Cold Row Encapsulation With Mixing Chamber for Server Rack Cooling
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Solution Overview
Problem
Data centers face significant energy consumption and inefficiencies in cooling systems due to high power usage by servers and HVAC systems, leading to increased costs and reduced reliability from heat buildup, especially in densely populated server racks.
Innovation Solution
The implementation of a cold row encapsulation structure with integrated cooling modules that utilize water-based cooling coils to cool hot air without the need for raised floors or underfloor plenums, allowing for efficient air circulation and reduced energy consumption by leveraging gravity and pressure differences within the encapsulation structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If traditional HVAC systems are used to cool data centers, then cooling coverage is provided, but energy consumption increases significantly (25-40% of total power usage)
Solution Approach 1:
The invention segments the data center cooling system into individual rack-level encapsulation units. Each server rack is enclosed in an insulated cabinet with dedicated cooling components, allowing independent temperature control for each rack rather than cooling the entire data center space uniformly. This segmentation reduces the overall HVAC load and energy consumption while maintaining reliable cooling for each server rack.
Solution Approach 2:
The invention applies local quality by providing customized insulation and cooling capacity to each server rack based on its specific heat load requirements. Different racks can have different insulation levels and cooling capacities matched to their actual server configurations, rather than applying a uniform cooling solution across the entire data center. This optimizes energy efficiency while ensuring each rack receives adequate cooling.
2Productivity
If server racks are densely populated to increase computing capacity, then productivity increases, but heat concentration increases leading to cooling inefficiency
Solution Approach 1:
By enclosing each server rack in an insulated encapsulation unit, the invention contains heat within individual racks rather than allowing heat to spread throughout the data center. This segmentation enables dense server packing within each rack while maintaining effective temperature control through dedicated cooling systems for each enclosed unit, preventing heat accumulation that would occur in densely populated open racks.
Solution Approach 2:
The invention changes the thermal parameters of the server rack environment by adding insulation layers and controlled cooling systems. This allows the internal temperature of each rack to be maintained at optimal levels even when servers are densely packed, effectively decoupling the relationship between server density and heat concentration.
3Ease of operation
If raised floor designs with underfloor air distribution are used, then cold air distribution is achieved, but system complexity and construction cost increase
Solution Approach 1:
The invention extracts the cold air distribution function from the raised floor system and integrates it directly into the server rack encapsulation units. Each enclosed rack has its own air intake, cooling, and circulation system, eliminating the need for complex underfloor air distribution infrastructure while maintaining effective cold air delivery to servers.
Solution Approach 2:
The invention merges multiple functions (structural support, insulation, cold air distribution, and cooling) into the server rack encapsulation unit itself. This integration eliminates the need for separate raised floor systems and underfloor air distribution networks, reducing overall system complexity while achieving the same cooling objectives.
4Reliability
If CRAC units are installed at corners to cool hot air, then cooling coverage is provided, but air flow efficiency decreases due to distance from server racks
Solution Approach 1:
The invention segments the cooling function from centralized CRAC units positioned at corners and distributes it to individual server racks. Each rack enclosure contains its own cooling components positioned immediately adjacent to the servers, eliminating the inefficiency of long air flow paths from corner-mounted units while ensuring comprehensive cooling coverage for all servers.
Solution Approach 2:
The rack enclosure itself acts as an intermediary that directly couples the cooling system to the heat source (servers). Instead of relying on room air circulation from distant CRAC units, the cooling system is positioned within inches of the servers through the enclosed rack structure, dramatically improving air flow efficiency and reducing energy 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
This solution enhances cooling efficiency, reduces energy consumption, and minimizes air leakage, thereby lowering operational costs and improving the reliability of data center equipment by effectively managing airflow and heat exchange within the data center.
Implementation Method 1
cooling modules that utilize water-based cooling coils to cool hot air
Implementation Method 2
leveraging gravity and pressure differences within the encapsulation structure
Implementation Method 3
leveraging gravity and pressure differences within the encapsulation structure
Data Source
AI summary
An apparatus includes an enclosure defining an interior space and at least one server-rack port configured to engage one or more of racks such that one or more servers installed in each rack are contiguous to the interior space. The enclosure is inside of a room and includes at least one stability control unit at the bottom of the enclosure. Each server includes a fan that draws air from the interior space into the server and expels the air outside of the enclosure into the room. The apparatus also includes a mixing chamber that is contiguous to the enclosure. The mixing chamber includes a first set of one or more dampers that are contiguous to natural air outside of the room and a second set of one or more dampers that are contiguous with air in the room.