Compressed Air Artificial Wind System Laval Nozzle Design

Solution Overview

Problem

Current technologies face challenges in generating artificial wind on a large scale using high/ultra-high pressure compressed air due to high production costs and inefficiencies, as well as limitations in effectively dispersing pollutants and fighting forest fires, with existing solutions like retired jet engines being costly and inefficient.

Innovation Solution

A compressed air artificial wind system comprising a storage device, discharge device with a Laval nozzle, and controller, which utilizes high/ultra-high pressure compressed air to generate high-speed airflow for meteorological control, forest firefighting, and coastal defense, efficiently producing artificial wind by leveraging the pressure difference and the acceleration capabilities of the Laval nozzle.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If high/ultra-high pressure compressed air is used to generate artificial wind, then wind speed and wind force are improved, but production cost increases due to high energy consumption

Engineering Contradiction:

Improvewind speedVSAvoidenergy consumption

Core Design Contradiction:

SpeedVSUse of energy by moving object

Solution Approach 1:

The system pre-compresses air to high/ultra-high pressure and stores it in storage tanks before actual use. This preliminary compression allows the system to generate artificial wind quickly when needed without consuming energy at the moment of deployment, resolving the contradiction between achieving high wind speed and reducing energy consumption.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The invention extracts and stores the energy-intensive compression process separately from the wind generation process. By pre-compressing and storing air in tanks, the system separates the energy consumption phase from the utility delivery phase, allowing high wind speed generation without real-time energy consumption.

Inventive Principle:

Principle #2Taking out (Extraction)

2Force

If large quantity of compressed air is produced to generate strong artificial wind, then wind force is improved, but production cost increases due to high energy consumption

Engineering Contradiction:

Improvewind forceVSAvoidenergy consumption

Core Design Contradiction:

ForceVSUse of energy by moving object

Solution Approach 1:

The system pre-compresses air to high/ultra-high pressure and stores it in storage tanks before actual use. This preliminary compression allows the system to generate artificial wind quickly when needed without consuming energy at the moment of deployment, resolving the contradiction between achieving high wind speed and reducing energy consumption.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The invention extracts and stores the energy-intensive compression process separately from the wind generation process. By pre-compressing and storing air in tanks, the system separates the energy consumption phase from the utility delivery phase, allowing high wind speed generation without real-time energy consumption.

Inventive Principle:

Principle #2Taking out (Extraction)

3Productivity

If retired jet engines are used to disperse pollutants, then air flow capability is improved, but cost and noise increase

Engineering Contradiction:

Improvepollutant dispersal capabilityVSAvoidcost

Core Design Contradiction:

ProductivityVSEase of manufacture

Solution Approach 1:

The system uses inexpensive compressed air storage tanks and simple discharge valves instead of expensive retired jet engines. The compressed air system provides sufficient air flow capability for pollutant dispersal at a fraction of the cost of jet engine deployment, resolving the contradiction between productivity and ease of manufacture.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The invention employs pneumatic principles by using stored compressed air to generate artificial wind for pollutant dispersal. This pneumatic approach replaces the complex mechanical jet engine system with a simpler, cheaper compressed air discharge system that achieves the same productivity goal.

Inventive Principle:

Principle #29Pneumatics and hydraulics

4Productivity

If high-speed airflow is used to spray extinguishing agents, then firefighting efficiency is improved, but system complexity increases

Engineering Contradiction:

Improvefirefighting efficiencyVSAvoidsystem complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The compressed air system serves multiple functions: it generates artificial wind for meteorological control, disperses pollutants, and sprays extinguishing agents for firefighting. By using a single compressed air storage and discharge system for multiple purposes, the invention improves firefighting efficiency without proportionally increasing system complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The stored compressed air acts as an intermediary that enables efficient extinguishing agent delivery. The high-speed airflow from the compressed air system atomizes and propels extinguishing agents effectively, achieving improved firefighting efficiency while keeping the system relatively simple through the use of existing compressed air infrastructure.

Inventive Principle:

Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The system achieves high-speed and large-quantity artificial wind with reduced production costs, effectively dispersing pollutants, and enhancing firefighting capabilities by using the high-speed airflow to rapidly expand and cool extinguishing agents, thereby improving firefighting efficiency and military defense strategies.

Implementation Method 1

the larger the pressure difference, the higher the wind speed. Air flows from high to low pressure

Methodology Applied

Scientific EffectPressure gradient: Pressure Gradient

Implementation Method 2

the second end of the expansion chamber is communicated with the first end of the Laval nozzle... the Laval nozzle is used for accelerating the compressed air

Methodology Applied

Scientific EffectLaval nozzle acceleration: De Laval Nozzle

Implementation Method 3

the compressed air is communicated with the first end of the expansion chamber... the expansion chamber is used for expanding the compressed air

Methodology Applied

Scientific EffectGas expansion:

Implementation Method 4

the high-speed airflow to rapidly expand and cool extinguishing agents

Methodology Applied

Scientific EffectAdiabatic cooling: Adiabatic Cooling

Data Source

PatentEP3600573B1A compressed air artificial wind system, firefighting equipment and method thereof

Publication Date: 2023.03.29 WANG LIFENG

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Figure 3a~3b

AI summary

The present invention provides a compressed air artificial wind system including compressed air storage device, compressed air discharge device, artificial wind system base and controller; also a firefighting equipment including an extinguishing agent tank and the compressed air artificial wind system. The compressed air storage device includes row tubes and manifolds for production and storage of high/ultra-high pressure compressed air; the compressed air discharge device includes intake pipe, expansion chamber, Laval nozzle and wind-blowing tube; the artificial wind system base is built as an infrastructure. Large quantity of high/ultra-high pressure compressed air under control from the compressed air storage device and through the compressed air discharge device to spray out generating artificial wind with large air volume and high wind speed for meteorological control, forest firefighting, air defence and coastal defence, respectively.