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Smart Monitoring and Maintenance of Closed Water Cooling Loops

IP.com Disclosure Number: IPCOM000240394D
Publication Date: 2015-Jan-28
Document File: 3 page(s) / 80K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method to monitor and maintain the concentration of a corrosion inhibitor in a water cooling loop.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 65% of the total text.

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Smart Monitoring and Maintenance of Closed Water Cooling Loops

High-end servers and rack mounted systems are often water cooled. In order to prevent corrosion of the cooling hardware, a corrosion inhibitor (e.g., tolyltriazole (TTA) or benzotriazole (BTA)
or its sodium salt) is typically added at a predetermined concentration to the circulating water. However, various components in the cooling loop (most notably the hose) can absorb the corrosion inhibitor resulting in an unacceptable drop in the corrosion inhibitor concentration over time. Copper corrosion can subsequently result in reliability failures in the cooling loop. To overcome this problem, water cooling systems are charged with an excessively high concentration of BTA which is not only expensive, but also poses a health hazard. Presently, there are no known solutions to overcome this problem.

    Old water re-use issue is another concern. If a system is to be retired or relocated, the cooling water must be drained. The customer must then dispose of that water as hazardous waste. Instead of disposing of the water, the customer may elect to use it to fill a new system. In this case, the corrosion inhibitor concentration may be inadequate (due to depletion in the previous system), and corrosion of the cooling loop may ensue. An in-line monitor is incorporated directly into the circulating cooling water and provides real-time BTA concentration. If the BTA concentration falls below a critical level, the system...