Dielectric Liquid Cooling for High-Power LED Photochemical Reactors
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Solution Overview
Problem
High-power LEDs used in photochemical reactions face inefficiencies in cooling systems, leading to heat management issues and increased energy consumption, making them unsuitable for large-scale applications due to bulkiness and safety concerns.
Innovation Solution
A lighting device with a transparent housing containing a dielectric liquid in direct contact with the LED unit, utilizing a liquid movement arrangement to efficiently transport heat away from the LED, reducing the need for elaborate cooling systems and enhancing safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional cooling systems (air or water based) are used to cool high-power LEDs in large-scale photochemical production, then heat can be transported away from the LED, but the cooling systems become very large and bulky, making them unsuitable for available production spaces
Solution Approach 1:
The patent applies hydraulic cooling by using a dielectric liquid instead of conventional air or water cooling systems. The liquid cooling medium flows directly over the LED chip and circuit board, enabling efficient heat transport in a compact configuration. This hydraulic approach replaces bulky air-based cooling with a space-efficient liquid circulation system that maintains effective heat removal while dramatically reducing system volume.
Solution Approach 2:
The patent introduces a dielectric liquid as an intermediary substance between the LED heat source and the cooling system. This intermediate liquid medium serves dual purposes: it efficiently conducts heat away from the LED and circuit board while also providing electrical insulation. The dielectric liquid acts as a mediator that enables compact heat transfer without requiring large cooling infrastructure.
2Use of energy by moving object
If high-power LEDs are used to provide light for photochemical reactions, then energy consumption is reduced compared to xenon or mercury lamps, but heat production still occurs requiring cooling systems
Solution Approach 1:
The patent converts the harmful heat byproduct into a manageable parameter by using the dielectric liquid to absorb and transport the heat away from the LED. The heat that would otherwise damage the LED or require elaborate cooling is instead efficiently carried away by the circulating liquid, transforming a harmful thermal effect into a controllable cooling process.
Solution Approach 2:
The patent changes the thermal management approach by transitioning from passive or air-based cooling to active liquid cooling with a dielectric medium. This parameter change in the cooling method enables better heat control, allowing the LED to operate at lower temperatures while maintaining reduced energy consumption compared to traditional lighting sources.
3Temperature
If conventional cooling systems are used with high-power LEDs, then heat can be removed, but the systems require elaborate shielding and explosion protection, increasing device complexity
Solution Approach 1:
The dielectric liquid serves as a protective intermediary between the electrical components and the cooling system. Its electrical insulation properties eliminate the need for elaborate shielding and explosion protection that would be required with conventional water-based cooling systems. The dielectric liquid mediates both heat transfer and electrical isolation, simplifying the overall device architecture.
Solution Approach 2:
The dielectric liquid creates an electrically inert environment around the LED and circuit board, similar to how an inert gas atmosphere protects against chemical reactions. This inert liquid environment eliminates electrical hazards and removes the need for complex shielding and explosion protection systems, reducing device complexity while maintaining effective heat removal.
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 solution provides effective and safe long-term operation of LEDs in photochemical reactions by improving heat management, reducing energy consumption, and eliminating the need for bulky cooling systems, thus enabling their use in large-scale processes.
Implementation Method 1
the dielectric liquid transports heat produced by the LED unit away from the LED unit
Data Source
AI summary
The invention relates to a lighting device, to the use of the lighting device in a photochemical reaction, to a photochemical reactor and to a method used by the lighting device. The lighting device 100 comprises an LED unit 110 configured to emit light 114 to be used in the photochemical reaction, a housing 120 configured to house the LED unit, wherein at least a part of the housing is transparent for light to be used in the photochemical reaction, wherein the housing is configured to contain a dielectric liquid transparent for light generated by the LED unit such that it is in direct contact with at least a part of the light emitting side of the LED unit, and a liquid movement arrangement 130 configured to support a movement of the dielectric liquid such that the dielectric liquid transports heat produced by the LED unit away from the LED unit.