Hybrid heat pipe screw dryer: A novel, continuous and highly energy-efficient drying technology

Mustaffar, Ahmad; Phan, Anh N.; Boodhoo, Kamelia

doi:10.1016/j.cep.2018.04.035

Cited by 13 publications

(9 citation statements)

References 13 publications

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“…They tried to find the difference from conventional thermosyphon and reported the annular thermosyphon is dominated by wall shear viscosity force than the buoyance force. Mustaffar et al [17,18] presented a new configuration of a 515 mm-long stainless steel CAHP with an outer diameter of 76.2 and inner diameter of 38.1 mm. Their entire inner central space of the tube was specified as the condenser.…”

Section: Introductionmentioning

confidence: 99%

Thermal and Flow Characteristics in a Concentric Annular Heat Pipe Heat Sink

et al. 2020

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A concentric annular heat pipe heat sink (AHPHS) was proposed and fabricated to investigate its thermal behavior. The present AHPHS consists of two concentric pipes of different diameters, which create vacuumed annular vapor space. The main advantage of the AHPHS as a heat sink is that it can largely increase the heat transfer area for cooling compared to conventional heat pipes. In the current AHPHS, condensation takes place along the whole annular space from the certain heating area as the evaporator section. Therefore, the whole inner space of the AHPHS except the heating area can be considered the condenser. In the present study, AHPHSs of different diameters were fabricated and studied experimentally. Basic studies were carried out with a 50 mm-long stainless steel AHPHS with diameter ratios of 1.1 and 1.3 and the same inner tube diameter of 76 mm. Several experimental parameters such as volume fractions of 10–70%, different air flow velocity, flow configurations, and 10–50 W heat inputs were investigated to find their effects on the thermal performance of an AHPHS. Experimental results show that a 10% filling ratio was found to be the optimum charged amount in terms of temperature profile with a low heater surface temperature and water as the working fluid. For the methanol, a 40% filling ratio shows better temperature behavior. Internal working behavior shows not only circular motion but also 3-D flow characteristics moving in axial and circular directions simultaneously.

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Section: Introductionmentioning

confidence: 99%

Thermal and Flow Characteristics in a Concentric Annular Heat Pipe Heat Sink

et al. 2020

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“…According to reports, drying accounts for 10-25% of industrial energy use in developed countries, and the innovation of drying technology focuses on improving energy efficiency and reducing carbon emissions of dryers [1][2]. According to a study of 11 industrial branches in the United Kingdom, drying energy consumption accounts for 11.6% of the total energy consumption.…”

Section: Introductionmentioning

confidence: 99%

Research on Energy Saving and Environmental Protection Electric Power Grain Circulation Drying System

Wang

Qiao²,

Yue³

2022

J. Adv. Therm. Sci. Res.

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A 50-ton/batch electric grain circulation drying system was designed that adopted clean electric energy as a drying heat source. The exhaust gas of the dryer was recycled after condensation and dehumidification. The drying system has the advantages of energy saving and environmental protection. The corn drying test showed that the specific heat consumption was 3185 kJ/kg H2O in close operating mode, compared to the Chinese standard of 5700 kJ/kg H2O, and the energy consumption ratio was 44%. This research pioneers a way of saving energy and protecting the environment from drying and comes up with a new thought on how to utilize the waste heat from exhaust gas and the latent heat released by the evaporation of water vapor reasonably.

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“…Usando un análisis Universidad EIA / Rev.EIA.Univ.EIA de varianza, los autores encontraron que todos los factores fueron significativos para explicar el contenido de humedad y el tiempo de secado del arroz. Mustaffar et al (2018) informaron sobre un nuevo tipo de secador de tornillo transportador con calentamiento pasivo por un tubo de calor anular en el secado de una suspensión de materia prima de cerámica. Los tres factores considerados fueron relación de llenado, inclinación y temperatura, todos en tres niveles para un diseño factorial 3 3 .…”

Section: Introductionunclassified

Modelos GAMLSS para analizar el grado secado de calcio dihidratado

Barajas

Urrego

Chamorro

2021

reveia

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Transportar y secar materiales son dos actividades usuales en diferentes procesos productivos y los tornillos transportadores sirven para realizar estas dos actividades simultáneamente. Las condiciones de operación de un tornillo transportador son importantes porque influyen directamente en características finales como son el grado de secado del producto y la eficiencia térmica del proceso. En este artículo se emplearon los modelos GAMLSS para estudiar la influencia de tres variables operacionales, velocidad rotacional del tornillo, temperatura y flujo de alimentación, sobre el grado de secado del acetato de calcio dihidratado al ser transportado y secado en un tornillo. En este artículo se encontró que el modelo de regresión beta permite explicar el grado de secado mejor que otros modelos de regresión como el normal, exponencial, gamma, Weibull y logit-normal. Adicionalmente se encontró que, la operación del tornillo a una temperatura de 45°C, velocidad rotacional de 3 rpm y una velocidad de flujo de 6 L/min permiten obtener el máximo grado de secado 35,46%.

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Hybrid heat pipe screw dryer: A novel, continuous and highly energy-efficient drying technology

Cited by 13 publications

References 13 publications

Thermal and Flow Characteristics in a Concentric Annular Heat Pipe Heat Sink

Thermal and Flow Characteristics in a Concentric Annular Heat Pipe Heat Sink

Research on Energy Saving and Environmental Protection Electric Power Grain Circulation Drying System

Modelos GAMLSS para analizar el grado secado de calcio dihidratado

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