Zoned Humidity Control for Data Center Condensation Prevention
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Solution Overview
Problem
Conventional humidity control systems in data centers face inefficiencies and condensation issues due to reliance on relative humidity measurements at AC unit returns, leading to energy wastage and uneven moisture distribution.
Innovation Solution
A system with humidity control apparatuses and sensors positioned remotely to detect and adjust moisture levels directly at electronic components, using a controller to optimize humidity levels and energy efficiency by integrating with AC units to prevent cross-purposes operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If humidity control is based only on relative humidity detected at the returns of AC units, then the AC units can maintain relative humidity levels within a desired range, but certain areas may receive overly cool air leading to condensation and the AC units operate in energy inefficient manners
Solution Approach 1:
The patent divides the data center into multiple zones with separate humidity control apparatuses and sensors for each zone. This segmentation allows independent monitoring and control of humidity levels in different areas, preventing the energy waste that occurs when a single AC unit serves multiple zones with different humidity requirements. Each zone's humidity is controlled based on local sensor data rather than centralized return air measurements.
Solution Approach 2:
The patent implements local humidity control by positioning humidity control apparatuses and sensors at specific locations within zones. This ensures that each area receives appropriate humidity management tailored to its specific conditions, preventing condensation in cooler areas while avoiding excessive humidification in warmer areas, thereby improving overall energy efficiency.
2Reliability
If one AC unit humidifies while another AC unit dehumidifies in supplying cool airflow to the same areas, then the AC units can attempt to maintain humidity levels, but this results in energy inefficient operations
Solution Approach 1:
The patent merges the humidity control functions into a coordinated system where multiple AC units operate under unified control based on zone-specific sensor data. This coordination prevents the contradictory situation where one unit humidifies while another dehumidifies the same area, as all units respond to the same local humidity measurements and work together to achieve the desired humidity levels efficiently.
Solution Approach 2:
The patent implements feedback control by using humidity sensors positioned within zones to continuously monitor local humidity levels and adjust the operation of humidity control apparatuses accordingly. This feedback mechanism ensures that AC units operate based on actual zone conditions rather than returning to centralized measurements, preventing energy-wasting contradictory operations and maintaining reliable humidity control.
3Ease of operation
If humidity sensors are positioned at the returns of AC units, then the system can detect relative humidity, but the measurements do not accurately reflect the moisture content at the electronic components
Solution Approach 1:
The patent changes the spatial dimension of sensor placement from centralized return air locations to distributed positions within individual zones near electronic components. This dimensional shift in sensor positioning allows direct measurement of the microenvironment where condensation risks exist, providing accurate local humidity data that reflects actual conditions at the electronic components rather than averaged return air conditions.
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 ensures reliable environmental conditions for electronic components and reduces energy consumption by optimizing humidity control and preventing wasteful operations between AC units.
Implementation Method 1
a first humidity control apparatus (130a) of the plurality of humidity control apparatuses (130a-130n) varies a moisture content in a first airflow (126a) supplied to the first zone (132a)
Implementation Method 2
a second humidity control apparatus (130b) of the plurality of humidity control apparatuses (130a-130n) removes moisture from a second airflow (126b) supplied to a second zone (132b)
Implementation Method 3
a plurality of sensors (140a-140n) for detecting the moisture content in an airflow in a plurality of locations of the substantially enclosed structure (100)
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
A system for controlling moisture content in ambient airflow in a substantially enclosed structure having components. The system includes at least one humidity control apparatus and a plurality of sensors for detecting moisture content in airflow in a plurality of locations of the substantially enclosed structure. The plurality of sensors are located remotely from the at least one humidity control apparatus and are situated in relatively close proximity to the components that the at least one humidity control apparatus is configured to affect. The system also includes a controller configured to receive moisture content levels detected by one or more of the plurality of sensors and to control the at least one humidity control apparatus based upon the detected moisture content levels to vary the moisture content in the ambient airflow around the plurality of locations.