Ashrae announces new book to prevent contamination in Datacom ...

Relocate (Jul 7 2009) Construction , Power and Cooling

1. The growing use of outside air to keep a data center cool also requires special attention to the quality of that air. The introduction of outdoor air for data center cooling with an air economizer saves cooling energy but increases exposure of the electronic equipment to contamination, corrosion, and humidity excursions. Some of the problems that can result are short circuiting in the presence of ambient moisture (humidity). The electrical shorting occurs when ionic bridges are created by the dust particles accelerated by moisture from the environment. Data centers with airside economizers require real-time monitoring of the outdoor air. In the event of a sudden rise in the level of dust or gaseous contaminant in the outdoor air, the system should close off the external air source and revert back to a recirculation mode. (Read Full Article)

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