Venturi Dehumidification Cooling for Data Center Heat Removal
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Solution Overview
Problem
Data centers face inefficiencies in waste heat removal due to non-uniform heat generation across racking systems and varying outside air quality, which challenges the effectiveness of uniform cooling methods, leading to potential overheating and malfunction of electronic components.
Innovation Solution
A cooling system that includes a duct with a venturi section to convert water vapor into water droplets, a desiccant wheel for dehumidification, and an evaporative cooling system, along with air flow control devices to manage airflow and optimize cooling based on environmental conditions, allowing for efficient heat removal from electronic components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If uniform heat removal methods are applied to non-uniform waste heat generation sources, then system simplicity is maintained, but cooling effectiveness deteriorates leading to potential overheating
Solution Approach 1:
The cooling system is divided into multiple independent cooling zones, each equipped with its own airflow control mechanisms. This segmentation allows each zone to be optimized for its specific heat generation characteristics, ensuring effective cooling without requiring complete system redesign.
Solution Approach 2:
The system incorporates dynamically adjustable airflow control devices that can modify cooling parameters in real-time based on actual heat generation patterns. This dynamic adjustment capability enables the system to adapt to non-uniform heat distribution without increasing structural complexity.
2Reliability
If mechanical cooling system is sized for hot, humid weather, then cooling effectiveness during peak heat is improved, but energy consumption increases significantly during cooler periods
Solution Approach 1:
The cooling system employs dynamically controllable components including variable speed fans and adjustable airflow dampers that can modulate cooling output to match actual thermal loads. This dynamic operation allows the system to maintain adequate cooling during hot weather while reducing energy consumption during cooler periods.
Solution Approach 2:
The system changes operational parameters such as airflow rate, fan speed, and cooling medium flow based on environmental conditions and actual heat generation. This parameter adjustment enables the system to operate efficiently across varying weather conditions without requiring oversized infrastructure.
3Use of energy by moving object
If outside air is used as cooling source, then energy efficiency is improved during favorable conditions, but system reliability deteriorates when outside air quality varies
Solution Approach 1:
The system introduces intermediate control elements such as airflow mixers and conditionally operable cooling stages that mediate between outside air cooling and alternative cooling methods. This intermediary approach allows the system to leverage efficient outside air cooling when conditions are favorable while smoothly transitioning to other cooling modes when outside air quality deteriorates.
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 removes heat from electronic components by utilizing a two-phase mixture of air and water droplets, dehumidification, and controlled airflow, enhancing cooling efficiency and reducing energy consumption by adapting to varying environmental conditions.
Implementation Method 1
The duct includes a venturi section. The air moving devices move air through the venturi section of the duct such that at least a portion of water in the air is converted from water vapor to water droplets
Implementation Method 2
a desiccant wheel for dehumidification
Implementation Method 3
an evaporative cooling system, along with air flow control devices to manage airflow and optimize cooling based on environmental conditions
Data Source
AI summary
A system for cooling heat producing components in a building includes a duct coupled to a room of the building and one or more air moving devices. The duct includes a constricted section. The air moving devices move air through the constricted section of the duct such that water in the air is converted from water vapor to water droplets. The water droplets are carried downstream from the constricted section in a two-phase mixture comprising air and water.