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Algae Growth Clean Out Contaminant for Warm Water Cooled Data Centers

IP.com Disclosure Number: IPCOM000238592D
Publication Date: 2014-Sep-04
Document File: 2 page(s) / 66K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method to use reversed water circulation in the server as a means of cleaning the algae from a warm water-cooled system and ensuring water-cooling properties. A valve system designed into the cooling system enables the water flow reversal at the rack level.

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Algae Growth Clean Out Contaminant for Warm Water Cooled Data Centers

Historically, water-cooled systems used cold water at temperatures of 4°Celcius (C) to cool computer room equipment. However, that dynamic has changed in the high- performance computing sector. Currently, customer sites are using warm water cooling where the temperature of the water to cool the servers is 20°C. This presents unique challenges. One of the challenges is that algae grow inside the cooling tubing causing obstruction of the water flow.

The algae grow in the direction of the water flow; therefore, simply accelerating the flow rate may not dislodge the algae from the inside of the cooling walls. (Figure 1)

Figure 1: Algae growth in warm water cooled systems

The novel solution is to use reversed water circulation in the server as a means of cleaning the algae, without the use of chemicals, from a warm water-cooled system. This method avoids obstruction of the water cooling properties.

The water flow in the cooling units can be reversed in two ways. One way is to measure the exit pressure from the cooling system section. If the exit pressure is too low, then the coolant can be reversed to clean out the obstructions. The other way is to periodically reverse the coolant flow to clean off the growing algae before it has a chance to impede the coolant flow. Thus, the method to reverse the coolant flow in a closed warm water cooling system to clean out the algae uses either scheduled peri...