Data Center Rack Cooling Loop With Fluid Loss Compensation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing liquid cooling systems for data center server racks are costly and prone to leaks, posing challenges in maintaining efficient cooling operations.
Innovation Solution
A rack assembly with an independent cooling loop and fluid compensation system, featuring a heat exchanger, liquid cooling blocks, and a flexible reservoir with an actuator to maintain cooling fluid levels, allowing for leak detection and compensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If liquid cooling blocks are implemented to cool heat-generating components, then cooling efficiency is improved, but system complexity and cost increase due to requiring external liquid distribution systems
Solution Approach 1:
The cooling system is segmented into self-contained rack-level units with independent cooling loops, rather than relying on a centralized data center liquid distribution system. Each rack assembly houses its own heat exchanger, cooling blocks, and fluid compensation system, making the cooling function modular and independent.
Solution Approach 2:
The liquid distribution system is extracted from the external data center infrastructure and integrated directly into the rack assembly. This eliminates the need for external piping and distribution networks by bringing the cooling functionality inside the rack itself.
2Temperature
If liquid cooling blocks are implemented, then cooling performance is improved, but reliability deteriorates due to potential leaks in the conduit network
Solution Approach 1:
The fluid compensation system includes a reservoir that stores additional cooling fluid beforehand. This reservoir acts as a cushion that compensates for fluid losses from leaks, maintaining system pressure and cooling performance until the leak can be addressed, thereby preventing complete system failure.
Solution Approach 2:
The system incorporates sensors that monitor cooling fluid levels and pressure in real-time. When fluid loss is detected, the feedback mechanism triggers the fluid compensation system to replenish fluid from the reservoir, and can alert operators to potential leak conditions before they become critical failures.
3Duration of action of stationary object
If continuous liquid supply from external systems is used, then cooling operation is maintained, but cost increases due to infrastructure requirements
Solution Approach 1:
The rack assembly performs self-service cooling by containing all necessary cooling components within the rack. The independent cooling loop with integrated heat exchanger, cooling blocks, and fluid compensation system allows the rack to maintain its own cooling operations without relying on external liquid distribution infrastructure, thereby reducing overall system cost.
4Loss of substance
If leaks occur in the cooling loop, then cooling fluid is lost, but detection and compensation capability is improved with the fluid compensation system
Solution Approach 1:
The fluid compensation system recovers cooling fluid from the reservoir and returns it to the cooling loop when leaks or fluid losses occur. This recovery mechanism maintains adequate fluid levels and system pressure, allowing continuous operation while minimizing the impact of fluid loss.
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 efficient cooling of electronic equipment by maintaining fluid levels within the cooling loop, reducing installation requirements, and facilitating leak detection and maintenance.
Implementation Method 1
the cooling loop being configured to transfer heat from the second internal fluid conduit to the first internal fluid conduit
Implementation Method 2
a cooling loop for circulating cooling fluid therein
Implementation Method 3
an actuator configured to force cooling fluid from the reservoir to the cooling loop to compensate for loss of cooling fluid in the cooling loop
Implementation Method 4
a heat exchanger connected to the rack frame, the heat exchanger defining a first internal fluid conduit
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A rack assembly for a data center includes: a rack frame configured to house electronic equipment including at least one heat-generating component; a heat exchanger defining a first internal fluid conduit; at least one liquid cooling block connected to the at least one heat-generating component, each of the at least one liquid cooling block defining a second internal fluid conduit, the second internal fluid conduit being in thermal connection with the first internal fluid conduit; a cooling loop comprising the first and second internal fluid conduits, the cooling loop being configured to transfer heat from the second internal fluid conduit to the first internal fluid conduit; and a fluid compensation system comprising: a reservoir fluidly connected to the cooling loop; and an actuator configured to force cooling fluid from the reservoir to the cooling loop to compensate for loss of cooling fluid in the cooling loop.