Server Rack Cooling System with Upstream Evaporator
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Solution Overview
Problem
Current cooling systems for server racks lack a compact and effective solution to decrease the airflow inlet temperature, which is crucial for improving cooling performance as servers require increasing power and generate more heat.
Innovation Solution
A cooling system comprising a cooling module, evaporators, and condensers configured to condition coolant, with evaporators positioned upstream to cool incoming airflow and condensers positioned downstream to cool the coolant, along with fans to manage airflow, and adjustable mounts for vertical positioning to align with servers, optimizing cooling based on server arrangement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling system is designed to decrease airflow inlet temperature at the server rack, then cooling performance increases, but system complexity and space requirements increase
Solution Approach 1:
The evaporator is integrated within the server rack structure, nesting the cooling component inside the existing rack framework. This eliminates the need for external cooling equipment and reduces overall system complexity while achieving the goal of decreasing airflow inlet temperature.
Solution Approach 2:
The cooling system is designed to serve multiple functions: the evaporator provides cooling to the airflow, the condenser handles heat rejection, and the integrated fan system manages air circulation. This multi-functionality reduces the need for separate dedicated components, thereby reducing system complexity.
2Temperature
If evaporators and condensers are integrated within the server rack, then cooling effectiveness improves, but available space within the rack decreases
Solution Approach 1:
The cooling components are arranged vertically along the airflow path within the rack, utilizing the vertical dimension rather than occupying horizontal space. This dimensional arrangement allows effective cooling integration while preserving horizontal rack space for server equipment.
Solution Approach 2:
The cooling system is segmented into distinct functional modules (evaporator section, condenser section, fan system) that can be independently positioned and sized. This segmentation allows for optimized space utilization within the rack while maintaining cooling effectiveness.
3Temperature
If fans are added to manage airflow through the evaporator and condenser, then cooling performance increases, but energy consumption increases
Solution Approach 1:
The system uses the server rack's existing fan infrastructure to drive airflow through the evaporator and condenser, rather than adding dedicated fans for the cooling system. This self-service approach leverages available resources, reducing additional energy consumption while maintaining cooling performance.
Solution Approach 2:
The cooling system's airflow requirements are merged with the server rack's existing air circulation needs. A single fan system serves both the servers and the cooling components, eliminating redundant fan operations and reducing total energy consumption.
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 reduces airflow inlet temperature, enhancing cooling performance and improving server operation by maximizing the cooling effect of internal airflow within the server rack.
Implementation Method 1
The at least one evaporator is configured to couple to an upstream side of the server rack, relative to airflow through the server rack, and cool the airflow flowing into the server rack with the coolant
Implementation Method 2
The at least one condenser is configured to couple to a downstream side of the server rack, relative to the airflow through the server rack, and cool the coolant after the coolant passes through the at least one evaporator
Data Source
AI summary
A cooling system is disclosed for a server rack holding one or more servers. The cooling system includes a cooling module configured to condition coolant to provide cooling within the server rack. The cooling system further includes at least one evaporator configured to couple to an upstream side of the server rack, relative to airflow through the server rack, and cool the airflow flowing into the server rack with the coolant. The cooling system further includes at least one condenser configured to couple to a downstream side of the server rack, relative to the airflow through the server rack, and cool the coolant after the coolant passes through the at least one evaporator.