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Temperature and humidity controllable micron-sized particle turbulence agglomeration experimental device

An experimental device, micron-scale technology, used in monitoring particle agglomeration, measuring device, particle and sedimentation analysis, etc., can solve problems such as luminous flux decline, mechanical failure, output power reduction, etc.

Inactive Publication Date: 2021-06-08
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, fine particle deposition generally has a negative effect, such as the heat transfer deterioration caused by the accumulation of dust on the surface of the heat exchange tube in the boiler; Deposition in MEMS may cause mechanical failure or flow blockage, deposition of atmospheric fine particles in the human respiratory tract / alveoli causing disease, etc.

Method used

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  • Temperature and humidity controllable micron-sized particle turbulence agglomeration experimental device
  • Temperature and humidity controllable micron-sized particle turbulence agglomeration experimental device
  • Temperature and humidity controllable micron-sized particle turbulence agglomeration experimental device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] figure 1 A schematic diagram of an experimental device for turbulent agglomeration of micron-sized particles with controllable temperature and humidity is shown. In the figure, the experimental device for the turbulent agglomeration of micron-sized particles with controllable temperature and humidity includes an air particle generator, an air particle mixing and heating device, a high-speed camera device, an air particle emission processing device, and a turbulent collision agglomeration device. The gas particle generating device includes a gas cylinder 1, a mass flow meter 3, a humidifier 4 and a particle generator 5. The humidifier 4 includes a sprayer 4a and a mixer 4b. The gas cylinder 1 passes through the first three-way valve 2a through the first branch pipe 1a, One flowmeter 3 is connected to the gas mixer 4b, the gas cylinder 1 passes through the first three-way valve 2a through the second branch pipe 1b, and the other flowmeter 3 is connected to the sprayer 4a,...

Embodiment 2

[0037] Set the size of the turbulent flow agglomerator to be 100mm×40mm×8mm in length×width×height, the diameter of the spoiler impeller is 2mm, the vertical distance is 8mm, and the left and right distance is 10mm. -EDEM coupling is used for numerical simulation calculation verification, the gas flow rate is set to 7.5m / s, and the spoiler impeller is driven by airflow. image 3 It shows the distribution diagram of 2μm particle number and agglomeration number in different turbulence areas. In the figure, a is the distribution diagram of 2μm particle number and agglomeration number passing through the turbulence agglomerator, b is the 2μm particle number and agglomeration number without disturbing flow The distribution map of , black represents the number of particles that have agglomerated, and gray represents the number of particles in this area. from image 3 It can be seen that after the disturbance of the turbulent collision and agglomeration device, the number of 2 μm pa...

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Abstract

The invention discloses a temperature and humidity controllable micron-sized particle turbulence agglomeration experimental device, and belongs to the field of temperature and humidity controllable turbulence field collision agglomeration experimental devices. The temperature and humidity controllable experiment device for turbulent agglomeration of the micron-sized particles can realize the collision agglomeration experiment research work among the micron-sized particles with the airflow speed controlled to be 0.5-20m / s and the airflow temperature controlled to be 220-230 DEG C, and provides effective support for the theoretical research of the collision agglomeration process among the particles. Compared with a traditional fixed turbulent flow column structure, the device is provided with the rotatable turbulent flow impeller, starting is fast, the turbulent flow effect is higher, the particle collision efficiency is improved, and the device has a large application prospect in the particle dust removal field. The turbulent flow collision agglomeration device generates turbulent flow fields in different forms by changing the size, the number and the rotating speed of turbulent flow impellers. In addition, the high-speed camera system can clearly shoot the process that particles with the particle size being 2 microns or above collide with the agglomeration plate.

Description

technical field [0001] The invention relates to an experimental device for turbulent agglomeration of micron-sized particles with controllable temperature and humidity, and belongs to the field of experimental devices for turbulent flow field collision and agglomeration with controllable temperature and humidity. Background technique [0002] The phenomenon of fine particle deposition exists in many fields such as energy, environmental engineering, chemical industry, microelectronics and mechanical engineering. On the one hand, fine particle deposition generally has a negative effect, such as the heat transfer deterioration caused by the accumulation of dust on the surface of the heat exchange tube in the boiler; Deposition in MEMS may cause mechanical failure or cause flow blockage, deposition of atmospheric fine particles in the human respiratory tract / alveoli causing disease, etc. On the other hand, fine particle deposition can be enhanced in practice. Taking the field o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/04G01N15/00
CPCG01N15/00G01N15/04G01N2015/0092
Inventor 东明王爽李素芬尚妍
Owner DALIAN UNIV OF TECH
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