Thermal modeling and experimental validation of solar tunnel dryer: a clean energy option for drying surgical cotton

Panwar, N. L.; Kaushik, S.C.; Kothari, Surendra

doi:10.1093/ijlct/ctt053

Cited by 13 publications

(12 citation statements)

References 24 publications

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“…Therefore, the general form of exergy efficiency is expressed as follows: Table 3 Performances of SDSs for chili as reported by different authors. Given a greenhouse tunnel-type SDS with a chimney that uses solar radiation energy, system efficiency is given by [71]:…”

Section: Exergy Analysismentioning

confidence: 99%

Review of solar drying systems with air based solar collectors in Malaysia

Fudholi

Sopian

Bakhtyar

et al. 2015

Renewable and Sustainable Energy Reviews

127

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Section: Exergy Analysismentioning

confidence: 99%

Review of solar drying systems with air based solar collectors in Malaysia

Fudholi

Sopian

Bakhtyar

et al. 2015

Renewable and Sustainable Energy Reviews

127

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“…The greenhouse is not limited to drying of agro products but also used for drying non-agro products like cotton, sludge, paper, rubber etc. [29][30][31][32]. The greenhouse operates usually in either active or passive modes.…”

Section: Introductionmentioning

confidence: 99%

“…as compared to drying under the open sun [21,40]. Various researches had taken place to improve the efficiency of greenhouse dryers like insulating north wall [29,30,[41][42][43], using mirrors for reflecting infrared radiations [44], using thermal storage material in floor [10,29,32,45,46], etc. The hybrid dryers are also a step towards the use of solar energy in a more effective manner and improving the productivity of greenhouses.…”

Section: Introductionmentioning

confidence: 99%

A review on thermal analysis of hybrid greenhouse solar dryer (HGSD)

Singh

Gaur

2022

Journal of Thermal Engineering

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The objective of the paper is to present the modifications done in hy brid gr eenhouse solar dryers to make them more efficient. As hy brid dryers we re developed to ov ercome the various limitations of other types of solar dryers. Due to modifications in dryers, the effect on various heat transfer parameters like heat transfer coefficient, drying time, drying efficiency, etc. is studied and also encapsulated in the paper. It is found that in most of the hybrid dryers, the maximum temperature of the drying chamber is around 65-80°C. This shows the suitability of a hybrid dryer for drying high moisture crops. Also, the drying time for most of the crops is around 2-3 days, which shows the faster moisture removal rate inside the hybrid dryers. According to the literature studied, the maximum drying efficiency of a hybrid dryer is reported by about 35%. The paper also encapsulates the various relations/ equations used by different researchers to carry out the thermal modeling and heat transfer analysis of greenhouse dryers.

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“…The time of drying pepper in the greenhouse is shorter [9]. Panwar [10] designed a dryer that could dry 600 kilograms of cotton in a day, reducing the water content from 40% to 5%.…”

Section: Introductionmentioning

confidence: 99%

Influence of drying methods on quality of Zanthoxylum armatum DC. and mathematical modelling of the drying kinetics

et al. 2021

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In order to evaluate different drying methods on the quality of Zanthoxylum armatum DC and the change of moisture content of Z armatum during the drying process, the quality change was analyzed under three drying methods: Greenhouse drying equipment, Hot-air drying and Open sun-drying. The moisture loss was systematically recorded, converted to moisture ratio, and fitted to four semi-theoretical drying mathematical models: Lewis, Page, Henderson and Pabis, Avhad and Marchetti models. Comparisons of model fitness were using the coefficient of determination (R2), root mean square error (RMSE), mean bias error (MBE) and absolute error (MAE). The results showed that the color of Z armatum obtained by the greenhouse drying equipment was bluish green, which was significantly different from the other two drying methods (p<0.05). The numb degree difference of Z armatum obtained by the three methods was not significant(p>0.05). The opening rate is better in greenhouse drying equipment and hot air 40°C drying. The content of linalool can reach 45.5738~55.3898% of the volatile oil. The drying mathematical models fitting results showed that Avhad and Marchetti models fitted best, and the R2 of the curve ranged from 0.9677 to 0.9967, which could accurately predict the change trend of moisture ratio of Z armatum in three drying methods with drying time.

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Thermal modeling and experimental validation of solar tunnel dryer: a clean energy option for drying surgical cotton

Cited by 13 publications

References 24 publications

Review of solar drying systems with air based solar collectors in Malaysia

Review of solar drying systems with air based solar collectors in Malaysia

A review on thermal analysis of hybrid greenhouse solar dryer (HGSD)

Influence of drying methods on quality of Zanthoxylum armatum DC. and mathematical modelling of the drying kinetics

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