Immersion Cooling Reservoir Level Control With Thermal Feedback
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Solution Overview
Problem
Immersion cooling systems face challenges in maintaining uniform coolant levels across multiple racks, leading to risks of overflow or insufficient cooling due to varying coolant flow rates, which can cause overheating and damage to components.
Innovation Solution
A unified coolant distribution system with temperature and level sensors, along with adjustable release valves, dynamically regulates coolant levels in each tank based on average temperature measurements to maintain equal levels across all tanks, using a central controller or independent controllers for backup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single pump and heat exchanger are used to cool multiple racks with a shared coolant distribution system, then resource utilization is improved, but coolant level differences between racks occur leading to overflow or insufficient cooling risks
Solution Approach 1:
The system employs level sensors in each rack to detect coolant levels and feeds this information back to a controller. The controller adjusts flow distribution dynamically based on real-time level data, ensuring each rack maintains appropriate coolant levels while allowing different cooling rates. This closed-loop feedback mechanism resolves the contradiction by enabling adaptive control that prevents overflow and insufficient cooling risks.
Solution Approach 2:
The system transitions from static coolant flow distribution to dynamic adjustment. Flow control valves in each rack are dynamically regulated based on real-time coolant level measurements and cooling demands. This dynamic control allows the system to adapt cooling rates for different racks while maintaining reliable coolant levels, resolving the contradiction between versatility and reliability.
2Adaptability or versatility
If coolant flow rates are varied to cool different racks at different rates, then cooling adaptability is improved, but coolant level differences arise causing overflow or air intake risks
Solution Approach 1:
Level sensors continuously monitor coolant levels in each rack and provide feedback to the control system. When a rack approaches overflow or air intake risk levels, the sensor signals the controller to adjust flow rates accordingly. This feedback mechanism enables the system to maintain different cooling rates while preventing harmful effects like overflow and air intake.
Solution Approach 2:
The system takes preliminary anti-action by detecting coolant level trends before overflow or air intake occurs. The level sensors anticipate potential problems and trigger flow rate adjustments in advance, preventing the harmful effects rather than reacting after they occur. This proactive approach resolves the contradiction by enabling safe adaptive cooling.
3Reliability
If coolant is pumped from the bottom of tanks to avoid air intake, then air intake risk is reduced, but complete draining risk increases due to potential valve or duct failure
Solution Approach 1:
The system implements beforehand cushioning by maintaining a minimum coolant level buffer in each rack and monitoring it closely. The control system anticipates potential valve or duct failures and adjusts flow rates to preserve this buffer, preventing complete draining. This proactive cushioning approach resolves the contradiction by protecting against both air intake and complete draining risks.
Solution Approach 2:
Level sensors provide continuous feedback on coolant levels, enabling the control system to detect when levels approach critical thresholds. Upon detecting potential complete draining risk, the system adjusts flow rates to maintain safe levels, preventing both air intake and complete draining. This feedback mechanism resolves the contradiction between the two 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
Ensures consistent coolant levels, preventing overheating and air intake, thereby safeguarding components and maintaining efficient cooling across multiple racks.
Implementation Method 1
a first temperature sensor configured to measure a temperature of the coolant in a first reservoir, a second temperature sensor configured to measure a temperature of the coolant in a second reservoir
Implementation Method 2
The first coolant level detector may include an ultrasonic fluid level sensor
Implementation Method 3
The signaled at least one target coolant level update from the processor may be determined by converting the temperature average of the received temperature measurements to a density average of the coolant in the first reservoir and the second reservoir
Implementation Method 4
a first coolant release valve configured to regulate the release of coolant from the first reservoir, a second coolant release valve configured to regulate the release of coolant from the second reservoir
Data Source
AI summary
Various embodiments include first and second coolant level regulator components of first and second component cooling tanks and a processor. Each of the first and second coolant level regulator components may include a temperature sensor configured to measure a temperature of the coolant in a reservoir, a coolant release valve configured to regulate the release of coolant from the reservoir, and a coolant level detector configured to detect a level of the coolant in the reservoir. The processor may receive temperature measurements from the temperature sensors, signal a target coolant level update for adjusting a level of the coolant in the reservoir by the coolant release valve. The target coolant level update may be determined based on a temperature average of the received temperature measurements from the temperature sensors. The coolant release valve may adjust a release of the coolant from the reservoir based on the target coolant level update.