A measuring method for effective range of spraying haze removal

A technology of effective range and measurement method, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as mutual interference, weakening effect of haze removal, cost waste, etc.

Inactive Publication Date: 2018-12-07
CALCULATION AERODYNAMICS INST CHINA AERODYNAMICS RES & DEV CENT
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Problems solved by technology

In recent years, a large number of spray-based haze removal methods have emerged, providing us with the possibility to reduce haze pollution within a certain range. However, unreasonable spray methods or layouts not only cannot make full use of the advantages of spray technology, but also cause extreme Large waste of cost, and may even interfere with each other, thus weakening the effect of haze removal

Method used

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  • A measuring method for effective range of spraying haze removal
  • A measuring method for effective range of spraying haze removal
  • A measuring method for effective range of spraying haze removal

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Experimental program
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Embodiment 1

[0022] Download version 5.3.3 of the publicly released mesoscale atmospheric prediction model AdvancedRegional Prediction System (ARPS) from http: / / www.caps.ou.edu / ARPS / , and install it in the Ubuntu system;

[0023] Modify the source code of the tinteg3d.f90 file under the main directory src / arps of the ARPS software version 5.3.3, and replace the droplets generated by spraying with the cloud water source item Introduce the water vapor diffusion equation in the form of , and establish a mesoscale evolution prediction model considering the spray process. The improved water vapor diffusion equation is as follows:

[0024]

[0025] Among them, ~ represents the filter variable, and along the flow direction ( ), extending to ( ) and the vertical direction ( ) position coordinates and instantaneous velocity component force; for time, is the air density, is the cloud water content, is the diffusion coefficient of water vapor in the air; cloud water source...

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Abstract

The invention discloses a measuring method for effective range of spraying haze removal. The method includes the following steps: firstly, the mesoscale atmospheric prediction model is introduced intothe liquid droplets produced by the spray as cloud water source term, and an evolution prediction model of mesoscale spray droplets is established by considering the diffusion process of cloud waterand its transformation process to water vapor and rainwater; then, based on the given boundary conditions and the initial meteorological field, the droplet content and its evolution process in the airunder certain spray intensity conditions are simulated; after that, the relationship curve between the haze removal effect and the droplet content in the air was obtained through the indoor experiment, so as to determine the critical droplet content of the spray haze removal; finally, based on the critical droplet content obtained from the experiment, an effective control range is obtained from the simulation results of the mesoscale spray droplet evolution prediction model. The measuring method can quickly and efficiently obtain the effective haze removal range under the specific nozzle performance and layout mode, and provide support and layout optimization for the spray haze removal process.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method for measuring the effective range of spray haze removal. Background technique [0002] Since the emergence of severe smog in 2008, many cities in China are facing increasingly serious smog pollution problems, which not only seriously affect human health, but also bring huge direct and indirect economic losses to the country. In recent years, a large number of spray-based haze removal methods have emerged, providing us with the possibility to reduce haze pollution within a certain range. However, unreasonable spray methods or layouts not only cannot make full use of the advantages of spray technology, but also cause extreme A large waste of cost may even interfere with each other, thereby weakening the effect of haze removal. [0003] At present, there is an urgent need to develop a mesoscale prediction model for predicting and evaluating the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 王正师李树民贾淑敏赵凡李雨芮周子尧
Owner CALCULATION AERODYNAMICS INST CHINA AERODYNAMICS RES & DEV CENT
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