Sidecar Liquid Cooling With Sensor-Based Flow Control
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Solution Overview
Problem
Existing cooling systems for data centers face challenges in efficiently managing fluid flow and temperature control in liquid cooling systems, leading to potential equipment degradation and performance issues.
Innovation Solution
A liquid cooling system with a controller that regulates fluid flow and temperature through a heat exchanger using sensors and flow control assemblies, including pumps and fans, to maintain optimal operating conditions and address failure conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If liquid cooling systems are used to cool electrical equipment in data centers, then cooling effectiveness is improved, but system complexity increases due to piping, manifolds, and fluid flow management requirements
Solution Approach 1:
A controller acts as an intermediary between temperature sensors and pump/flow control assemblies, centralizing the complexity of fluid flow management and simplifying system operation. The controller receives temperature data and automatically adjusts pump speeds and flow rates to maintain optimal cooling without requiring manual intervention or complex distributed control logic across multiple components.
2Measurement precision
If flow control assemblies and sensors are added to regulate fluid flow and temperature, then temperature control precision is improved, but device complexity increases
Solution Approach 1:
Temperature sensors continuously monitor coolant temperature and provide feedback to the controller, which automatically adjusts pump flow rates and heat exchanger operations to maintain precise temperature control. This closed-loop feedback system eliminates the need for complex manual control mechanisms while achieving high temperature regulation precision through automated sensor-actuator coordination.
3Reliability
If multiple flow control assemblies are used to control both first fluid and second fluid flow, then cooling system reliability is improved, but ease of operation deteriorates due to increased control complexity
Solution Approach 1:
The controller serves multiple functions simultaneously: it monitors temperature from sensors, calculates optimal flow rates based on thermal demands, controls pump speeds for the first fluid, and regulates heat exchanger operation for the second fluid. This multi-functional controller consolidates what would otherwise require multiple separate control devices, maintaining reliability through comprehensive control while improving ease of operation through centralized automated management.
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 controls fluid flow and temperature, enhancing the efficiency and reliability of cooling processes, thereby protecting electrical equipment and maintaining performance.
Implementation Method 1
the heat exchanger transferring heat from a first fluid to a second fluid, the first fluid cooling electrical equipment within a data center
Implementation Method 2
a first pump... send the first pump speed signal to the first flow control assembly
Implementation Method 3
a second pump speed signal to control a speed of a second fan... send the second fan speed signal to the second flow control assembly
Data Source
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AI summary
A liquid cooling system has an enclosure (201) and a heat exchanger (102, 202) positioned in the enclosure. The heat exchanger transfers heat from a first fluid to a second fluid. The first fluid cools electrical equipment within a data center. The system includes a first flow control assembly to control flow of the first fluid and a second flow control assembly to control flow of the second fluid through the heat exchanger. A first temperature sensor and a first flow sensor are positioned within the enclosure. A controller receives measurements from the sensors. The controller determines a first signal based on a flow rate measurement and a target flow rate and sends the first signal to the first flow control assembly. The controller determines a second signal based on the temperature measurement and a target temperature and sends the second signal to the second flow control assembly.