Method for installing air atomizing nozzle of sprinkler system at refrigeration station based on Fluent software

A spray system and air atomization technology, which is applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of installation conditions that do not consider the position and quantity of nozzles, and the lack of scientific data of nozzle working parameters, etc., to achieve Intuitive results

Inactive Publication Date: 2016-09-07
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that the installation conditions of location and quantity are not considered when installing nozzles in the existing refrigeration station,

Method used

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  • Method for installing air atomizing nozzle of sprinkler system at refrigeration station based on Fluent software
  • Method for installing air atomizing nozzle of sprinkler system at refrigeration station based on Fluent software
  • Method for installing air atomizing nozzle of sprinkler system at refrigeration station based on Fluent software

Examples

Experimental program
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Effect test

Example Embodiment

Specific embodiment one:

[0044] The method of installing the air atomizing nozzle of the refrigeration station spray system based on the Fluent software of this embodiment combines figure 1 As shown in the flow chart of the simulation method, the method includes the following steps:

[0045] Step 1. Set the physical model parameters in the refrigeration station according to the actual situation: the size of the physical prototype, the nozzle position, the distance between the nozzles, the working pressure of the spray system and the nozzle spray angle;

[0046] Among them, the physical prototype refers to the refrigeration station spray system to be installed with air atomization nozzles;

[0047] Step 2: Construct a custom function based on the physical model parameters in the refrigeration station determined in Step 1:

[0048] 1) According to the functional relationship between the nozzle outlet working pressure of the spray system and the droplet size, construct a custom function ...

Example Embodiment

Specific implementation manner two:

[0075] The difference from the first embodiment is that the method for installing the air atomizing nozzle of the spray system of a refrigeration station based on the Fluent software of this embodiment is a function of the nozzle outlet working pressure and the droplet size of the spray system described in step 2. The relationship is:

[0076] r = d i ΔP 0.37 s i n α 2

[0077] Where d i Is the nozzle outlet diameter, in meters; ΔP is the nozzle outlet pressure, in Pa; α is the nozzle angle, α=90°.

Example Embodiment

Specific implementation manner three:

[0078] The difference from the first or second embodiment is that the method for installing the air atomizing nozzle of the spray system of the refrigeration station based on the Fluent software of this embodiment, in the characteristics of the chemical reaction between ammonia and water in the second step, the ammonia involved The relationship between gas and water chemical reaction rate is:

[0079] N A = 0.75 Sc 1 / 3 Re G 1 / 2 D A B d p R T ( P - P * )

[0080] Where: N A Represents the absorption rate of ammonia; Sc is the Schmidt criterion; Re G Is the Reynolds number, dimensionless; D AB Indicates the diffusion coefficient D of ammonia in the air AB , The unit is m 2 / s; d p Represents the droplet size; P represents the partial pressure of the gas phase; p * Represents the partial pressure of the gas phase in equilibrium with the concentration of th...

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Abstract

The invention discloses a method for installing an air atomizing nozzle of a sprinkler system at a refrigeration station based on Fluent software, and relates to an emulation numerical simulation method for the nozzle arrangement of a sprinkler system at a refrigeration station. The invention mainly aims to solve the problems that installation conditions of the location and the number are not taken into consideration in the nozzle arrangement at the refrigeration station and there is a lack of necessary scientific data for nozzle operating parameters. The invention includes a first step of constructing a self-defined function; a second step of establishing a refrigeration station building model through an ICEM and dividing a grid to generate a file in an MSH format; a third step of importing the MSH file into Fluent software, and detecting the quality of the grid; a fourth step of setting solving conditions; a fifth step of solving the iteration; and a sixth step of analyzing the result. The invention is suitable for emulation simulation of the nozzle arrangement of the sprinkler system at the refrigeration station. Applying the result in the invention to the actual production process can not only save the economic cost, but also have the sprinkler system achieve an optimal control effect of ammonia leakage accidents.

Description

technical field [0001] The invention relates to a method for installing an air atomizing nozzle of a spray system of a refrigeration station based on Fluent software. Background technique [0002] The technology of absorbing leaked ammonia gas by spraying system is widely used in the current chemical industry production process. Generally, a spraying system is installed above the ammonia storage tank in the refrigeration station, and the leakage area is purified and absorbed by the method of water spraying. This method is Utilizing the characteristic that ammonia gas is very soluble in water, through the optimization of various working parameters of the nozzle, the optimization can effectively improve the absorption efficiency of the spray system. [0003] The atomizing spray system is mainly composed of nozzles, pneumatic system, and hydrodynamic system, including air compressors, water storage tanks, delivery pumps, pipelines and related control systems. Among them, the n...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 蒋永清宗妍孙超王博李存海孙大伟迟长宇陈东旭罗若男
Owner HARBIN UNIV OF SCI & TECH
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