Performance analysis of a forced convection mixed mode horizontal solar cabinet dryer for drying of black ginger (Kaempferia parviflora) using two successive air mass flow rates

Ekka, Jasinta Poonam; Bala, Krishnendu; Muthukumar, P.; Kanaujiya, Dipak Kumar

doi:10.1016/j.renene.2020.01.035

Cited by 86 publications

(8 citation statements)

References 34 publications

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“…Accelerating the drying process of black ginger in a forced convection mixed mode horizontal solar dryer by using two successive air mass flow rates as a new and innovative approach studied by Ekka et al (2020) using experimental method. It was found that by the use of this approach, the energy consumption decreased by 50%.…”

Section: Introductionmentioning

confidence: 99%

“…The results indicated that the heat pump assisted solar dryers is more energy efficient than the conventional solar dryers. (Abubakar et al, 2018;Akamphon, Sukkasi, & Sedchaicharn, 2018;Akbulut & Durmus, 2010;Atalay, 2019;Benhamoua & Fazouane, 2014;César, Lilia, Octavio, Isaac, & Rogelio, 2020;Demissiea et al, 2019;Ekka, Bala, Muthukumar, & Kanaujiya, 2020;Emetere, Osunlola, & Otoko, 2019;Essalhi, Benchrifa, Tadili, & Bargach, 2018;Ghaffari & Mehdipour, 2015;Hatami, Payehaneh, & Mehrpanahi, 2020;Islam, Islam, Tusar, & Limon, 2019;Kuan et al, 2019;Kumar, Kumar, & Singh, 2015;Lakshmi, Muthukumar, Layek, & Nayak, 2019;Lamrani, Khouya, & Draoui, 2019;Mathew & Thangavel, 2019;Motahayyer, Arabhosseini, & Samimi-Akhijahani, 2019;…”

Section: Introductionmentioning

confidence: 99%

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Solar dryer performance simulation: Experimental and numerical study

Mehdipour

Ghaffari

2021

J Food Process Engineering

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In this study, effect of solar irradiation and suction head on an indirect cabinet solar dryer performance is investigated experimentally and numerically. In this regard, a specific experimental apparatus consisting a collector, heaters and adjustable chimney is fabricated to measure the air flow velocity and temperature at collector outlet in various irradiance (300, 400, 500, 600, 800, and 1,000 W/m2) and chimney height (1.85, 2.05, 2.25, and 2.55 m). In addition to the above abilities of experimental setup, more accurate thermal and hydraulic results are achieved. The obtained results are useful to the field since there are many defects in available simulations of collector. Some of the defects concerns incomplete prediction of thermal losses to the environment, ignoring secondary flows and vortices formed by velocity increment through the collector, etc. In the present study, computational fluid dynamics (CFD) is used for modeling the drying chamber utilizing the pressure jump method and simulating the mass transfer phenomenon by a heat source. The results for the studied case (grape as to‐be‐dried product) as an example, show that the solar irradiation augmentation leads to the temperature and velocity increment while the suction head increment leads to an increasing‐decreasing behavior for the temperature. It is also demonstrated that by increasing the solar irradiation from 300 to 1,000 W/m2, the thermal efficiency of the collector and drying chamber increase from 42.92% to 64.31% and 10.08% to 15.15% respectively and the drying time of grapes reduces from 216 hr to 143 hr. Practical Applications The present study experimentally and numerically investigates a solar dryer for the specific application of grape drying although it can be applied for drying a wide types of fruits. The experimental part of the accomplished research is similar with solar chimney in a way that the present experimental results can be used for solar chimneys too. Based on the obtained results, the drying time as well as the air flow has been improved by applying the suggested drying method.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Solar dryer performance simulation: Experimental and numerical study

Mehdipour

Ghaffari

2021

J Food Process Engineering

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“…Structural parameters of the system need to be modified as there is significant wastage of energy is reported. 5 (Ekka et al, 2020) Chamber-tray type…”

