Side-stream Particle Precipitator for Cooling System Fouling
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Solution Overview
Problem
Industrial water cooling systems face challenges with contamination, corrosion, and fouling due to particulate and biological materials, which existing chemical treatments are unable to fully address, especially in closed-loop systems where chemical usage is limited by metal types and environmental regulations.
Innovation Solution
A multi-phase water treatment system combining electrostatic treatment with mechanical filtering, using a series of ionizers and high voltage electrodes to negatively charge the water, creating a breakdown in the laminar boundary and removing scale, slime, and corrosion from conduit surfaces, while also eliminating biologic materials, and a programmable logic controller to manage the treatment process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical treatments (dispersants, antifoulants, corrosion inhibitors) are used to prevent contamination and fouling, then the water system is protected from particulate and biological accumulation, but chemical usage is limited by metal types and environmental regulations, and chemical additives may cause additional corrosion or scale issues
Solution Approach 1:
The patent replaces chemical treatment systems with an electrostatic water treatment system. High voltage electrodes create an electrostatic field that charges water molecules and suspended particles, causing them to repel from conduit surfaces and remain in suspension. This mechanical/electrical substitution eliminates chemical additives while providing protection against contamination, fouling, and corrosion through physical electrostatic repulsion forces.
Solution Approach 2:
The patent changes the electrical parameter of water by applying high voltage (e.g., 10,000-50,000 volts) through electrodes immersed in the water stream. This parameter change imparts a negative charge to water molecules and suspended particles, fundamentally altering their interaction with conduit surfaces and each other, thereby preventing accumulation without chemicals.
2Reliability
If high voltage electrodes are used to negatively charge water and remove scale and corrosion, then thermal conductivity increases and conduit surfaces are cleaned, but energy consumption increases
Solution Approach 1:
The patent employs continuous electrostatic treatment by maintaining high voltage electrodes in the water stream throughout the cooling system. The electrodes continuously charge incoming water and particles, ensuring ongoing prevention of scale and corrosion buildup. This continuous action maintains thermal conductivity without requiring periodic chemical cleaning shutdowns, improving overall system efficiency despite the continuous energy input.
Solution Approach 2:
The electrostatic field creates self-cleaning effects where charged particles are repelled from surfaces and attracted to collection plates or remain in suspension for removal. The system automatically maintains clean conduit surfaces through electrostatic repulsion, eliminating the need for manual chemical cleaning interventions and reducing overall energy consumption compared to periodic chemical treatments and system shutdowns.
3Reliability
If electrostatic treatment is used to eliminate biologic materials and reduce particulate matter, then water quality improves and thermal efficiency increases, but the system complexity increases with multiple electrodes and control mechanisms
Solution Approach 1:
The patent designs the electrostatic water treatment system to perform multiple functions simultaneously: charging water molecules, repelling particles from surfaces, eliminating biological materials through electrostatic disruption, and preventing both scale and corrosion. This multi-functionality is achieved through a unified electrostatic field generation system, reducing overall system complexity compared to using separate chemical treatment systems for each function.
Solution Approach 2:
The patent places high voltage electrodes at specific locations within the cooling system where water flow and particle accumulation are most problematic. By concentrating electrostatic treatment at critical points rather than treating the entire system uniformly, the patent achieves effective water quality improvement and thermal efficiency enhancement with minimal electrode infrastructure, thereby reducing system complexity.
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 effectively reduces particulate and biological matter, increasing thermal conductivity and reducing water usage, with minimal chemical usage and longer electrode life, thus improving the efficiency and safety of water cooling systems.
Implementation Method 1
The series of high voltage low wattage electrodes are each situated along one or more conduits in the water cooling system to negatively charge the water complex. The negative charging creates a breakdown in the laminar boundary along the inner surfaces of the conduits in contact with the water complex such that the continuing flow will dislodge and remove scale, slime, and some corrosion from the conduit surfaces.
Implementation Method 2
The ionizers each contain a unique electrode for use in the substantial elimination of biologic materials in the form of aerobic and anaerobic organisms that are in solution in the water complex, control the regrowth of surface growing algae and slime, and impart a surface charge to any clump, coagulate or colloidal particulate or solid material.
Implementation Method 3
The resulting surface charge on the particulate or solid material results in particles in the range of 1-5 microns attracting one another so that such particles combine together resulting in particles of larger size.
Implementation Method 4
The series of mechanical precipitators through a tortuous pathway increase the relative time that the water complex remains within the precipitator, i.e., retention time, such that the particles of larger size can precipitate out of the water complex for later disposal.
Implementation Method 5
The series of mechanical precipitators through a tortuous pathway increase the relative time that the water complex remains within the precipitator
Data Source
AI summary
A side-stream particle precipitator system for the breakdown and removal of bio-materials and suspended solids in water cooling systems using a plurality of ionizer treatment units utilizing electric and electro-magnetic fields and a mechanical vortex precipitating system to remove particulate materials contained in the water complex as suspended solids. The system also uses high voltage electrodes for charging the water complex to breakdown laminar flow at the conduit walls to mechanically dislodge any build-up of bio-materials or chemical compounds along the walls resulting in an increase in thermal conductivity.