Hydroxyl Radical Generator for Transit Air Decontamination
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Solution Overview
Problem
Existing methods for producing atmospheric hydroxyls in HVAC systems are limited, as they rely on ultraviolet light that cannot penetrate crevices and is not effective in closed air systems, failing to neutralize pathogens and VOCs in human-occupied spaces like aircraft, vehicles, and buildings.
Innovation Solution
A harmonic bio-mimicry nonchemical process using ambient water vapor and medical-grade pure quartz UV optics to generate hydroxyl radicals within a polygonal reaction chamber, which can penetrate crevices and neutralize pathogens and VOCs by emitting UV irradiation between 100 and 400 nanometers, producing 2.6 million hydroxyls per cubic centimeter, similar to natural rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ultraviolet light is used for sanitation, then germicidal effect is achieved, but penetration capability into crevices and fabrics is insufficient
Solution Approach 1:
The patent introduces hydroxyl radicals as an intermediary substance that is generated by UV irradiation of water vapor. These radicals serve as the active germicidal agent, allowing the system to achieve sanitation without direct UV exposure to protected areas. The hydroxyl radicals act as mediators that can penetrate into crevices and fabrics where direct UV light cannot reach, while still providing effective pathogen neutralization.
Solution Approach 2:
The patent replaces direct mechanical UV light application with a chemical intermediary approach. Instead of using UV light directly to kill pathogens (mechanical/optical method), the system uses UV to generate hydroxyl radicals from water vapor, which then chemically react with and neutralize pathogens. This substitution allows the germicidal function to be achieved through chemical action rather than direct optical exposure.
2Reliability
If direct UV light exposure is applied, then pathogen neutralization occurs, but fabric damage and safety hazards increase
Solution Approach 1:
Hydroxyl radicals serve as intermediaries that transfer the germicidal function from UV light to pathogens without requiring direct UV exposure. The radicals are generated in the air stream and then contact pathogens on surfaces, fabrics, and in crevices, achieving pathogen neutralization while eliminating the harmful direct UV exposure to fabrics and occupied spaces.
Solution Approach 2:
The patent extracts the germicidal function from the UV light itself and transfers it to hydroxyl radicals. By taking out the active sanitizing component (germicidal action) from the UV source and embedding it in freely moving hydroxyl radicals, the system achieves pathogen neutralization without the harmful side effects of direct UV exposure to fabrics and materials.
3Reliability
If ultraviolet light is delivered for sanitation, then surface decontamination is achieved, but line of sight limitations reduce effectiveness
Solution Approach 1:
The hydroxyl radicals are generated in the air stream and move autonomously through the environment, seeking out and neutralizing pathogens on surfaces, in crevices, and on fabrics. The radicals self-propagate through diffusion and convection, eliminating the need for directed line-of-sight exposure. The system serves itself by generating radicals that automatically distribute throughout the space and contact all surfaces.
Solution Approach 2:
Hydroxyl radicals act as mobile intermediaries that carry the decontamination function throughout the environment. Unlike stationary UV sources limited by line of sight, the radicals move freely through air, penetrate fabrics, and reach into crevices, providing comprehensive surface decontamination without geometric limitations.
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
Effectively neutralizes pathogens and VOCs in closed air systems, including aircraft and building environments, by generating reactive hydroxyl radicals that can reach and decontaminate surfaces and air impurities, enhancing air quality and safety without direct UV exposure hazards.
Implementation Method 1
The feed stock is ambient water vapor in air which will have relative humidity, this humidity is the feed stock for the reaction chamber to produce the atmospheric hydroxyl. This action is called 'Bio-Mimicry'. The present invention process is a totally green, environmentally friendly nonchemical process that results in the export of the desired atmospheric hydroxyl at precisely the same rate as nature provides
Implementation Method 2
The atmospheric hydroxyl process begins by exposing ambient water vapor to special UV optics having hydroxyl activation portions made of medical grade pure quartz material. The optics are designed to emit/irradiate Ultraviolet irradiation in the nanometer wavelength/Ultraviolet spectrum of between 100 and 400 nanometers, thereby producing the hydroxyls at the aforementioned quantity of 2.6 million hydroxyls per cubic centimeter
Data Source
AI summary
A system for decontaminating/neutralizing breathable air and surfaces in an occupied enclosed space, i.e., hydroponic greenhouses, aircraft, rail and road vehicles, in building ducts, or rooms, includes mounting an atmospheric hydroxyl radical generator along an inside surface of an occupied space having respective air inlets and air outlets. The hydroxyl radical generator includes a polygonal housing supporting a plurality of spaced crystal-spliced UV optics medical grade pure quartz, which emit/irradiate ultraviolet in the nanometer wavelength/ultraviolet spectrum of between 100 and 400 nanometers for deactivating and neutralizing atmospheric chemicals and pathogens in breathable air and surfaces. The hydroxyl radicals contact the walls of the reaction chamber housing. The hydroxyl radicals become created and excited to react quickly with impurities including VOC, virus, bacteria and fungi, rendering them inactivated and neutral. The breathable air passes through the polygonal housing and is decontaminated and neutralized of impurities before entering the occupied enclosed space.