Data Center Cooling Using Warm-Water Evaporative Heat Exchange
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Solution Overview
Problem
Data centers face significant challenges in efficiently managing heat generated by electronic equipment, leading to high electrical power consumption and costs, as traditional cooling methods rely heavily on energy-intensive chillers and water usage, which strain both the electrical grid and water resources.
Innovation Solution
The implementation of a system that utilizes elevated air and water temperatures to facilitate cooling through evaporative cooling, air-to-water heat exchangers, and on-site water treatment, reducing the need for chillers and municipal water sources, and incorporating modular, scalable designs for efficient water management and cooling tower operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional cooling methods using chillers and condensers are employed, then cooling performance is maintained, but electrical power consumption increases significantly
Solution Approach 1:
The system changes the operating temperature parameters of the cooling system, allowing water to be cooled to higher temperatures (e.g., 80-95°F) rather than traditional lower temperatures, thereby enabling the use of cooling towers instead of energy-intensive chillers while maintaining adequate cooling performance for electronic equipment
Solution Approach 2:
The invention replaces the mechanical chiller system with a cooling tower system that uses evaporative cooling, substituting a high-energy-consumption mechanical refrigeration system with a passive evaporative cooling system that requires minimal electrical power
2Use of energy by moving object
If cooling towers are used for evaporative cooling, then energy consumption is reduced, but water usage increases
Solution Approach 1:
The system recycles and reuses cooling water through a closed-loop system with heat exchangers, capturing and reutilizing thermal energy from exhaust air and process water to pre-cool incoming water, thereby reducing the amount of water that needs to be evaporated and discarded
Solution Approach 2:
The invention merges multiple cooling functions into a single integrated system where cooling towers, heat exchangers, and water recycling systems work together, allowing the system to simultaneously cool process water and pre-cool tower water, thereby reducing overall water consumption
3Productivity
If high temperature rises are created across heat-generating components, then cooling efficiency improves, but microprocessor errors and failures increase
Solution Approach 1:
The system applies different temperature strategies to different locations and components - using higher temperature rises (36°F or 20°C) for general cooling efficiency in non-critical areas, while maintaining lower temperature rises for critical microprocessor components to ensure their reliability and prevent errors
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 approach decreases energy consumption, lowers operational costs, reduces water usage and sewage load, allows for modular expansion, and enables data center construction in remote areas with limited electrical access, while maintaining efficient cooling performance.
Implementation Method 1
Water in a cooling tower is allowed to cool through evaporative cooling
Implementation Method 2
Water is flowed from the water storage tank to an air-to-water heat exchanger. The water flowing through the air-to-water heat exchanger cools air surrounding the heat exchanger that has been heated by a group of electronic devices
Data Source
AI summary
Cooling systems for providing cooled air to electronic devices are described. The systems can include large storage tanks or waste treatment systems to improve the efficiency of the plant and reduce impact on the environment.