Evaporative Pad Cooling Control for Water-Saving Datacenter Dry Coolers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional dry cooling techniques for datacenters face issues such as high water consumption, inconsistent cooling, temperature fluctuations, and the dispersion of pathogenic bacteria due to direct spray methods, along with the need for numerous sensors and electronic components.
Innovation Solution
A datacenter dry cooling system with an evaporative cooling arrangement that uses sensors to detect ambient temperature and humidity levels, controlling the application of evaporative cooling water through a closed loop system to optimize water usage and prevent leaks, reducing the number of sensors and electronic components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If direct spray evaporative techniques are used to precool ambient air, then cooling efficiency is improved, but water consumption increases significantly
Solution Approach 1:
The patent employs evaporative cooling pads made of porous materials that allow controlled water evaporation through their structure. The porous nature enables water to be distributed and evaporated efficiently, achieving effective precooling of ambient air while minimizing water consumption compared to direct spray methods.
Solution Approach 2:
The patent introduces evaporative cooling pads as an intermediary medium between the water supply and ambient air. Instead of directly spraying water onto air, the pads serve as a mediator that facilitates controlled evaporation, thereby achieving cooling efficiency while reducing water loss through uncontrolled spray dispersion.
2Temperature
If direct spray techniques are used to increase humidity and reduce temperature, then cooling effect is achieved, but pathogenic bacteria dispersion is promoted
Solution Approach 1:
The evaporative cooling pads act as an intermediary that eliminates direct water spray into the air, thereby preventing the dispersion of pathogenic bacteria. The pads contain and control water evaporation locally, achieving temperature reduction without creating aerosol clouds that could carry bacteria.
Solution Approach 2:
The patent converts the potential harm of water spray (bacterial dispersion) into a beneficial controlled evaporation process. By using porous pads, the system achieves the desired cooling effect while transforming the harmful spray mechanism into a safe, contained evaporation process that does not promote bacterial spread.
3Temperature
If evaporating pads receive large amounts of water, then cooling capacity is increased, but water leaks and inconsistent cooling occur
Solution Approach 1:
The patent implements a dynamic control system that adjusts water flow to the evaporative pads based on real-time environmental conditions (temperature, humidity, airflow). This dynamic adjustment ensures optimal water application rates, maintaining high cooling capacity while preventing water leaks and ensuring consistent cooling performance under varying operating conditions.
Solution Approach 2:
The system incorporates sensors that continuously monitor temperature, humidity, and airflow conditions, providing feedback to the water control mechanism. This feedback loop enables the system to automatically adjust water flow rates to match actual cooling demands, preventing both water waste and inconsistent cooling, thereby improving reliability.
4Measurement precision
If numerous sensors and electronic components are used to control water flow, then cooling control precision is improved, but device complexity increases
Solution Approach 1:
The patent employs a multi-functional controller that integrates temperature sensing, humidity sensing, airflow monitoring, and water flow control into a single device. This universal controller reduces the number of separate electronic components and sensors needed, thereby simplifying the overall system while maintaining precise control over the evaporative cooling process.
Solution Approach 2:
The system merges multiple control functions (temperature control, humidity control, water flow regulation) into a unified control mechanism. By combining these functions, the patent reduces device complexity and the number of separate components while preserving measurement precision and control accuracy through integrated sensing and actuation.
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 achieves efficient cooling with minimal water consumption and reduced energy use while preventing water leaks and bacterial dispersion, maintaining consistent temperature control.
Implementation Method 1
an evaporating pad, disposed at an input airflow side of the air-to-liquid heat exchanger panel, and configured to receive a controlled measured amount of cooling water that is to be evaporated while exposed to the forced ambient airflow in order to dissipate the thermal energy of the warmed liquid
Implementation Method 2
a cooling liquid closed loop arrangement configured to convey and circulate a cooling liquid throughout the heat-generating source, the cooling liquid adapted to absorb the thermal energy of the heat-generating source resulting in a warmed liquid
Implementation Method 3
an air-to-liquid heat exchanger panel adapted to receive the warmed liquid, via the cooling liquid closed loop arrangement, and exposed to the forced ambient airflow
Data Source
AI summary
A datacenter dry cooling system and method for cooling a heat-generating source are provided. The configuration includes an evaporating pad disposed on an air-to-liquid heat exchanger panel and an evaporating cooling water distribution arrangement for applying a controlled measured amount cooling water to the evaporating pad. The applied water serves is to be evaporated while the evaporating pad is exposed to ambient airflow to dissipate thermal energy of warmed liquid received from the heat-generating sources. The evaporating pad incorporates at least one of a temperature sensor or a humidity sensor for detecting outside temperature or humidity levels. A controller communicatively-coupled to the temperature or humidity sensor controls the volume flow of the cooling water based on the detected temperature or humidity levels.