Server Cabinet Coolant Pressure Control for Variable Server Loads
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing liquid cooling systems for servers in cabinets face inefficiencies when servers are removed for maintenance, leading to increased coolant flow rates and power consumption due to constant flow rate control, which results in overheating and impedance issues.
Innovation Solution
A coolant flow rate control method that adjusts the duty ratio of the fluid driver based on pressure differences between server inlets and outlets, using a main controller to maintain a predetermined pressure difference, and optionally adjusts proportional valves to optimize coolant flow according to server load and temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the fluid driver drives the coolant at a constant flow rate, then the cooling performance is maintained, but the power consumption increases when the number of servers decreases
Solution Approach 1:
The patent applies dynamics by transitioning from constant flow rate control to dynamic flow rate control. The fluid driver adjusts the coolant flow rate based on the actual number of servers in the cabinet, making the system adaptive rather than static. This resolves the contradiction by allowing the system to maintain adequate cooling while reducing flow rate (and power consumption) when fewer servers are present.
Solution Approach 2:
The patent changes the flow rate parameter dynamically based on server count. Instead of maintaining a fixed flow rate, the system modifies the flow rate parameter according to the actual cooling demand, which directly addresses the power consumption issue while preserving necessary cooling performance.
2Device complexity
If the coolant flow rate increases when servers are removed, then the flow rate control is simple, but the impedance increases and cooling efficiency decreases
Solution Approach 1:
The patent implements feedback control by monitoring the actual number of servers and using this information to adjust the coolant flow rate. The controller receives feedback about server presence and modifies the flow rate accordingly, preventing impedance issues and maintaining cooling efficiency without requiring complex manual intervention.
Solution Approach 2:
The system performs self-service by automatically adjusting the coolant flow rate based on the actual server configuration. The controller autonomously determines the appropriate flow rate without requiring external intervention, thereby maintaining cooling efficiency while adapting to changes in server count.
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
Reduces power consumption and maintains optimal cooling by dynamically adjusting coolant flow rates to match server needs, thereby saving energy and preventing overheating.
Implementation Method 1
The fluid driver can drive a coolant to pass through the servers and carry away heat generated by heat sources
Implementation Method 2
a coolant to pass through the servers and carry away heat generated by heat sources
Data Source
AI summary
A coolant flow rate control method, configured to be applied to a plurality of servers and a fluid driver in fluid communication with the plurality of servers. The coolant flow rate control method includes setting a predetermined pressure difference between inlets and outlets of the plurality of servers based on power data of the plurality of servers and adjusting a duty ratio of the fluid driver for maintaining an actual pressure difference between the inlets and the outlets of the plurality of servers to match the predetermined pressure difference.