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Water drop freezing nucleus measuring device and experimental method

A technology for nuclear measurement and water droplets, which is applied in the field of water droplet freezing nuclear measurement devices and experiments, can solve problems such as errors, achieve the effects of easy cleaning, reduce experimental preparation work, and improve accuracy

Inactive Publication Date: 2018-09-04
NANJING UNIV OF INFORMATION SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This has caused a series of errors in the study of nucleation process, cloud formation and precipitation, etc.

Method used

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  • Water drop freezing nucleus measuring device and experimental method

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Experimental program
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Effect test

Embodiment 1

[0028] like figure 1 The schematic diagram of the device shown includes a cooling plate 1, a nano-superhydrophobic coating 2, a support body 4, a protective gas inlet 5 (inner diameter 4mm), an experimental chamber 6, a CCD camera 7 (Germany Allied Vision Technologies, GT4907), a control Signal line 8, microcomputer 9 (Lenovo ThinkCentre E74).

[0029] The supporting body 4 is arranged on the condensing plate 1 in a detachable manner, and the supporting body 4 and the condensing plate 1 jointly form an experimental chamber 6; in order to make the experimental chamber 6 airtight, a second A sealing ring 3;

[0030] The support body 4 is provided with a protective gas inlet 5 on one side of the experimental chamber 6, and a protective gas outlet on the other side; in practical applications, the air in the experimental chamber 6 is completely removed and filled with nitrogen to avoid air and other atmospheric traces. The effect of mass substances on the freezing nuclei of water...

Embodiment 2

[0044] Embodiment 2, a kind of experimental method based on water drop freezing nuclei measuring device, comprises the following steps:

[0045] Provide water droplets, and drop a drop of water (about 2 microliters) on the nano-superhydrophobic coating 2 of the condensation plate 1 to ensure that the water droplets can be circular on the nano-superhydrophobic coating 2; different experimental requirements, drop different concentrations Water droplets (such as rainwater with a pH value of 3.0, 1%wt chlorite, 0.01%wt newly configured AgI and other solutions, selected according to research needs); form an experimental chamber 6, and install a support body 4 on the condensation plate 1 With the CCD camera 7, it is ensured that the experimental chamber 6 is in a sealed state;

[0046] Form a protective atmosphere, open the protective gas inlet 5 and the protective gas outlet, pass the protective gas (nitrogen, about 0.2L / min) into the protective gas inlet 5, so that the experimenta...

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Abstract

The invention belongs to the fields of equipment and a method used in atmospheric physics and artificial influence weather research, and particularly relates to a water drop freezing nucleus measuringdevice and an experimental method. The water drop freezing nucleus measuring device comprises a condensation plate, a nanometer superhydrophobic coating, a supporting body, a CCD camera and a microcomputer, wherein the supporting body is arranged on the condensation plate; the supporting body and the condensation plate together define an experimental chamber; the supporting body is provided witha protective gas inlet formed in one side of the experimental chamber and is provided with a protective gas outlet in the other side of the experimental chamber; the nanometer superhydrophobic coatingis arranged on the condensation plate and is positioned on the contact surface of the condensation and the supporting plate; the CCD camera is arranged at the upper end of the supporting body and ispositioned at the upper end of the experimental chamber; the CCD camera is connected with the microcomputer; the microcomputer can acquire information stored in the CCD camera; the condensation plateis connected with the microcomputer; the microcomputer can control cooling of the condensation plate and can accurately acquire the temperature change of the condensation plate. The measuring accuracyand precision of the water drop freezing nucleus can be effectively improved.

Description

technical field [0001] The invention belongs to the field of equipment and methods used in the research of atmospheric physics and artificial weather modification, and in particular relates to a water droplet freezing nucleus measurement device and an experimental method. Background technique [0002] The three states of water in the atmosphere can be transformed into each other, which plays an important role in the process of cloud formation and rain. The transformation of vapor and liquid water into solid (ice) is called ice nucleation. Ice nucleation has always been an important research topic in cloud and precipitation physics. On the one hand, because the ice phase plays a very important role in the precipitation process, on the other hand, catalysts are used to promote the formation of ice crystals in clouds to start the Bergeron process or increase the precipitation efficiency. It is the main way of artificial rainfall enhancement at present. Experimental studies hav...

Claims

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Application Information

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IPC IPC(8): G01N25/14
CPCG01N25/142
Inventor 陈魁楚志刚胡正华蒋惠何川陈景华
Owner NANJING UNIV OF INFORMATION SCI & TECH
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