Rack Door Condenser Layout for Flexible Two-Phase Server Cooling
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Solution Overview
Problem
Current cooling technologies for data centers and servers are inadequate for handling the intense heat loads generated by high-performance computing components, leading to inefficiencies, high costs, and safety risks, while traditional methods like air conditioning and water-based cooling introduce latency and corrosion issues.
Innovation Solution
A two-phase cooling system utilizing Enhanced Nucleation Evaporators (ENE), Heat Rejection Units (HRU), and Refrigerant Distribution Units (RDU) for direct-on-chip cooling, employing non-aqueous dielectric coolants to manage heat transfer and phase change without water, with integrated sensors and controllers for efficient coolant management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional water-based cooling techniques are used, then cooling effectiveness is improved, but corrosion, erosion, fouling, and residue risks increase
Solution Approach 1:
The patent introduces a non-aqueous dielectric coolant as an intermediary substance between the heat-generating electronic components and the heat dissipation system. This mediator transfers heat effectively while being chemically inert and non-corrosive, eliminating the harmful effects of traditional water-based coolants while maintaining cooling effectiveness.
Solution Approach 2:
The patent changes the fundamental parameter of the coolant from aqueous (water-based) to non-aqueous dielectric fluid. This parameter change transforms the chemical properties of the cooling medium, eliminating corrosion and residue issues while maintaining adequate heat transfer capabilities through proper selection of dielectric coolant properties.
2Temperature
If air conditioning units are installed inside data centers, then cooling capacity is improved, but costs increase significantly
Solution Approach 1:
The patent extracts the condensation and heat rejection functions from the indoor data center environment and relocates them to external heat rejection units. By taking out the condenser and placing it outside, the system eliminates the need for energy-intensive air conditioning units inside the data center, reducing operational costs while maintaining adequate cooling capacity.
Solution Approach 2:
The patent moves the heat rejection process from the horizontal indoor space (air conditioning) to an external vertical dimension (outdoor heat rejection units). This spatial reconfiguration allows heat to be rejected to the external environment without consuming indoor air conditioning capacity, thereby reducing energy costs.
3Temperature
If data centers are located in cool climates or adjacent to bodies of water, then cooling efficiency is improved, but communication latency increases
Solution Approach 1:
The patent segments the cooling system into distributed modular units that can be placed in close proximity to each server rack. This segmentation eliminates the need to locate entire data centers in specific geographic regions, allowing data centers to be positioned near end users while maintaining efficient local cooling through the non-aqueous dielectric coolant system.
4Device complexity
If conventional cooling techniques are used for high-performance computing, then system simplicity is maintained, but cooling effectiveness deteriorates
Solution Approach 1:
The patent changes the thermal parameters of the cooling system by introducing non-aqueous dielectric coolants with optimized thermal conductivity and heat capacity for high-performance computing. This parameter change enables conventional cooling architectures to achieve effective cooling for high-power components without requiring fundamentally new system designs.
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 manages heat in high-performance computing environments, reducing costs and safety risks, while maintaining performance by efficiently transferring heat away from components and regulating temperature through a closed-loop coolant cycle.
Implementation Method 1
a condenser configured to receive the vaporized coolant, convert the vaporized coolant to liquid coolant
Implementation Method 2
a chamber having a heat conducting wall for thermal contact with the heat generating electronic component
Implementation Method 3
liquid coolant to a cooling device... The liquid coolant may be heated by the electronic component and may evaporate to form vaporized coolant
Data Source
AI summary
A system for cooling servers mounted in a rack, comprising: a door mounted to open and close; a condenser mounted on the door and having a condenser vapor inlet port, and pivoting with the opening and closing door; a rack vapor manifold mounted along a side of the rack, having rack vapor inlet ports for association with a plurality of slots, and arranged to receive coolant vaporized by electronic components, and including a plurality of rack vapor outlet ports; a vapor manifold mounted on the door having a plurality of door vapor inlet ports, and a door vapor outlet port connected to the condenser vapor inlet port; and a plurality of flexible tubes interconnecting the rack vapor outlet ports to the door vapor inlet ports along the hinged side, to maintain flow-connections between the rack vapor manifold and the door vapor manifold while the door opens and closes.