ASHRAE 90.4 Update

In most jurisdictions ASHRAE 90.1 is used as the building energy standard to be followed as part of their building codes.  Data centers were often exempt from 90.1 until 2010 when they were specifically noted to be included.  There was push back, as some provisions of 90.1 were deemed too prescriptive, so in 2012 there…

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Energy Codes & Standards

In the United States there are two main documents that pertain to energy.  The main one is the model code International Energy Conservation Code (IECC), developed by the International Code Council.  47 states have adopted it, as well as the District of Columbia, Puerto Rico, and the U.S. Virgin Islands.  The other is Standard 90.1,…

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Liquid Cooling Definitions

The majority of the industry understands that liquids are used in some or most of the cooling process for most data centers.  However there has been some misunderstandings about what is actually liquid cooled.  ASHRAE (the American Society of Heating, Refrigeration and Air-conditioning Engineers) released the second edition of Liquid Cooling Guidelines for Datacom Equipment…

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Ice Storage Systems?

The ASHRAE technical committee Datacom book series makes mention of ice storage for consideration.  While ice storage is useful if you have the up-and-downs that a normal office building has, it has much less application for a data center where load runs much more evenly throughout 24 hours.  The amount of ice stored would amount…

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ASHRAE 2012 Winter Meeting Notes

I thought I’d provide a few highlights from what I learned and heard at the ASHRAE 2012 Winter meeting in Chicago. ASHRAE has gone through some rebranding, including a new logo & tagline: Shaping Tomorrow’s Built Environment Today. Of data center interest: Technical Committee 9.9 (http://tc99.ashraetcs.org/) had two meetings at the conference; for more information it…

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