Bellows Assembly Venting for Immersion Cooling Pressure Control
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Solution Overview
Problem
In immersion cooling systems, the existing technologies face challenges in effectively managing pressure fluctuations and reducing coolant-liquid vapor release during overpressure events, which can lead to inefficiencies and increased operational costs.
Innovation Solution
A bellows assembly with a deformable polymer container that expands and contracts to regulate pressure, incorporating a port system and pressure-release valves to manage gas expansion and release, thereby reducing coolant-liquid vapor loss and maintaining system stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a rigid container is used for pressure regulation, then structural stability is maintained, but the ability to accommodate gas expansion and contraction is limited
Solution Approach 1:
The bellows assembly uses a flexible polymer container that can reversibly deform to expand and contract, accommodating gas volume changes during pressure fluctuations while maintaining structural integrity through the elastic properties of the polymer material
Solution Approach 2:
The container transitions from a static rigid structure to a dynamic flexible structure that can adapt its volume in response to pressure changes, allowing the system to respond to varying gas volumes during cooling operations
2Loss of substance
If pressure-release valves are added to reduce vapor release, then coolant-liquid vapor loss is reduced, but device complexity increases
Solution Approach 1:
The pressure-release valve extracts and releases excess pressure and vapor from the system selectively, allowing the bellows to maintain volume while preventing harmful pressure buildup and reducing vapor loss through controlled release
Solution Approach 2:
The pressure-release valve provides feedback control by monitoring system pressure and automatically releasing vapor when pressure exceeds thresholds, creating a self-regulating mechanism that reduces vapor loss without requiring external control systems
3Adaptability or versatility
If the container deforms freely under pressure, then gas expansion is accommodated, but external hinderance may prevent proper deformation
Solution Approach 1:
The container is segmented into multiple expandable sections or lobes that can deform independently, allowing the bellows to expand and contract smoothly while minimizing external hinderance and maintaining structural support during deformation
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 effectively regulates pressure in immersion cooling systems, minimizing coolant-liquid vapor release and maintaining system stability, thus enhancing efficiency and reducing operational costs.
Implementation Method 1
a flexible, polymeric wall that can deform outward from a center of the bellows and deform inward to change an amount of volume enclosed by the container
Implementation Method 2
The bellows pressure-relief vent(s) can be arranged to reduce an amount of coolant-liquid vapor released from the container during an overpressure event
Data Source
AI summary
A bellows assembly and related methods are described. The bellows assembly can be used in a two-phase immersion cooling system to regulate pressure in a tank's airspace above a coolant liquid. The bellows assembly can include a flexible container and pressure-release valves located to reduce emissions of coolant liquid vapor into an ambient environment.