Hybrid Coolant Distribution Unit for Multi-Node Chassis Thermal Management
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Solution Overview
Problem
The increasing density and performance of heat-generating components in computer systems pose significant heat dissipation challenges, making traditional air cooling methods costly and inefficient, while water cooling solutions require substantial infrastructure investments.
Innovation Solution
A system comprising a chassis with node bays, a coolant distribution unit, and air movers, where coolant is circulated through internal heat exchangers in each node, and air movers are used to enhance heat transfer across an air-to-coolant heat exchanger, optimizing both air and coolant flow for efficient heat removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional air cooling methods are used, then the system structure is simple and infrastructure cost is low, but heat dissipation efficiency is insufficient and energy consumption is high
Solution Approach 1:
The system segments the cooling function by separating air cooling (for general environment) and water cooling (for specific hot spots), with each method handling different thermal loads. The coolant distribution unit distributes coolant to multiple heat-generating components independently, allowing targeted cooling where needed most.
Solution Approach 2:
The patent applies local quality by providing water cooling specifically to high-heat-generating components (processors, memory) while using air cooling for the overall chassis environment. The coolant is directed to components based on their specific thermal requirements, optimizing cooling efficiency for each location.
2Temperature
If water cooling systems are implemented, then heat dissipation efficiency improves and energy consumption decreases, but infrastructure investment and system complexity increase significantly
Solution Approach 1:
The patent merges air cooling and water cooling systems into a single integrated chassis cooling solution. The air cooling system cools the overall chassis environment while the water cooling system targets specific high-heat components, combining the advantages of both methods in one unified system.
Solution Approach 2:
The coolant distribution unit serves multiple functions: it distributes coolant to multiple heat-generating components simultaneously, collects heated coolant from all components, and interfaces with the air cooling system. This multi-functional design reduces the need for separate cooling systems for different components.
3Productivity
If the number of heat-generating components increases, then system performance improves, but heat dissipation challenges increase and cooling effectiveness decreases
Solution Approach 1:
The coolant distribution unit segments the cooling flow to multiple independent outlets, each serving specific heat-generating components. This allows the system to scale cooling capacity proportionally with the number of components, maintaining effective cooling even as component density increases.
Solution Approach 2:
The coolant acts as an intermediary medium that transfers heat from multiple heat-generating components to the air cooling system. The coolant absorbs heat from processors, memory, and other components, then transports this heat to the air-to-coolant heat exchanger where it is dissipated to the surrounding air.
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
This hybrid cooling system effectively manages heat dissipation in computer systems, reducing energy consumption and infrastructure costs by leveraging both air and coolant circulation to maintain high performance and low power consumption.
Implementation Method 1
an air-to-coolant heat exchanger in fluid communication between the inlet conduit and the outlet conduit
Implementation Method 2
one or more air movers are positioned for moving air through the air-to-coolant heat exchanger of the coolant distribution unit
Implementation Method 3
a pump for circulating a coolant from the inlet conduit through the air-to-coolant heat exchanger to the outlet conduit
Implementation Method 4
The plurality of nodes each have an internal heat exchanger, and each node is operatively received into one of the node bays with the internal heat exchanger in fluid communication with one of the coolant supply outlets and one of the coolant return inlets
Data Source
AI summary
A system includes a chassis, a plurality of nodes, a coolant distribution unit (CDU), and one or more air movers. The chassis includes multiple node bays, a CDU bay, a coolant supply manifold with an inlet in the CDU bay and an outlet in each node bay, and a coolant return manifold an inlet in each node bay and an outlet in the CDU bay. Each node is received into a node bay with an internal heat exchanger connected between a coolant supply and return manifolds. The CDU is received in the CDU bay and includes an air-to-coolant heat exchanger in fluid communication between the supply and return manifolds, and a pump for circulating a coolant through a coolant loop. The one or more air movers force air across the air-to-coolant heat exchanger of the CDU.