Device for preventing nano-fluid particles in heat exchange system from aggregation and sedimentation
A heat exchange system and nanofluid technology, applied in the fields of filtration and separation, separation methods, chemical instruments and methods, etc., can solve the problems of easy sedimentation of nanoparticles, degradation of nanofluids, and large nanoparticles, and save labor and machinery. The effect of easy operation and simple replacement of components
Active Publication Date: 2018-09-07
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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However, practice has proved that when the nanofluid does not flow for a long time, the nanoparticles in the fluid are prone to sedimentation, causing the nanoparticles to form larger aggregates, which then sink to the bottom and fall off the fluid, and the nanofluid degenerates into an ordinary fluid.
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[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0019] Such as figure 2 As shown, a device for preventing nanofluid particles from agglomerating and settling in a heat exchange system includes a check valve 1, a pipeline 2, a filter screen 3, an automatic concentration monitoring device 4, a valve 5, a pump 6, and a filter screen 2 7. Concentration automatic monitoring device two 8, valve two 9, pump two 10. The inlet of pipeline 2 is connected to the inlet of the device through check valve 1, and the outlet of pipeline 2 is divided into two routes, one of which is connected to the outlet of the device through filter 1 3 and valve 1 5 and pump 1 6 respectively, and the other is connected through filter 2 7 respectively The outlet of the device, the valve two 9 and the pump two 10, the filter screen one 3 and the filter screen two 7 are respectively equipped with a concentration automatic monitoring...
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The invention relates to a device for preventing nano-fluid particles in a heat exchange system from aggregation and sedimentation. The device comprises a check valve, a pipeline, filtering screens, automatic concentration monitoring devices, a valve and a pump, wherein an inlet of the pipeline is connected with an inlet of the device through the check valve and an outlet of the pipeline is divided into two paths; each path is connected with an outlet of the device, the valve and pump through the filtering screens; each filtering screen is provided with the automatic concentration monitoring device. According to the device provided by the invention, the design of the pipeline, the pump and the filtering screens is used and the nano-fluid particles agglomerated and precipitated in the heatexchange system are ingeniously dispersed through a collision force between fluid and a pipe wall; the device is simple in structure and parts are simple to replace; the device is convenient to use and manipulate; the efficiency can be improved and the practicability is relatively high; the device is applicable to common nano-fluid.
Description
technical field [0001] The invention relates to a convective heat exchange system, in particular to a device for preventing aggregation and settlement of nanometer fluid particles in the heat exchange system. Background technique [0002] As we all know, the most extensive and most researched research on heat transfer enhancement technology is the enhancement of convective heat transfer, and the heat transfer performance of the heat transfer medium is also an important factor. In the past ten years, nanomaterials have developed rapidly, and nanofluids have emerged as the times require. We know that nanofluids can enhance heat transfer and are expected to be widely used in heat exchange systems. However, practice has proved that when the nanofluid does not flow for a long time, the nanoparticles in the fluid are prone to sedimentation, causing the nanoparticles to form larger aggregates, which then sink to the bottom and fall off the fluid, and the nanofluid degenerates into...
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IPC IPC(8): B01D35/143B01D35/20B01D35/12
CPCB01D35/12B01D35/143B01D35/20
Inventor 陈孝青杨亦擎
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER