Heat and mass transfer in a honey dehydrator with closed air circulation

Malec, Marcin; Morawski, Marcin; Niezgoda-Żelasko, Beata

doi:10.1016/j.fbp.2020.10.017

Cited by 3 publications

(12 citation statements)

References 11 publications

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“…A detailed description of the heat and mass transfer processes and experimental results of a closed-loop honey dehydrator were described in the article [17].…”

Section: Heat and Mass Exchange In A Honey Dehydratormentioning

confidence: 99%

“…The experimental results presented in [17] were generalised through criterion equations to determine the values of heat (1) and mass transfer (2) coefficients in geometrically similar honey dehydrators:…”

Section: Heat and Mass Exchange In A Honey Dehydratormentioning

confidence: 99%

“…The scope of validity of Formulas ( 1) and ( 2) included the following ranges of variation of the criterion numbers: 600 ≤ Re p ≤ 2400, 2400 ≤ Re H ≤ 11,000, 0.13 ≤ K ≤ 0.4, 1.8 ≤ Sc ≤ 5.8. In paper [17], at each time step, the measured inlet and outlet parameters of air, honey, and water received in the dehydrator were used to determine criterion equations of the form (1) and ( 2). In the study presented here, the initial honey and air parameters and the heat and mass balance equations of the dehydrator, supplemented by the criterion Equations ( 1) and ( 2) and the heat balance equations of the cooling unit, were used to determine the air and honey parameters at successive time steps in the honey dehydration process.…”

Section: Heat and Mass Exchange In A Honey Dehydratormentioning

confidence: 99%

“…Experimental results indicated that regardless of the type of honey, freeze drying and the use of low product freezing temperatures (e.g., −40 • C) result in better drying efficiency. The study [17] is the first paper to present a theoretical and experimental analysis of heat and mass transfer processes in a rotary-spray honey dehydrator with closed-circuit airflow and heat pump support. Based on their experimental results, the authors [17] proposed criterion relationships for calculating heat and mass transfer coefficients between honey and air for a vertical honey dehydrator equipped with a spraying system, honey mixers, and an air drying and heating system with an external heat pump.…”

Section: Introductionmentioning

confidence: 99%

“…Q r , from Equations ( 14), ( 16) and (17), respectively; • Actual mass of water δm removed from honey from relationship (12) and relationship (δm…”

mentioning

confidence: 99%

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Effective Condensing Dehumidification in a Rotary-Spray Honey Dehydrator

2021

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This paper presents a mathematical model of the heat and mass transfer processes for a rotary-spray honey dehydrator with a heat pump and a closed air circuit. An analytical calculation model, based on the energy balance equations of the dehydrator and heat pump, was used to model the transient dehydration process of honey in a dehydrator. The presented article includes a different approach to modelling both the dryer and the heat pump assisting the drying process. The novel quality of this study lies in the use of original equations to determine the heat and mass transfer coefficients between honey and air and using an actual model of a cooling unit to model the honey dehydration process. The experimentally verified calculation algorithm enables an analysis of the effects of air flow rate, mixer rotation speed, and cooling unit power on the efficiency of the drying process. The dehydrator calculation model was used to minimize the drying time by selecting the optimal evaporative temperature values of the cooling unit. For fixed mixer speed and air flow rates, optimal values of evaporation temperatures allow for 8–13% reduction in honey drying time and an increase in the specific moisture extraction rate (SMER) by 4–32%.

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“…A detailed description of the heat and mass transfer processes and experimental results of a closed-loop honey dehydrator were described in the article [17].…”

Section: Heat and Mass Exchange In A Honey Dehydratormentioning

confidence: 99%

Section: Heat and Mass Exchange In A Honey Dehydratormentioning

confidence: 99%

Section: Heat and Mass Exchange In A Honey Dehydratormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Q r , from Equations ( 14), ( 16) and (17), respectively; • Actual mass of water δm removed from honey from relationship (12) and relationship (δm…”

mentioning

confidence: 99%

See 3 more Smart Citations

Effective Condensing Dehumidification in a Rotary-Spray Honey Dehydrator

2021

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Honey De-crystallization by radio frequency heating for process efficiency: Computational monitoring combined with time domain nuclear magnetic resonance

Karatas

Uyar

Berk

et al. 2023

Innovative Food Science & Emerging Technologies

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Closed flow solar dehydration with the use of silver nanoparticles: Application for the production of Pouteria lucuma flour

2021

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In this research, a closed-flow solar dehydrator with a refrigeration moisture extraction system was evaluated, likewise, the dehydration temperature time was optimized by evaluating three types of heat transfer fluids. The dehydration equipment included devices to absorb thermal energy from incident sunlight, such as a trombe wall and a parabolic cylindrical collector, and a thermo bank system. In addition, the influence of three types of heat transfer fluids (water, oil and oil nanofluid þ silver nanoparticles) was evaluated. This dehydration system was applied to process the Pouteria lucuma fruit. The results indicate the reduction of the dehydration time by 58.19% using nanofluid. This treatment prevents the modification of the physicochemical properties of the product and helps preserving its organoleptic properties.

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Heat and mass transfer in a honey dehydrator with closed air circulation

Cited by 3 publications

References 11 publications

Effective Condensing Dehumidification in a Rotary-Spray Honey Dehydrator

Effective Condensing Dehumidification in a Rotary-Spray Honey Dehydrator

Honey De-crystallization by radio frequency heating for process efficiency: Computational monitoring combined with time domain nuclear magnetic resonance

Closed flow solar dehydration with the use of silver nanoparticles: Application for the production of Pouteria lucuma flour

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