Development of a miniature cyclone separator operating at low Reynolds numbers as a pre-separator for portable black carbon monitors

An, Ik Hyun; Lee, Chang Hoon; Lim, Jun Hyung; Lee, Hyoyoung; Yook, Se-Jin

doi:10.1016/j.apt.2021.10.027

Cited by 15 publications

(3 citation statements)

References 31 publications

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“…Mofarrah et al [34] designed a cyclone for indoor use to separate the pollens that may lead to severe allergies in humans. An et al [35] made use of cyclone separators for sampling black carbon.…”

Section: Introductionmentioning

confidence: 99%

CFD Investigations of Cyclone Separators with Different Cone Heights and Shapes

et al. 2022

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Due to the great achievements in the field of optimization of the design of cyclone separators, non-standard solutions are sought to increase their performance. Therefore, in this study, we consider the impact of different cone and cylinder height variants on the performance of cyclone separators. Additionally, we propose non-standard shapes for these sections. Three different heights: H/D = 0.5, 1.0, and 1.5, with D (the main cyclone body diameter), are analyzed. Since the cone is one of the most important geometrical entities, three different shapes viz. a straight (conventional) profile, a concave profile as well as a convex profile are also taken into account. Cyclone performance is rated at three different inlet velocities viz. Uin = 10 m/s, 15 m/s, and 20 m/s. Hence, a total of 27 simulations have been performed using the Reynolds stress model. It becomes apparent from the present study that the pressure loss is lowest in the convex variant, whereas the separation efficiency is better in the conventional design. Furthermore, an increase in the length of the cylindrical section reduces pressure drop with a mild decrease in the collection efficiency in all variants.

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Section: Introductionmentioning

confidence: 99%

CFD Investigations of Cyclone Separators with Different Cone Heights and Shapes

et al. 2022

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“…The spiral blade can transport material to avoid blockage. The conveying efficiency Q g should satisfy the following Equation (13).…”

Section: Rapeseed Impuritiesmentioning

confidence: 99%

“…However, in rape cleaning using cyclone separation, the loss rate is generally greater than 5%, and the cleaning rate is lower than 94%. To improve the performance of cyclone separation, scholars researched the structure of the cyclone and the motion state of the threshing mixture in the cyclone [12][13][14] . Zhou et al [15] designed a cyclone with an offset suction port and a cyclone separation system with a double grain elevator.…”

Section: Introductionmentioning

confidence: 99%

Parameter matching and experiment of the combined cyclone separation and cylinder sieve cleaning system for rapeseed combine harvester

Yuan,

Liao,

Wan

et al. 2024

International Journal of Agricultural and Biological Engineering

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Existing rape combine harvester with a cyclone separation cleaning device has the challenge that the loss rate and the cleaning rate increase and decrease simultaneously. A cleaning process route was proposed, which involves the cyclone separation cleaning device removing light and tiny impurities, and the cylinder sieve device removing coarse and long impurities such as pod shells and short stems. A novel cleaning system combining the cyclone separation cleaning device and cylinder sieve cleaning devices was designed. The ranges of the structure and operation parameters for each component were analyzed based on kinematics and dynamic analysis. A four-factor five-level quadratic orthogonal test was carried out, in which the loss rate and cleaning rate were taken as the evaluation indexes. The velocity at the suction port, the rotation speed of the cylinder sieve, the screw pitch of the spiral blade and the diameter of the sieve hole were taken as the influencing factors. The orthogonal test results showed that the cleaning system performed best at a rotation speed of the winnower is 600 r/min, an airflow velocity at the suction port is 18.25 m/s, a rotation speed of the cylinder sieve is 87 r/min, a screw pitch of the spiral blade is 440 mm and a diameter of the sieve hole is 4.48 mm. At this time, the loss rate of the cleaning system is 3.22%, and the cleaning rate is 95.67%. Compared to the conventional cyclone separation cleaning device, the loss rate is reduced by 2.17% and the cleaning rate is increased by 1.05%. This study can provide a reference for the optimal cleaning system design for rape combine harvesters.

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A MATLAB topology optimization code to control the trajectory of particle in fluid

Choi

Yoon

2023

Struct Multidisc Optim

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Development of a miniature cyclone separator operating at low Reynolds numbers as a pre-separator for portable black carbon monitors

Cited by 15 publications

References 31 publications

CFD Investigations of Cyclone Separators with Different Cone Heights and Shapes

CFD Investigations of Cyclone Separators with Different Cone Heights and Shapes

Parameter matching and experiment of the combined cyclone separation and cylinder sieve cleaning system for rapeseed combine harvester

A MATLAB topology optimization code to control the trajectory of particle in fluid

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