Power Distribution Center Cooling With Dedicated Exhaust Ducts
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Solution Overview
Problem
Conventional power distribution centers (PDCs) in data centers face high energy usage and installation costs due to mechanical refrigeration for cooling, and there is inefficient mixing of supply and exhaust air, requiring excessive air volume to maintain equipment temperature.
Innovation Solution
A cooling system for PDCs that utilizes external cooling air intake and exhaust air ducts to transfer thermal energy outside, incorporating passive and active cooling techniques, including evaporative and mechanical cooling, with discrete cooling systems for critical equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If mechanical refrigeration is used for cooling in power distribution centers, then equipment temperature control is achieved, but energy usage and installation costs increase
Solution Approach 1:
The cooling system is segmented into discrete cooling zones for different equipment types (UPS modules and battery racks), allowing each component to be cooled independently through dedicated air ducts rather than using a single centralized mechanical refrigeration system, thereby reducing overall energy consumption
Solution Approach 2:
The system uses the equipment's own heat generation to drive natural convection currents that circulate cooling air through the facility, eliminating the need for energy-intensive mechanical refrigeration while maintaining effective temperature control
2Temperature
If mechanical refrigeration is used for cooling in power distribution centers, then equipment temperature control is achieved, but installation costs increase
Solution Approach 1:
The cooling system leverages natural physical phenomena (convection and radiation) rather than requiring complex mechanical refrigeration equipment, significantly reducing installation costs while maintaining effective temperature control for power distribution center equipment
Solution Approach 2:
The air ducts serve multiple functions: they provide structural support for mounting equipment, facilitate air circulation for cooling, and guide exhaust air to exterior openings, eliminating the need for separate mechanical refrigeration infrastructure and reducing installation costs
3Temperature
If excessive air volume is used to maintain equipment temperature, then cooling effectiveness is improved, but energy consumption increases
Solution Approach 1:
The system provides localized cooling to specific equipment areas where heat generation occurs (above UPS modules and battery racks) rather than circulating large volumes of air throughout the entire facility, improving cooling effectiveness while reducing energy consumption
Solution Approach 2:
The system utilizes periodic natural convection cycles driven by temperature differentials to circulate air through the facility, replacing continuous energy-intensive mechanical air circulation with periodic natural airflow that maintains effective cooling with minimal energy input
4Device complexity
If supply and exhaust air are mixed, then air circulation is simplified, but cooling efficiency decreases due to hot and cold air mixing
Solution Approach 1:
The air circulation system is segmented into separate pathways for supply air (intake) and exhaust air (outtake), preventing mixing between hot and cold air streams while maintaining relatively simple ductwork that follows the natural flow paths of air through the facility
Solution Approach 2:
The system utilizes vertical air stratification and directional airflow patterns to separate hot and cold air in three-dimensional space, allowing efficient cooling without requiring complex mechanical separation systems, thus maintaining simplicity while improving cooling efficiency
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
Reduces energy consumption and installation costs while maintaining equipment within thermal limits, ensuring efficient cooling without mixing hot and cold air, and providing redundancy for critical cooling systems.
Implementation Method 1
The one or more UPS modules and the one or more battery racks are configured to transfer thermal energy to the cooling air during operation, thereby creating heated exhaust air
Implementation Method 2
incorporating passive and active cooling techniques, including evaporative and mechanical cooling
Data Source
AI summary
A power distribution center includes a housing comprising multiple walls and multiple openings, one or more UPS modules and battery racks, and at least one exhaust air duct disposed above the one or more UPS modules and battery racks. The at least one exhaust air duct has an outlet aligned with at least one first opening. The power distribution center is configured to receive cooling air from outside the power distribution center and convey the cooling air to the one or more UPS modules and battery racks. The one or more UPS modules and battery racks are configured to transfer thermal energy to the cooling air, thereby creating heated exhaust air. The at least one exhaust air duct is configured to receive and convey the heated exhaust air to the at least one first opening to expel the heated exhaust air to an exterior space.