Energy reduction for commercial freezer by force convection cooling of heatsink

Thiangchanta, Surasit; Khiewwijit, Rungnapha; Chainetr, Siraprapa; Mona, Yuttana

doi:10.1016/j.egyr.2022.05.169

Cited by 3 publications

(1 citation statement)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Forced convection is the convection transfer of heat in which the flow of fluid is forced to flow through a solid surface [17]. The procedure for calculating the forced convection heat transfer starts by looking for the Reynolds, Prandtl, and Nusselt Numbers to get the coefficient of convection heat transfer values as follows:…”

Section: Forced Convectionmentioning

confidence: 99%

The Simulation of Fluid Flow with a Vortex Generator 35° toward the Y-axis to Heat Transfer in Spray Dryer

Setyadi

Anggrainy

Yoga

et al. 2022

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

The Spray Dryer is a spray drying machine to change liquid into dry powder. The spray drying machine can be defined by the drying process in a cylinder, utilizing air heated in the heater and flowing through a blower connected to a vortex generator with an angle of 35° to the Y-axis. The vortex generator causes the formation of turbulence of airflow. Heat transfer occurs between the hot air flow and the milk droplets so that the liquid milk becomes a dry powder. This research aims to see the vortex phenomenon, namely the turbulence intensity, airflow velocity, heat flux, and temperature distribution in a cylinder, compared with an experiment that used four conditions of temperature inlet. There is 80°C, 90°C, 100°C and 110°C. The liquid used in this research is dairy cow’s milk mixed with water and maltodextrin, which has a density value of 1056 kg/m3 and a specific heat value of 3930 J/kg K. The machine’s cylinder has a diameter of 0.5 m with a wall thickness of 1 x 10−3 m and a height of 2 m with a capacity of 1.27 l/hour with a drying time of 80 minutes. The speed airflow of this machine into the cylinder has 16 m/s with a cross-sectional diameter of 9,5 x 10−2 m and a thickness of 1 x 10−3 m which has a debit of 0.11 m3/s. In addition, the injector used has a diameter of 2 x 10−4 m and a speed of 13,54 m/s with a flow rate of 4,5 x 10−4 kg/s with a spray angle of 45° u. Besides that, the analysis results show that the airflow turbulence area is in the form of a vortex so that the drying process of heat transfer that occurs between the product material and the airflow becomes faster.

show abstract

Section: Forced Convectionmentioning

confidence: 99%

The Simulation of Fluid Flow with a Vortex Generator 35° toward the Y-axis to Heat Transfer in Spray Dryer

Setyadi

Anggrainy

Yoga

et al. 2022

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

show abstract

Numerical bio-convective assessment for rate type nanofluid influenced by Nield thermal constraints and distinct slip features

Liu

Sadaf

et al. 2023

Case Studies in Thermal Engineering

View full text Add to dashboard Cite

Pore-scale numerical investigation on comprehensive heat transfer performance of homogeneous and graded metal foam heat sinks

Shen,

Liu,

Yang

et al. 2024

THERM SCI

View full text Add to dashboard Cite

In order to improve the heat dissipation efficiency of heat sinks, heat sinks filled with metal foam were proposed and numerically studied in this work. Different shapes, including the tetrakaidecahedron, triangular prism, and equivalent tetrahedron, were employed to develop geometries for the cells, ligaments, and nodes of the metal foam. Computational simulation was carried out to analyze the hydraulic and thermal performance of the homogeneous metal foam (HMF)-filled heat sinks and graded metal foam (GMF)-filled heat sinks. The study found that well-designed GMF-filled heat sinks can improve both hydraulic and thermal performance. A graded PPI negative change along the X-axis direction can improve the comprehensive heat transfer performance (CHTP), and the positive change has a similar effect. Graded PPI negative change along the Y-axis direction can effectively improve the CHTP, while the positive change has no effect. Moreover, a greater thickness of the metal foam with a larger PPI leads to better performance. GMF-filled heat sinks can also effectively reduce the surface temperature of the bottom plane and enhance the convection performance.

show abstract

Energy reduction for commercial freezer by force convection cooling of heatsink

Cited by 3 publications

References 7 publications

The Simulation of Fluid Flow with a Vortex Generator 35° toward the Y-axis to Heat Transfer in Spray Dryer

The Simulation of Fluid Flow with a Vortex Generator 35° toward the Y-axis to Heat Transfer in Spray Dryer

Numerical bio-convective assessment for rate type nanofluid influenced by Nield thermal constraints and distinct slip features

Pore-scale numerical investigation on comprehensive heat transfer performance of homogeneous and graded metal foam heat sinks

Contact Info

Product

Resources

About