Indirect Air Cooling Layout for Lower-Power Data Center Heat Removal
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Solution Overview
Problem
Data centers face significant power consumption and heat management challenges due to increasing compute capabilities, leading to inefficient HVAC systems that account for a substantial portion of energy usage and can impact equipment performance and reliability.
Innovation Solution
A high-efficiency cooling system that combines direct and indirect heat transfer methods, utilizing a cooling section, media exchange section, and mixing section to efficiently cool return air and mix it with outside air, reducing power consumption and enabling a smaller footprint through modular configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional HVAC systems are used to cool data centers, then temperature control is achieved, but power consumption increases significantly (25-40% of total power usage)
Solution Approach 1:
The cooling system is divided into multiple independent cooling units, each serving specific server racks. This segmentation allows for localized cooling control, reducing the overall energy consumption compared to traditional centralized HVAC systems that cool the entire space uniformly.
Solution Approach 2:
The patent implements cooling units positioned directly at server racks, providing localized cooling where heat is generated. This local quality approach ensures efficient heat removal from high-density compute areas without wasting energy cooling low-heat areas, directly addressing the power consumption issue.
2Productivity
If servers are densely populated to increase compute capability, then compute efficiency improves, but heat load concentration increases adversely affecting equipment performance
Solution Approach 1:
The cooling units are positioned in direct thermal communication with densely populated server racks, providing localized cooling capacity matched to the local heat generation. This allows high-density computing configurations without compromising equipment performance due to excessive heat concentration.
Solution Approach 2:
The cooling units act as intermediary thermal management devices between the heat-generating servers and the surrounding environment. These units facilitate efficient heat transfer from concentrated server racks to the cooling medium, enabling high compute density while maintaining safe operating temperatures.
3Temperature
If cooling efficiency is improved through advanced HVAC systems, then temperature control enhances, but device complexity and footprint increase
Solution Approach 1:
The system uses multiple simple, modular cooling units distributed throughout the data center rather than one complex centralized HVAC system. Each unit is relatively simple in design, but collectively they provide superior cooling efficiency through localized thermal management.
Solution Approach 2:
The cooling units are positioned in three-dimensional space directly adjacent to or in thermal communication with server racks, utilizing vertical and horizontal spacing optimally. This spatial arrangement enables efficient cooling without requiring complex ductwork or large facility footprints.
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 achieves significant cost savings by reducing energy use and improving cooling efficiency, effectively managing heat loads in data centers and similar facilities while maintaining equipment performance and reliability.
Implementation Method 1
a first cooler (68) configured to receive return air (32) from the interior space (34) and cool the return air (32) using heat transfer with outside air (38)
Implementation Method 2
first media exchanger (50) positioned downstream from the first cooler (68) and configured to cool a fluid flowing through the first media exchanger (50) using heat transfer with outside air (38)
Data Source
AI summary
A cooling system (20) includes a media exchanger (50), a cooling section (22), and a cooling circuit (120) for circulating a cooling fluid (130) between the media exchanger (50) and the cooling section (22). The media exchanger (50) receives outside air (38) and the cooling section (22) receives return air (32) from and interior space (34). When the cooling fluid (130) circulates into the cooling section (22) via the cooling circuit (120), the temperature of the return air (32) is reduced through indirect heat transfer between the cooling fluid (130) and the return air (32) to produce conditioned air (84). The conditioned air (84) is provided as supply air (46) into the interior space (34). When the cooling fluid circulates into the media exchanger via the cooling circuit, the temperature of the cooling fluid is reduced through direct heat transfer between the cooling fluid and the outside air.