Electronic System Heat Exchanger Venturi Leak Prevention
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Solution Overview
Problem
Conventional cooling systems for computer servers face issues with fluid leaks causing damage to components, as the fluid can escape and come into contact with the components due to pressure imbalances, leading to potential damage and system disruption.
Innovation Solution
A heat exchanger system utilizing a Venturi tube to maintain reduced pressure within the flow circuits, preventing fluid escape in case of leaks and incorporating leak detection mechanisms, such as pressure and ultrasonic sensors, to alert operators and maintain system operation until repairs can be made.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a liquid cooling system is used to remove heat from electronic components, then cooling efficiency is improved, but the risk of fluid leakage onto components increases
Solution Approach 1:
The system applies preliminary anti-action by maintaining negative pressure throughout the cooling circuit, which prevents fluid from leaking onto components. The pressure sensor detects pressure changes that indicate leaks, and the controller responds by adjusting pump operation to maintain the protective negative pressure condition, counteracting the harmful effect before it can cause damage.
Solution Approach 2:
The system converts the potential harm of fluid leakage into a benefit by using the pressure differential (negative pressure) to actually prevent leakage. The same pressure condition that could allow inward contamination now actively prevents outward leakage of cooling fluid, turning a potential problem into a protective mechanism.
2Reliability
If pump pressure is reduced below atmospheric pressure to prevent fluid leakage, then fluid containment is improved, but air may be drawn into the system through leaks
Solution Approach 1:
The system uses feedback through pressure sensors that continuously monitor the pressure within the cooling circuit. When a leak is detected (pressure change), the controller receives this feedback and adjusts pump operation accordingly. This closed-loop control allows the system to maintain negative pressure for containment while responding to air ingress conditions by modifying pump speed or operation mode.
Solution Approach 2:
The system applies dynamics by making the pump operation variable rather than fixed. The controller adjusts pump speed and operation dynamically based on real-time pressure sensor readings, allowing the system to adapt to changing conditions such as leak detection or air ingress, optimizing both containment and preventing harmful effects.
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 contains fluid within the flow circuits during leaks, minimizing damage to components and allowing continued operation with minimal cooling efficiency loss, enabling scalable thermal control for multiple computational equipment without additional local pumps.
Implementation Method 1
A heat exchanger system utilizing a Venturi tube to maintain reduced pressure within the flow circuits
Implementation Method 2
The removal of heat may be achieved by passing a liquid through a network of tubes in close proximity to the various components to extract the heat
Data Source
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AI summary
An electronic system is disclosed comprising an electronic device and a heat exchanger for exchanging heat with the device. The heat exchanger comprises a flow duct for receiving a fluid, at least a portion of the flow duct being arranged in thermal communication with the device. The system further comprising means for reducing the pressure of the fluid in the portion of the flow duct to a value less than the pressure external to the duct, to minimise any leakage of the fluid onto the device in the event the portion of the flow duct develops a leak.