Effect of cover design on moisture removal rate of a cabinet type solar dryer for food drying application

Islam, Mukhlis; Islam, Imrul; Tusar, Mehedi; Limon, Amir Hamza

doi:10.1016/j.egypro.2019.02.181

Cited by 23 publications

(11 citation statements)

References 9 publications

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“…It was also reported that the solar hot air dryer was less efficient than the electrical thermal drier. Islam, Islam, Tusar, and Limon (2019) have compared three different solar driers on the moisture removal rate from various samples that include bananas. It was observed that the best performance was yielded by the natural draft chamber at 58.9%, followed by chimney type (44.5%) and attic space type (33%) for a time of 6 hr and that the difference was mainly due to reflective loss in attic space solar dryers.…”

Section: Introductionmentioning

confidence: 99%

Effect of pretreatments on drying of red dacca in a single slope solar dryer

Elangovan

Natarajan

2021

J Food Process Engineering

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Pretreatment of fruits normally increases moisture loss and reduces the overall drying period. The combination of pretreatments and drying assures the least color difference, excellent preservation, and better antioxidant activity. Pretreatment of Red Dacca is soaked in four different solutions, namely honey, lemon juice, sugar syrup, and ascorbic acid, for 10 min. The best solution for pretreatment is investigated

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Section: Introductionmentioning

confidence: 99%

Effect of pretreatments on drying of red dacca in a single slope solar dryer

Elangovan

Natarajan

2021

J Food Process Engineering

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“…It was also found that the maximum dryer efficiency is about 40%. Islam et al (2019) studied three different types of indirect natural convection solar dryers, including induced draft chamber, attic space type chamber and natural draft chamber dryers using experimental methods. It was revealed that the performance of natural draft chamber is better than other two chambers.…”

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%

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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“…Islam, Islam, Tusar, & Limon [30] evaluated three different passive solar dryers (thin tube chimney type, attic space type, and natural draft chamber) at natural conditions. The experiments were done by drying apple, banana, pineapple and guava from 10 AM to 4 PM for several days in different seasons.…”

Section: Passive Solar Dyermentioning

confidence: 99%

Recent advances in solar drying system: A Review

Razak

Tarminzi²,

Azmi³

et al. 2021

IJETS

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Research on solar dryer technology proliferates since it reduces the drying period while keeping nutritional values in the agricultural products. This paper presented a review of recent advances in the solar drying system. This review is composed of working principles and classifications of solar dryers. They were classified into two main elements: airflow modes, either passive or active, and the way heat is transferred: direct, indirect, mixed-mode, and hybrid. The hybrid system used several types of elements to supply additional heat in the drying system, as elaborated in this paper, such as the electrical heater, biomass, and photovoltaic system. The advantages and disadvantages of the solar dryer also being discussed in this paper

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Effect of cover design on moisture removal rate of a cabinet type solar dryer for food drying application

Cited by 23 publications

References 9 publications

Effect of pretreatments on drying of red dacca in a single slope solar dryer

Effect of pretreatments on drying of red dacca in a single slope solar dryer

Solar dryer performance simulation: Experimental and numerical study

Recent advances in solar drying system: A Review

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