Design and development of an active indirect solar dryer for cooking banana

Etim, Promise Joseph; Eke, Akachukwu Ben; Simonyan, Kayode Joshua

doi:10.1016/j.sciaf.2020.e00463

Cited by 32 publications

(14 citation statements)

References 6 publications

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“…If the heated air leaving the collector is at collector temperature then the heat gained by the air Q g has been articulated as in Equation (9). 25,50–54

Q_{g} = m_{a} C_{pa} (T_{c} - T_{a}),

where m a is the mass of air leaving the dryer per unit time in kg/s, C pa is the specific heat capacity of the air in kJ/kg·K. The collector heat removal factor ( F R ) is the quantity that relates the actual useful energy gained by a collector to the useful gained by the air.…”

Section: Methodsmentioning

confidence: 99%

“…Energy balance equation for the drying process has also been expressed in this section of the manuscript. The total energy required for drying a given quantity of food items can be estimated using the basic energy balance equation for the evaporation of water 25,50,53

m_{w} L_{v} = m_{a} C_{p} (T_{1} - T_{2}),

where L v is the latent heat in kJ/kg, m w is the mass of water evaporated from the food item in kg, m a is the mass of drying air in kg, T 1 and T 2 are the initial and final temperatures of the drying air, respectively, in K. The mass of water evaporated has been calculated from the following Equation (14).…”

Section: Methodsmentioning

confidence: 99%

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Energy and exergy analyses of fabricated solar drying system with smooth and rough surfaces at different conditions: A case study

Geete

Singh

Rathore³

2021

Heat Trans

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For this experimental work, the solar dryer system has been fabricated. Various experiments have been performed to evaluate the performance of the fabricated dryer system. Energy and exergy concepts have been used for the assessment. And comparative analyses have also been done with smooth and rough surfaces: Grade 150 and Grade 300. This experimental work has been concluded as the maximum collector (i.e., 74°C) and cabinet temperatures (i.e., 66°C) are attained at 13:00 p.m. with Grade 300 surface. Maximum moisture loss (i.e., 35 g) and percentage moisture loss (i.e., 7.53%) are recorded at 13:00 p.m. again with a rough surface. Minimum exergy destruction rate (i.e., 0.294 W) but minimum exergy efficiency (i.e., 20.82%) are found at 17:00 p.m. with a black painted surface, which is not an acceptable condition. Maximum energy efficiency (i.e., 35.98%) and heat removal factor (i.e., 0.56) are obtained at 13:00 p.m. with a rough surface. The best performance from the fabricated solar system is received between 12:00 and 14:00 p.m. This study recommends rough surfaces and 12:00–13:00 p.m. timings for the solar drying system as the performance of the system is better in terms of energy–exergy.

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“…If the heated air leaving the collector is at collector temperature then the heat gained by the air Q g has been articulated as in Equation (9). 25,50–54

Q_{g} = m_{a} C_{pa} (T_{c} - T_{a}),

Section: Methodsmentioning

confidence: 99%

m_{w} L_{v} = m_{a} C_{p} (T_{1} - T_{2}),

Section: Methodsmentioning

confidence: 99%

Energy and exergy analyses of fabricated solar drying system with smooth and rough surfaces at different conditions: A case study

Geete

Singh

Rathore³

2021

Heat Trans

View full text Add to dashboard Cite

show abstract

“…The quality of dried fruit was also better with a drying period of 5 hours, whereas open sun drying took 8 hours to reach moisture equilibrium. Etim, Eke, & Simonyan [36] constructed an indirect-active solar dryer using plywood to dry bananas. A blower was placed at the air inlet to increase the airflow rate in the drying chamber.…”

Section: Active Solar Dryermentioning

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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“…However, this process consumes a lot of time and is energy intensive. So, reducing the drying period and the energy demand is one of the main goal of a solar dryer by developing an efficient drying system [4]. Low moisture content can create a cost effective way by reducing the mass as well as the volume of the products which can help to minimize the packing, storage and transportation cost [5].…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamics Investigations of Kaffir Lime Leaves Drying in a Swirling Solar Drying Chamber with Inclined Slotted Angle Air Distributor

Azmi

Razak²,

Tarminzi³

et al. 2023

CFDL

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The present work aims to investigate the behavior of drying kaffir lime leaves in a swirling solar drying chamber (S-SDC) fitted with an inclined slotted angle air distributor. A distributor plated with inclined slotted angle was located at the air inlet at the bottom of the chamber. Experimental and numerical methods have been applied to analyze the efficiency of developed S-SDC assisted solar drying system based on the moisture content (MC), moisture content ratio (MR) and drying rate (DR) were examined. The experimental results showed that the S-SDC can reduce the moisture content of kaffir lime leaves more rapidly than a conventional solar drying chamber (CSDC). The S-SDC gave a higher DR and decreased drying time compared to that of C-SDC. The results also indicated that operation at higher air velocities resulted in a greater DR, especially at the beginning stage of the drying process. For the S-SDC, the reduced of MC, MR and DR at a high air velocity (v = 2.0 m/s) was better than at low air velocities (v = 0.5 and 1.0 m/s). Drying chamber efficiency is also observed at a higher air velocity of 2 m/s for both SSDC and CSDC. In addition, obtained experimental findings are in line with numerical results. The outcomes of this study present the potential of using the S-SDC compared to the C-SDC to be used in drying crops.

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Design and development of an active indirect solar dryer for cooking banana

Cited by 32 publications

References 6 publications

Energy and exergy analyses of fabricated solar drying system with smooth and rough surfaces at different conditions: A case study

Energy and exergy analyses of fabricated solar drying system with smooth and rough surfaces at different conditions: A case study

Recent advances in solar drying system: A Review

Hydrodynamics Investigations of Kaffir Lime Leaves Drying in a Swirling Solar Drying Chamber with Inclined Slotted Angle Air Distributor

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