 2 ; A ads and A reg are areas, m 2 , of the desiccant wheel at adsorption and regeneration sides, respectively; V in is air velocity, m/s, at drying bin inlet whereas V ads and V reg are the air velocities, m/s, of the desiccant wheel at adsorption and regeneration sides, respectively.…”

mentioning

confidence: 99%

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Investigation of energy-efficient solid desiccant system for wheat drying

Hanif

Sultan

Miyazaki³

et al. 2019

International Journal of Agricultural and Biological Engineering

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The study investigates the applicability of solid desiccant system for drying of freshly harvested wheat grains in order to reduce the moisture content to an optimum level. Fast and low-temperature drying systems are required by today's drying industries in order to provide economical and safe drying. Therefore, comparison of desiccant drying has been made with the conventional method in terms of drying kinetics, allowable time for safe storage, the total time for drying cycle, and overall energy consumption. It has been found that the air conditions of proposed desiccant drying system provides a high drying rate and longer allowable storage time for safe drying. As the desiccants possess water adsorbing ability by means of vapor pressure deficit, therefore, the desiccant system successfully provides low-temperature drying which ensures the quality of wheat grains. Overall energy consumption is estimated for both conventional hot air drying and desiccant drying system. It has been found that the desiccant system requires less energy as drying is accomplished at minimum level of air flow and within allowable storage time.In addition, the overall performance index of the desiccant system is higher at all temperatures. The study is useful for developing a low-cost and sustainable drying technology for various agricultural products.

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Section: Resultsmentioning

confidence: 99%

Section: Introduction mentioning

confidence: 99%

mentioning

confidence: 99%

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Investigation of energy-efficient solid desiccant system for wheat drying

Hanif

Sultan

Miyazaki³

et al. 2019

International Journal of Agricultural and Biological Engineering

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“…The heat change and temperature diagram for sensible and latent heat are presented in Figure 7. 48 The comparison of the basic working principle between the two methods is shown in Figure 8. 49,50…”

Section: Latent Heat Storagementioning

confidence: 99%

Recapitulation on latent heat hybrid buildings

2019

Self Cite

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Summary In the existent paper, the performance of thermal storage hybrid buildings exploiting the latent heat of phase change materials (PCMs) for thermal refrigeration and heating of the contemporary period has been investigated. The conventional buildings consume a large amount of electricity, primarily for the heating and cooling applications. Electricity generation primarily relies on coal‐based thermal power plants. The emissions from these establishments pose a serious threat to the environment. Moreover, conventional heating/cooling units rely on exorbitant energy cost. The usage of any kind of thermal storage system is an efficacious way of stockpiling thermal energy and utilizing it when needed. This paper gives a comprehensive overview of the available thermal storage units incorporating PCMs. The various segments of the buildings, viz, ceiling, window, wall, and floor have been analyzed in details. The results are quite promising in terms of load reduction and overall energy saving. Indoor surface temperature reduction of up to 7oC has been achieved. The energy saving of up to 40% can be realized by employing PCM. A comprehensive list of the PCMs is also tried to build up for end users according to their temperature requirement.

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“…Plums are widely consumed both fresh and after processing, and the production of dried plums, for example, creates job opportunities. Solar drying could be a possible solution for the dehydration of food and agricultural products (Kant et al 2016;Samimi 2016). The main concern of farmers relating to the solar drying method is the long drying process and the low quality of the dried product.…”

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confidence: 99%

Comparative quality assessment of different drying procedures for plum fruits (Prunus domestica L.)

Akhijahani¹,

Arabhosseini²,

Kianmehr³

2017

Czech J. Food Sci.

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Different drying methods for plum fruits were compared in this case study. Samples were dried at a temperature of 70°C using the method of hot air drying as well using hybrid solar drying at three levels of air velocity (0.5, 1, and 2 m/s) and open sun drying. The dried samples were then compared on the basis of changes in colour, shrinkage and rehydration. The effect of air velocity on colour change was significant (P < 0.05) at the three different levels (0.5, 1, and 2 m/s), whereas effects on shrinkage and rehydration ratio were not significant (P < 0.05). The best conditions for plum drying with respect to values of colour change, shrinkage, rehydration ratio and the drying costs were obtained for the plums dried using a hybrid solar dryer at an air velocity of 1 m/s.

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Thermal energy storage based solar drying systems: A review

Cited by 156 publications

References 60 publications

Investigation of energy-efficient solid desiccant system for wheat drying

Investigation of energy-efficient solid desiccant system for wheat drying

Recapitulation on latent heat hybrid buildings

Comparative quality assessment of different drying procedures for plum fruits (Prunus domestica L.)

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