External Evaporative Cooling System for Datacenter Air Management
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Solution Overview
Problem
Datacenters face challenges in maintaining optimal environmental conditions, such as temperature and humidity, to prevent equipment failure and reduce operational costs, as existing cooling systems are inefficient and costly.
Innovation Solution
The implementation of an evaporative cooling system located externally to the datacenter building, which adjusts air humidity and temperature levels by mixing with return air, combined with multiple filtering levels to reduce debris loading and filter replacement costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If traditional cooling systems are used in datacenters, then equipment cooling is achieved, but operational costs increase and energy efficiency decreases
Solution Approach 1:
The cooling system is segmented into multiple independent filter banks arranged in series, allowing each bank to handle a portion of the filtration load. This segmentation enables the system to maintain effective cooling with reduced energy consumption by distributing the workload across multiple smaller units rather than one large high-energy system
Solution Approach 2:
The system uses multiple filter banks that can operate partially or in combination depending on the cooling load requirements. When full cooling capacity is not needed, only certain filter banks are activated, reducing overall energy consumption while still maintaining adequate cooling performance
2Reliability
If high-quality filters are used for all filtration, then air quality is maintained, but filter replacement costs increase and system lifespan decreases
Solution Approach 1:
The filtration system is divided into multiple filter banks that can be operated independently. This allows the system to use different filter qualities in different banks - cheaper filters in some banks and higher-quality filters in others - while maintaining overall air quality standards through the combined filtration effect
Solution Approach 2:
The system incorporates cheaper filter options in certain filter banks that can be replaced more frequently, while using more expensive, longer-lasting filters in other banks. This strategy reduces overall filter replacement costs while maintaining reliable air quality through the cumulative filtration capability of multiple banks
3Ease of operation
If evaporative cooling system is implemented externally, then air quality control is improved and operational costs decrease, but system complexity increases
Solution Approach 1:
The externally located evaporative cooling system is designed to perform multiple functions: cooling incoming air, controlling humidity levels, and filtering particulates. By consolidating these functions into a single external unit, the system reduces operational complexity and costs while avoiding the need for separate internal systems for each function
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 solution effectively controls air quality characteristics, reduces the demand for fresh air, lowers operational costs, and extends the lifespan of higher-quality filters by using less expensive filters for initial filtration.
Implementation Method 1
The datacenter systems feature an evaporative cooling system located in a housing external to the datacenter building. The evaporative cooling system adjusts humidity and temperature levels of air conveyed into the building through the housing.
Implementation Method 2
This air can be mixed with return air or other air from within the building to further adjust relative humidity and temperature levels.
Data Source
AI summary
A datacenter or other building includes an intake housing for receiving air from outside of the building. The air is routed through an evaporative cooling system in the housing, resulting in humidified air. The humidified air is mixed with a suitable amount of return air from within the building so as to yield a supply of air having a target relative humidity.


