Enclosed Condenser for Liquid Immersion Cooling Pressure Control
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Solution Overview
Problem
Conventional liquid immersion cooling systems for servers face pressure issues due to uncondensed coolant vapor accumulation, leading to rising internal pressure and inadequate cooling, especially when the condensing device is not capable of handling the vapor load efficiently, resulting in potential server damage.
Innovation Solution
A one-chambered constant pressure apparatus with an enclosed-type condensing device featuring symmetrical, inclined condensing plates that form an inverted V-shape, allowing complete condensation of rising coolant vapor without passing through condensing components, maintaining constant pressure and ensuring reliable cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If an open-type condensing device is used, then the structure is simple and easy to manufacture, but coolant vapor accumulates and system pressure rises
Solution Approach 1:
The condensing device is divided into multiple condensing plates arranged in series, creating multiple condensing stages. This segmentation allows vapor to be condensed progressively as it passes through each plate, improving condensation efficiency while maintaining a relatively simple overall structure that is easier to manufacture than a fully enclosed complex system.
Solution Approach 2:
The patent introduces a vertical dimension to the condensing process by arranging condensing plates in a stacked configuration with spacing between them. This three-dimensional arrangement allows vapor to rise and contact multiple condensing surfaces sequentially, enhancing condensation capacity without significantly increasing the horizontal footprint or manufacturing complexity.
2Device complexity
If the condensing device cooling capacity is insufficient, then the structure can be simpler, but vapor cannot be condensed completely and pressure increases
Solution Approach 1:
The multiple condensing plates are arranged to provide continuous condensation action as vapor rises through the chamber. Each plate continuously condenses vapor that contacts it, creating an ongoing condensation process rather than a single-stage intermittent action. This ensures complete vapor condensation even with individual plates of moderate cooling capacity.
Solution Approach 2:
Different condensing plates can be positioned at different locations within the vapor path, with each plate providing localized condensation capability. This allows the system to distribute the total condensation load across multiple locations, ensuring that no single plate is overwhelmed and complete condensation is achieved throughout the chamber.
3Device complexity
If coolant vapor is not completely condensed, then the condensing device can be simpler, but system pressure rises and cooling efficiency decreases
Solution Approach 1:
The system utilizes the phase transition of coolant from vapor to liquid across multiple condensing plates. By arranging plates in a sequence that maximizes vapor-liquid heat exchange, the system efficiently captures the latent heat of condensation at each stage, ensuring complete phase transition and maintaining high cooling productivity without requiring an overly complex device structure.
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 apparatus effectively maintains constant pressure and sustains cooling capacity by ensuring complete condensation of coolant vapor, preventing pressure buildup and ensuring reliable operation and efficient heat transfer.
Implementation Method 1
an evaporative cooling is a process in which a heat load is removed by the latent heat of vaporization occurring when a non-conductive coolant absorbs heat and then evaporates
Implementation Method 2
the latent heat of vaporized liquid is much larger than the specific heat of liquid, the evaporative cooling has a more significant effect on the cooling than the liquid cooling
Implementation Method 3
the condensing device can condense the vapor phase of the coolant to the liquid phase
Data Source
AI summary
The present invention discloses a one-chambered constant pressure apparatus for liquid immersion cooling of servers, which are submerged within a non-conductive coolant maintained in the apparatus. When servers start to operate, a large amount of heat will be dissipated from servers. The coolant is vaporized into a coolant vapor by absorbing heat dissipated from servers, which enables servers to be cooled. The coolant vapor is condensed into a cooling liquid by a condenser. However, in the process of condensation, the rising coolant vapor tends to scatter in all directions resulting in a failure to condense all of the coolant vapor. Therefore, the uncondensed coolant vapor will cause the pressure in the apparatus to gradually rise, which eventually leads to the ineffective cooling of servers. In view of this problem, the disclosed invention provides an enclosed-type condenser for completely condensing all of the coolant vapor, thereby maintaining the constant pressure in the apparatus and ensuring the reliability of the apparatus during operation and the sustainability of the cooling capacity thereof.