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

VSEngineering 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

Engineering Contradiction:
Improveenergy efficiencyVSAvoidoperational cost
Core Design Contradiction:
Loss of energyVSUse of energy by moving object

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

Inventive Principle:
Principle #1Segmentation

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

Inventive Principle:
Principle #16Partial or excessive action

2Reliability

If high-quality filters are used for all filtration, then air quality is maintained, but filter replacement costs increase and system lifespan decreases

Engineering Contradiction:
Improveair qualityVSAvoidfilter lifespan
Core Design Contradiction:
ReliabilityVSDuration of action of stationary object

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

Inventive Principle:
Principle #1Segmentation

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

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

3Ease of operation

If evaporative cooling system is implemented externally, then air quality control is improved and operational costs decrease, but system complexity increases

Engineering Contradiction:
Improveoperational costVSAvoidsystem complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

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

Inventive Principle:
Principle #6Universality (Multi-functionality)

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.

Methodology Applied
Scientific EffectEvaporative cooling: Evaporative Cooler

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.

Methodology Applied
Scientific EffectGas mixing:

Data Source

PatentUS10299408B1Cooling system for a building
Publication Date: 2019.05.21 AMAZON TECH INC
  • US10299408B1 patent drawing
  • US10299408B1 patent drawing
  • US10299408B1 patent drawing

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.