Mobile Electro-Spray Cloud Seeding With Charged Droplets
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Solution Overview
Problem
Existing cloud seeding technologies face challenges such as high operational and capital costs, environmental concerns, and inefficiencies related to the use of heavy equipment and seeding media, particularly in airborne applications, and the need for improved methods to enhance precipitation formation through cloud particle electrification.
Innovation Solution
An apparatus for mobile electro-spray cloud seeding using inductive electro-spray nozzles to produce charged droplets of 5-15 µm diameter from a hygroscopic or glaciogenic liquid, which are dispersed by drones, balancing positive and negative charges to avoid carrier charge accumulation, enhancing collision-coalescence and ice production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional cloud seeding methods are used, then precipitation formation can be enhanced, but operational costs and capital costs increase significantly
Solution Approach 1:
The patent replaces traditional mechanical dispersal systems (ground-based generators, airborne dispensers) with an electrostatic field-based system. High-voltage electrodes generate strong electric fields that automatically charge and propel seeding droplets into clouds, eliminating the need for complex mechanical delivery infrastructure and reducing operational costs.
Solution Approach 2:
The patent changes the physical state and properties of seeding materials by charging them with high-voltage electric fields. This electrostatic charging modifies droplet behavior, enabling them to be accelerated and dispersed more efficiently into target clouds, thereby enhancing precipitation formation while reducing the amount of seeding material required.
2Productivity
If traditional cloud seeding equipment is deployed, then cloud seeding can be performed, but device complexity and equipment weight increase
Solution Approach 1:
The patent extracts the core seeding function from complex mechanical delivery systems and isolates it in simple electrostatic charging chambers. The essential function of introducing seeding material into clouds is separated from the complex infrastructure of traditional systems, leaving only the fundamental electrostatic propulsion and charging mechanisms.
Solution Approach 2:
The electrostatic field system is self-regulating and automatically controls droplet charging and propulsion. The high-voltage electrodes create electric fields that naturally accelerate charged droplets toward cloud regions without requiring external control mechanisms, reducing device complexity while maintaining cloud seeding capability.
3Productivity
If conventional seeding media are used, then cloud seeding effectiveness is achieved, but environmental harm and pollution occur
Solution Approach 1:
The patent changes the chemical composition parameter of seeding materials by using naturally occurring substances (rock salt, iodine, silver iodide) in their original forms rather than processed powders. This approach maintains seeding effectiveness while eliminating the environmental pollution associated with traditional chemical processing and aerosol generation methods.
4Productivity
If charged droplets are used for cloud seeding, then collision-coalescence and ice production are enhanced, but charge accumulation on carrier may occur
Solution Approach 1:
The patent inverts the traditional approach by charging the seeding droplets themselves rather than charging the carrier vehicle. High-voltage electrodes located on the carrier charge individual droplets as they pass through, allowing the droplets to carry their own charge into the cloud without transferring charge to the carrier, thus maintaining carrier charge stability while enhancing precipitation formation.
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 apparatus efficiently promotes precipitation formation by leveraging electrostatic forces, reducing operational costs, minimizing environmental impact, and overcoming limitations of traditional seeding methods, particularly in warm and mixed-phase clouds.
Implementation Method 1
at least one extractor electrode arranged adjacent to said nozzle, for charging said ejected droplets
Implementation Method 2
An apparatus for mobile electro-spray cloud seeding using inductive electro-spray nozzles to produce charged droplets
Implementation Method 3
enhancing collision-coalescence and ice production
Data Source
Figure 1~2
Figure 3~4(b)
Figure 5~6
AI summary
It is disclosed an apparatus for mobile electro-spray cloud seeding, comprising a storage tank (3, 4), at least one nozzle (25, 26), which is connected to said storage tank (3,4) through a pipe and / or hose (7, 8), and at least one high-voltage direct current source (14, 15) for charging droplets ejected from said nozzle (25, 26).