Cooling Distribution Unit With Multi-Temperature Rack Cooling
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Solution Overview
Problem
Existing cooling systems for data centers face challenges in efficiently managing heat removal from rack-powered equipment, particularly in varying climate conditions and infrastructure limitations.
Innovation Solution
The implementation of a cooling distribution unit (CDU) that integrates a complete refrigeration circuit, allowing for different set points within the data center and operating modes such as economization, hybrid, and mechanical, to optimize cooling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single temperature cooling system is used, then the system structure is simple, but it cannot meet the different cooling requirements of various equipment in the data center
Solution Approach 1:
The cooling system is divided into multiple independent temperature zones with separate control circuits. Each zone can be adjusted to different temperature set points to match the specific cooling requirements of different equipment racks, while sharing common cooling components like chillers and heat exchangers.
Solution Approach 2:
The cooling distribution unit is designed to provide multiple temperature outputs from a single system, enabling it to serve different equipment types (IT equipment, networking equipment, storage systems) with varying thermal requirements. The system maintains universal applicability across diverse data center configurations.
2Loss of energy
If traditional cooling systems are used, then the system structure is simple, but energy consumption is high and cooling efficiency is low
Solution Approach 1:
The system incorporates variable speed pumps and adjustable flow control valves that dynamically adapt cooling fluid flow rates to actual thermal loads. This dynamic adjustment optimizes energy consumption by matching cooling capacity to real-time equipment heat generation rather than operating at fixed high levels.
Solution Approach 2:
Temperature sensors and control systems continuously monitor equipment temperatures and cooling fluid parameters, providing feedback to adjust chiller operation, pump speeds, and valve positions. This closed-loop control ensures optimal energy efficiency while maintaining required temperature set points.
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 solution enables efficient heat removal and distribution across different temperature levels, enhances cooling system flexibility, and reduces energy consumption by leveraging external economizers and hybrid operation modes.
Implementation Method 1
a refrigeration unit configured to be coupled to a dry cooling unit, the refrigeration unit being configured to receive a first cooling fluid in relatively cool condition from the dry cooling unit and to output the first cooling fluid in relatively warm condition to the dry cooling unit
Implementation Method 2
a heat exchanger disposed within the data center and in fluid communication with the evaporator of the refrigeration unit
Implementation Method 3
a dry cooling unit configured to deliver a second cooling fluid in a relatively cool condition to the cooling distribution unit
Data Source
Figure 1
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Figure 4
AI summary
A cooling distribution unit includes a refrigeration unit configured to be coupled to a dry cooling unit. The refrigeration unit is configured to receive a first cooling fluid in relatively cool condition from the dry cooling unit and to output the first cooling fluid in relatively warm condition to the dry cooling unit for cooling. The cooling distribution unit further includes a first control valve coupled to the refrigeration unit. The first control valve is configured to output a first portion of a second cooling fluid at a first temperature. The cooling distribution unit further includes a second control valve coupled to the refrigeration unit. The second control valve is configured to output a second portion of the second cooling fluid at a second temperature.