UV Transparent Conduit Reflective Coating for Disinfection Efficiency
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Solution Overview
Problem
Existing ultraviolet liquid disinfection systems are inefficient due to the absorption of UV light by metallic chambers, leading to suboptimal utilization of the UV light source.
Innovation Solution
A UV disinfection system featuring a UV-transparent conduit with a reflective coating on its exterior surfaces, allowing UV light to be internally reflected and maintaining its intensity within the liquid, thereby enhancing disinfection efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metallic chamber is used to house the UV light source, then structural strength and protection are improved, but UV light absorption increases and disinfection efficiency deteriorates
Solution Approach 1:
A UV-transparent sleeve made of quartz or glass is introduced as an intermediary between the UV light source and the metallic chamber. This sleeve allows UV light to pass through while providing a barrier between the light source and the metal, preventing direct contact and absorption. The metallic chamber still provides structural protection, but the transparent sleeve ensures UV light reaches the liquid effectively.
Solution Approach 2:
The housing structure is divided into separate functional components: a metallic outer chamber for structural strength and protection, and an inner UV-transparent sleeve for light transmission. This segmentation allows each component to fulfill its specific function without interfering with the other, resolving the contradiction between structural integrity and light transmission.
2Reliability
If UV light source is positioned within a metallic chamber, then protection and stability are improved, but light utilization efficiency deteriorates
Solution Approach 1:
The UV-transparent sleeve acts as a mediator that protects the UV light source from direct contact with metallic surfaces while allowing UV light to transmit through to the liquid. This intermediary structure maintains the stability and protection benefits of a metallic chamber while enabling effective light utilization.
Solution Approach 2:
The UV-transparent sleeve is made of materials like quartz or glass that are transparent to UV radiation, effectively changing the optical property of the housing from UV-absorbing (metallic) to UV-transparent. This allows the system to maintain structural protection while improving light transmission and utilization efficiency.
3Strength
If metallic walls are used in the chamber, then structural integrity is improved, but UV light transmission and disinfection effectiveness deteriorates
Solution Approach 1:
The housing is segmented into a metallic outer structure for structural integrity and an inner UV-transparent sleeve for light transmission. This segmentation allows the metallic walls to provide structural support while the transparent sleeve ensures UV light reaches the liquid with high intensity, resolving the contradiction between structural integrity and light transmission.
Solution Approach 2:
The UV-transparent sleeve serves as an intermediary layer between the metallic chamber walls and the UV light source. It transmits UV light effectively while being positioned within the metallic structure, allowing the metallic walls to maintain structural integrity without blocking UV light transmission.
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 improved disinfection efficiency by ensuring that a significant portion of the UV light is reflected back into the liquid, increasing the UV dose distribution and enhancing the inactivation of microorganisms within the liquid.
Implementation Method 1
a UV disinfection system featuring a UV-transparent conduit with a reflective coating on its exterior surfaces, allowing UV light to be internally reflected and maintaining its intensity within the liquid
Data Source
AI summary
A UV disinfection system and methods of UV disinfection are provided. The disinfection system may include a UV transparent conduit to carry a flowing liquid to be disinfected, the conduit having an inlet to receive the liquid and an outlet to discharge the liquid and two or more radiation sources positioned within the conduit substantially perpendicular to the axis of symmetry of the conduit. The walls of the conduit may be coated with a reflective coating acting as a back-surface mirror for enhancing the performance of the disinfection system.