Section: Mixed Mode Dryermentioning

confidence: 99%

Solar Drying of Herbal Wealth in Eastern Himalaya: A Review

Kumar¹,

Chauhan²,

Pathania³

et al. 2022

Frontiers in Heat and Mass Transfer

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Solar dryers have proven to be one of the best environmentally friendly approaches for drying purpose of medicinal plants and agricultural crops. Use of solar radiations in drying purpose of plant parts has proven economically as well as environmentally responsible and sensible application. Plants are the treasure of nature with hidden medicinal properties to treat diseases. Plant material should be processed properly for extraction of medicinal molecules in terms drying to decrease the manufacturing loss and to increase the standard of product. Cognizances of ethnobotanical knowledge on plant wealth are extremely beneficial in utilization and exploration of natural resources. Conventionally, low drying temperatures between 30-40 °C, with economically beneficial techniques are required to protect sensitive active ingredients. Therefore, the objective of reviewing research in medicinal plant drying is to find out optimum drying temperature and best solar dryer for drying purposes of plant parts in terms of quality and drying costs. Rendering to human requisites, solar appliances for drying purposes will be used as the best alternative to standard sun-drying technique. This review focused on effective drying is demand of present scenario for the application of heat trapped from solar radiations for drying purpose in order to maintain the quality and active ingredients of plants. Conventionally, low drying temperatures between 30-40 °C, with economically beneficial techniques are required to protect sensitive active ingredients. Indirect type of solar dryers can easily fulfill all the terms for dying plant products in terms of standard and yield.

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“…In developing countries solar dryer of hot air type is the dominant method that is used for drying medicinal herbs. Recently, various of types of medicinal herbs have been dried using the solar dryers of hor air type such as: black ginger [9], lemon verbeva leaves [10], curcuma [11], mint [12], [13], rosella [14], [15], Valeriana jatamansi [16], red pepper [17], wild ginger [18], Centella asiatica [19], thymus and mint [20], jerky [21], Andrographis paniculata [22], green tea [23], fenugreek leaves [24], and onion slice [25].…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of the performance of a solar dryer integrated with solid desiccant coloums using water based solar collector for medicinal herb

Yahya

Hasibuan

Sundari

et al. 2021

IJPEDS

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This study is concerned with the analyses of performance on a solar dryer integrated with solid desiccant coloums using water based solar collector. The dryer consists of a solar water collector, two solid desiccant coloums, a water storage tank, two heat exchangers, an air heater, and a drying chamber. The dryer decreased the <em>Centella asiatica</em> L moisture content from 88.3% (wb) to 15.9% (wb) within 12 hours, with an average temperature and relative humidity of 45.4°C and 25.8%, respectively. The rate of moisture evaporation and the specific moisture evaporation rate were in the range of 0.001-1.762kg/h and 0.02-0.482 kg/kWh, with 0.594kg/h and 0.169kg/kWh in average values, respectively. The dryer efficiency was in the range of 0.62%-30.4%, with 15.4% in average value. The energy required for moisture evaporation and total energy input to the dryer were in the range of 26.9-1132.2W and 3638.0-4329.7W, with 601.8 W and 3967.4 W in average values, respectively. The efficiency of collector and the heat exchanger effectiveness were in the range of 38.1-50.5% and 65.1-79.7%, with 45.0% and 73.0% in average values, respectively. The result shows that the dryer is suitable for drying <em>Centella asiatica </em>L, this is due to the low temperature of drying air and high moisture evaporation rate.

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Performance analysis of a forced convection mixed mode horizontal solar cabinet dryer for drying of black ginger (Kaempferia parviflora) using two successive air mass flow rates

Cited by 86 publications

References 34 publications

Solar dryer performance simulation: Experimental and numerical study

Solar dryer performance simulation: Experimental and numerical study

Solar Drying of Herbal Wealth in Eastern Himalaya: A Review

Experimental investigation of the performance of a solar dryer integrated with solid desiccant coloums using water based solar collector for medicinal herb

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